Brief CV  (for pdf version)

Nikhil Ranjan Das

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Professor                         Institute of Radio Physics and Electronics

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SPECIALIZATION

Semiconductor Nanostructures, Photonic Devices and Systems.

POSITIONS HELD/HOLDING

Professor, University of Calcutta (2008--)

Director, Centre for Research in Nanoscience and Nanotechnology (Nov. 2023 -       ; Aug. 2015 - Aug.2017)

HEAD of the Department, Radio Physics and Electronics (Dec. 2014 - Nov. 2016),

DEAN, Faculty of Engineering & Technology (Aug. 2013 - Aug. 2016),

Head (acting), University Science Instrumentation Centre (April 2014 --July 2022),

Director (Hon.), UGC Networking Resource Centre in Physical Sciences (Apr. 2013 --)

Convenor, Ph.D. Research Advisory Committee (RAC) in Radio Physics and Electronics (2017 --Mar. 2023)

RESEARCH INTERESTS

• • Modeling of Nanoelectronic and Nanophotonics Devices

  • Modeling and Design of Semiconductor Photonic Devices

  • Physical Properties of Semiconductor Nanostructures

  • Crosstalk in Optical Wavelength Division Multiplexing systems

EDUCATION

Ph. D. : (1989 – 1993)    Institute of Radio Physics and Electronics, University of Calcutta, India 

Thesis: On Certain Aspects of Restricted Motion of Carriers in Submicron Structures of Semiconductors.

M.Tech.: (1987 – 1988) Institute of Radio Physics and Electronics, University of Calcutta, India

First Class (Rank 2).

B. Tech.: (1983 – 1986) Institute of Radio Physics and Electronics, University of Calcutta, India 

First Class.

B. Sc. (Honours in Physics) University of Calcutta, Krishnath College, Berhampore,WB, India

Part II: (1981-1982) First Class.

Part I: (1979-1981) First Division. Principal Subjects: Physics(Hons.),Chemistry,Mathematics

EMPLOYMENT

Professor: (July ’08-Present)

Reader: (Apr.7,’04 – July’08)

Senior Lecturer : (Oct.’98 -Apr 6’04: On Leave,Sept.’99-July‘02) 

Lecturer : (Oct. ’94 - Sept.’98)

Institute of Radio Physics and Electronics, University of Calcutta, India 

Visiting Scientist:  (Aug. 17,’18-Sep.13,’18: 4-week)

Chair "Materials Science and Nanotechnology”, Technical Universität Dresden, GERMANY  (INSA-DFG Bilateral Exchange programme)

Visiting Professor: (Aug. 19,’10-Nov.13,’10)

IT Convergence Engg., Pohang Univ. of Science & Technology (POSTECH), SOUTH KOREA 

Visiting Professor: (Aug./Sept. ’08)

Electronic & Electrical Engineering, University of Sheffield, Sheffield, UK 

Visiting Professor: (April’05 - June’05)

Electrical and Computer Engineering, McMaster University, Hamilton, Ontario, Canada 

Research Associate (Post-Doctoral) : (Sept. ’01 - July’02)

Post-Doctoral Fellow: (Sept.’99 - Aug. ’01)

Electrical and Computer Engineering, McMaster University, Hamilton, Ontario, Canada

Senior Project Scholar: (Aug. ’93 - Sept.’94)

Project MHRD(GoI). Institute of Radio Physics and Electronics, University of Calcutta, India

Senior Research Fellow: (March ’89 - July’93)

UGC (CAS) fellowship: Institute of Radio Physics and Electronics, University of Calcutta, India

TEACHING EXPERIENCE

Professor: (July ’08-Present)

Reader: (Apr.7,’04 – July’08)

Senior Lecturer : (Oct.’98 -Apr 6’04: On Leave,Sept.’99-July‘02) 

Lecturer : (Oct. ’94 - Sept.’98

Institute of Radio Physics and Electronics, University of Calcutta, India

• • • • Theoretical and Practical courses on various topics to students (B.Tech../M.Tech.) of (i) Radio Physics and Electronics and (ii) Information Technology. Topics include High frequency Semiconductor Devices, Electronic Materials, Solid State Electronic Devices & Circuits, Optoelectronics, Computer Softwares & Hardwares, Control Theory and Process Control, Photonics Devices, Optical Storage Devices, Nanophotonics, etc.

      • B.Tech. and M.Tech. projects in various fields of Electronics and Optoelectronics.

Visiting Professor: (Aug. 19,’10-Nov.13,’10)

IT Convergence Engg., Pohang Univ. of Science & Technology (POSTECH), SOUTH KOREA 

Taught a Course on “Semiconductor Theory” to Graduate Students in the 2nd (Winter) Semester.

Teacher (Substitute): 2001

Electrical and Computer Engineering, McMaster University, Hamilton, Ontario, Canada

Delivered lectures to graduate students on Semiconductor Devices, conducted a graduate seminar.

Adjunct Professor: 2006 - 2013

Electronics and Communication Engg., Academy of Technology, West Bengal, India Students are taught and supervised for project work.

Visiting Lecturer: (1992 – 1994)

Depts. of Computer Engg., Material Science, etc., Jadavpur University, India

Subjects taught include Electric Circuit Theory, Networks and Transmission Lines, Analog and Digital Electronics, Electronic Material Science.

Visiting Teacher: (1990 – 1994)

Electronics Test and Development Centre, Govt. of West Bengal, India. Lectures in training courses of Computer Language for the graduates.

Visiting Lecturer: (1998, 1999)

Calcutta University Computer Centre (CUCC), University of Calcutta, India

Series of lectures on C-Language to B.Tech./M.Sc. students in training course on UNIX and C.

Resource Person: 1999

Academic Staff College, University of Calcutta, India

Lectures in a Refresher Course on Electronics to teachers of Colleges affiliated to the University.

RESEARCH EXPERIENCE

Post-doctoral Research (1994 - Present ) (Within India)

Institute of Radio Physics and Electronics, University of Calcutta, India

As Lecturer/ Senior Lecturer/ Reader/ Professor (Oct.’94-Present, study leave:Sep.'99-July '02)

Ph. D. Guidance / Work with Colleagues & Collaborator

Topics In Brief:

• • • • Performance Study of Quantum Well, Wire and Dot based Semiconductor Photonic Devices

      • Studying Crosstalk in Wavelength Division Multiplexed Receivers

      • Modeling & Design of Si-based Photonic Devices, SiGe / SiGeC-based and Ge-based Devices

      • Design, Modeling of HBTs & HEMTs, and Study of MSM/HEMTs and MSM/HBTs for

      • Fiber-Optic Communications.

(Abroad)

Division of IT Convergence Engineering, POSTECH, South Korea 

As Visiting Professor (Aug. – Nov., 2010)

Topic: In the Area of Nano Sensors and Systems.

Electronic & Electrical Engineering, University of Sheffield, Sheffield, UK

As Research Collaborator, UKIERI program (June 2013, Feb. 2015)

Topic: Superluminesecent LED for Optical Coherence Tomography.

Electronic & Electrical Engineering, University of Sheffield, Sheffield, UK 

Designation: Visiting Professor (Aug./Sept.’08),

Topic: Modeling of Type-II Superlattice MWIR & LWIR Photodetectors. 

Electrical and Computer Engineering, McMaster University, Canada

Designation: Visiting Professor (Apr.’05-June’05),

Topic: Modeling of Semiconductor Nanophotonic Detectors.

As Post Doctoral Research Associate (Sept.’01-July’02),

As Post Doctoral Fellow (1999 - August 2001)

Topics:

• Developing Models for Carrier build-up in APDs and Performance Analysis. • Modeling and Design of Heterostructure P-I-N photodetectors.

• Investigating Optimum Designs of Photoreceivers OEICs.

Doctoral Research: (1989 – 1993)

Institute of Radio Physics and Electronics, University of Calcutta, India

As Research Fellow, Studies include:

• • • • Quantization of Electron States in Quantum Wells, Quantum Wires and Quantum Boxes/Dots of different geometrical configurations in the presence of external electric and/or magnetic fields.

      • Quantized Field-emission and Photo-emission of electrons from semiconductor nanostructures.

      • Modified Einstein-relation, Magnetic Susceptibility due to electrons in submicron structures of semiconductors.

SUPERVISING EXPERIENCE

Research (Ph. D. Guidance): (2002 – present)

Institute of Radio Physics and Electronics, University of Calcutta, India

Ph.D. (Tech.) Degree Awarded – 15 (fifteen)

Titles:

• • • • 1. Some Studies on the Design of Si-Ge based Photodetector and HBT for Optical Communication

        2. On Certain Aspects of Optical Interaction in a Semiconductor Quantum Ring

        3. Performance Analysis And Optimum Design of WDM Receiver In Presence of Crosstalks

        4. Silicon-based Schottky Photodiodes for Optical Communication

        5. Optical Phase Locked Loop for Remote Carrier Signal Generation and Optical Reception (As Supervisor with a Joint Supervisor)

        6. On Certain Aspects of Electron Confinement In Quasi Zero Dimensional Semiconductor Nanostructures

        7. On Some Electronic and Optoelectronic Properties of Multiple Quantum Wells in Presence of Electric Field

        8. Study of Gain and Bandwidth of Avalanche Photodiodes with very Thin Multiplication Layer

        9. Performance Analysis and Design of Lateral Silicon Photodetector

        10. Theoretical Studies on Single Loop Optoelectronic Oscillator (as Joint Supervisor).

        11. On Generation and Control of Dynamics of Optoelectronic Oscillator  (As Supervisor with a Joint Supervisor) .

        12.  Design and Analysis of BTO-clad Silicon Waveguide Components for Compact Photonic Integrated Circuits

        13.   Analysis for Power and Linewidth of Superluminescent Light Emitting Diode with Ensemble of Self-Assembled Quantum Dots.

        14.  Analysis of WDM receiver performance for detection of amplitude and phase modulated signals in presence of component crosstalk     (as Joint-supervisor).

        15. Analysis Of Injection-locking And Injection-pulling Dynamics Of RF Signal Driven Single-loop Optoelectronic Oscillator 

        16. Exploring Light Dynamics in Quasi-Periodic Optical Lattices and Fiber Structures for Photonic Applications 

       Thesis submitted: 

  -

Continuing (Registered/Enrolled) Ph.D. Students: 5 (four)

(Areas:  On Semiconductor Nanostructures, Nitride-based Optoelectronics, Organic Semiconductor Electronic and Photonic Devices, Optoelectronic Oscillator)

Summer job (Summer 2000, 2001)

Electrical and Computer Engineering, McMaster University, Hamilton, Ontario, Canada.

• • • • Guided a 4th-year undergraduate student of Computer Engineering & Management to develop user interface for an Optical Device Simulator

      • Two undergraduate students (2nd year, 5th year) of Electrical & Computer Engineering were supervised to develop a graphical user interface (GUI) for simulation of photodetectors using MATLAB and VISUAL C++.

Students Project Work: B.Tech. and M.Tech. projects (1994 – 1999, 2002- till date) 

Institute of Radio Physics and Electronics, University of Calcutta, India

AWARDS, HONOURS & ACHIEVEMENTS

• • • INSA-DFG Visiting Scientist Award (2018)

    • Fellow of IE(I) in 2016

    • Life Fellow of IETE  (2004).

    • Awarded Senior Membership of IEEE in 2002.

    • Certificate from IEEE for Notable Services & Contributions towards the advancement of IEEE & the Engineering Profession (2004-2012).

    • Delivered Lectures as National Distinguished Lecturer of IEEE India (2009, 2011).

    • A paper with student received the URSI Young Scientist Award for the Student (General Assembly in Aug. 2008 in Chicago, USA).

    • Listed in Who’s Who in World (2007), Asia (2007), Science & Engineering (2006).

    • Adjunct Professor (invited) at the Academy of Technology, Hooghly, W.B. India (2006-2013).

    • Invited to attend in India-NRI Scientist meet in URSI GA, (Oct. 2005).

    • (Invited) Senior Guest Scientist in the School of Radio Science for South Asian Scientist, ICTP, Trieste, Italy, (Nov. 6-15, 2004)

    • Recipient of the National Scholarship of Merit (1978 -1986).

    • Qualified the Graduate Aptitude Test in Engineering (GATE) (1987,’88).

    • Qualified in the Indian Engineering Services (IES) examination (1987) for appointment (1989) in Telecommunication department of the Govt. of India, though finally opted to do research.

SPONSORED RESEARCH PROJECTS

• • • Erasmus Mundus LEADERS program between 20 European and Asian Universities since July 2015, as Key person for management, from University of Calcutta.

    • UK India Education and Research Initiative (UKIERI) Thematic partnership with University of Sheffield, UK since 2012 as P.I. from University of Calcutta, India

    • DST(Department of Science and Technology) sponsored project (India) on “Studies on Group IV Semiconductors and Their Alloys for Photonic Device Applications”for 3 yrs since Nov.2011 as PI. 

    • DST(Department of Science and Technology) sponsored project (India) on “Physics and Modeling of Silicon Nanophotonic Devices” for 3 years (2007-2010) as Co-P.I. 

ORGANIZING EXPERIENCE

• Student Branch Counselor of the University of Calcutta Student Branch, IEEE in the IEEE Calcutta Section, Region 10, 2006. Mentor and guide for students to hold activities leading to academic advancement as well as professional awareness.

• Chairman of the IEEE Photonics Society (formerly, LEOS) Calcutta Chapter, and also the Founder Chair of the Chapter in the year 2004.

• Local Sectional Secretary in ‘Materials Science’ Section of 100th Indian Science Congress to be held during Jan.3-7, 2013, organized by the University of Calcutta.

• Organizing Secretary/Convenor, Technical Program Chair, Chairman of the International Conference on Computers and Devices for Communication (CODEC) (Technical sponsorship by IEE, SPIE and IEEE societies- EDS, LEOS, AP, MTT) in 2004, 2006, 2009, 2015 at Kolkata, India.

MEMBERSHIP OF PROFESSIONAL BODIES

• • Fellow, Optical Society of India (2020-21)

  • Life Fellow, Inst. of Electronics & Telecommunication Engineers (FIETE)

  • Fellow, Institute of Engineers (India)

  • Senior Member, Inst. of Electrical & Electronics Engineers (SM-IEEE)

  • Life Member of the Indian Physical Society (IPS)

  • Life Member of the Indian Association for the Cultivation of Science (IACS)

  • Life Member of the Indian Science Congress Association (ISCA)

PROFESSIONAL SERVICES & ACHIEVEMENTS 

Reviewer

• • • Scientific Reports – Nature

    • IEEE Journal of Selected Topics in Quantum Electronics

    • IEEE Photonics Technology Letters

    • IEEE Transactions on Electron Devices

    • IEEE Transactions on Instrumentation and Measurements

    • IEEE Transactions on Microwave Theory and Technique

    • IEEE Journal of Lightwave Technology

    • (OSA) Applied Optics

    • (OSA) Optics Letters

    • IET Circuits, Devices and Systems

    • (Springer) Journal of Electronic Materials

    • (SPIE) Optical Engineering

    • (AIP) Review of Scientific Instruments

    • (Elsevier ) Opto-Electronics Review

    • IE (India) Journal

    • Indian Journal of Physics

Editorship

• • • Member, Editorial Board and also Editorial Advisor of the International Journal of Computers, Information Technology and Engineering (IJCITAE).

    • Was Guest Editor for the CODEC-06 Special Issue of the International Journal IJCITAE (2007).

    • Was one of the Guest Editors for the CODEC-04 Special Issue of the International Journal The IEE Proceedings (2005) on “Circuits, Devices and Systems”. 

International Conferences/ Seminar/ Symposium

• • • Chairman, International Conference on Computers and Devices for Communication CODEC-15 (Dec. 14-16, 2015) at Kolkata, India

    • Technical Program Chair of the International Conference CODEC-09 (Dec.14-16, 2009) and CODEC-06 (Dec.18-20, 2006) at Kolkata, India.

    • Organized International Conference on Computers and Devices for Communication (CODEC-04) as Secretary / Convenor during January 1-3, 2004 at Kolkata, India.

    • Delivered Invited Talk in more than 25 conferences/seminar/ symposium

    • Advisory Committee Member in many Conferences/ seminar

    • Session Chair/Co-Chair in many Conferences/Seminar

Professional Bodies

• • • Founder Chair of the IEEE Photonics Society (formerly LEOS) Calcutta Chapter (2004) and was also Chairman, Vice-Chairman, Secretary at different times.

    • Attended Award Banquet of IEEE LEOS in Montreal, Canada to receive the Most Improvement Chapter Award for The IEEE/LEOS Kolkata Chapter as its Founder Chair & the then Secretary.

    • Student Branch Counselor of IEEE University of Calcutta Student Branch since inception (2006). Member of Governing Body

    • Member of Syndicate (Aug. ‘13-July, ‘16), & Senate (Aug. ‘13-Nov.’16), University of Calcutta

    • Member of the Governing Council of Saha Institute of Nuclear Physics, DAE, Govt. of India.

    • Member of the Governing Body of Supreme Knowledge Foundation, West Bengal University of Technology, India.

Affiliation to Scientific/Technical Committees

• • • Chairman, R&D Project Evaluation Committee (Engineering & Technology), Department of Science & Technology & Biotechnology (DSTBT),Govt. of West Bengal(2017 -  ).

    • Expert Member (Nominated), ETCE, BOS committee, West Bengal State Council of Technical Education (2013)

    • Eternal Member, Full Board of Studies Meeting (BOS), ECE Dept., Mizoram University (2016)

    • Member, Moderation Board in Electronics, Mizorum University (2009)Guest Editor, Special Issue,The IEE Proceedings on “Circuits, Devices and Systems” (2005).

    • Member (External), Board of Courses and Studies, EE, Indian School of Mines, Dhanbad.

    • Member, Editorial Board and Editorial Advisor, International Journal of Computers, Information Technology and Engineering (IJCITAE) (2007 -).    

VISITS ABROAD

• • • Technical Universitat Dresden, Germany 

          Chair "Materials Science and Nanotechnology"

          Research Collaboration under INSA-DFG Bilateral Exchange programme, (Aug.-Sep. 2018)

• • •  University of Oradea, Romania

            Concluding meeting of Erasmus Mundus LEADERS programme, (July. 2018)

• • • University of Bristol, UK

            Electrical and Electronic Engineering,Exploring Research collaboration, (Feb. 2017)

• • • University of Sheffield, England, UK

      Research Collaboration  (Sept. 20-22, 2017)

• • • University of Glasgow, Scotland, UK

     Research Collaboration and Invited Talk  (Sept. 16-20, 2017)

• • • City, University of London, England, UK

      Research Collaboration and Invited Talk  (Sept. 11-15, 2017)

• • • University of Limerick, Ireland

      Selection Meeting of ERASMUS MUNDUS ‘LEADERS’ and ‘INTACT’ (April 12-13, 2016)

• • • University of Sheffield, UK

             Department of Electrical and Computer Engineering

             Feb. 2015: Research Collaborator under UKIERI program

• • • Bangkok, Kick-off Meeting of Erasmus Mundus LEADERS program organized by City University London (UK), and Bangkok University,(Thailand) (Oct. 2014)

    • University of Sheffield, UK

Department of Electrical and Computer Engineering

June 2013: Research Collaborator under UKIERI program

• • • Pohang Univ. of Science and Technology (POSTECH), South Korea

Division of IT Convergence Engineering

Aug-Nov., 2010: Visiting Professor (Teaching and Research) :

• • • University of Sheffield, UK

Department of Electrical and Computer Engineering

Aug./Sept. 3, 2008: Visiting Professor ( Research).

• • • Montreal, Canada

(Oct. 2006): Attended Award Banquet of the 19th AGM of IEEE LEOS to receive the Most Improvement Chapter Award on behalf of The IEEE/LEOS Chapter, Kolkata.

• • • McMaster University, Canada

Department of Electrical and Computer Engineering

(April.’05- June ’05): Visiting Professor (Research)

• • • International Centre for Theoretical Physics (ICTP), Trieste, Italy

(Nov.6 - Nov.15 ’04): Senior Guest Scientist (School on Radio Science for South Asian Scientists)

• • • McMaster University, Canada

Department of Electrical and Computer Engineering (Sept.’01- July ’02) : Post Doctoral Research Associate (1999 - August 2001): Post Doctoral Fellow

INVITED PRESENTATION (selected)

• • “On Generation and Detection of Photon in Quantum Key Distribution System”, Short Term Programme under Malaviya Mission Teacher Training Programme (MMTTC) on Photonic Quantum Key Distribution Network and Its Realization, Indian Institute of Technology (ISM) Dhanbad, India, 25-30 June, 2025.

  • “Nanophotonics: Future of Research and Industry”, Malaviya Mission Teacher Training Programme (UGC-MMTTC) on Interdisciplinary Refresher Course on Engineering and Technology , Mizoram University, India, 4-17 June, 2025.

  • “Light, Scattering, Raman Effect and Science Day”, National Science Day programme at Vivekananda Mission Mahavidyalaya, Purba Medinipur, West Bengal, February 28, 2025.

  • “Photonics: Indian knowledge origin and future directions”, Malaviya Mission Teacher Training Programme (UGC-MMTTC), on Indian Knowledge System in Science Technology Engineering and Management, Kolkata, West Bengal, India, January 16-22, 2025.

  • “Quantum Dot Nanophotonics”, 4th International Conference on Computer, Communication, Control and Information Technology  (C3IT 2024), Academy of Technology, Adisaptagram, West Bengal, India, Sept.28-29, 2024.

  • "Nanophotonics in Sensing and Imaging", 8th International Conference on Opto-Electronics and Applied Optics (OPTRONIX 2024), University of Engineering and Management (UEM), Kolkata, July 25, 2024.

  • "Nanophotonics - Principles and Applications", Summer School on Nanoscience and Nanotechnology, Centre for Research in Nanoscience and Nanotechnology, University of Calcutta, Kolkata, July 22, 2024.

  • (Plenary Lecture) “Nanoelectronics in Neuro-Inspired Artificial Intelligence”, National Seminar on Electronic Devices, Circuits and Systems (NSEDCS-2023), Berhampur University, Odisha, September 23-24, 2023.

  • “Quantum Dot Photonics for Biosensing and Bioimaging”, Indo-French Workshop on Disruptive Nano-photonics, funded by Indo-French Centre for the Promotion of Advanced Research (‘CEFIPRA’) and organized by CSIR-CSIO (Chandigarh, India) & CNRS-Institut Fresnel (Marseille, France), June 14-16, 2023.

  • (Keynote Talk) “Data-driven Photonic Crystal Sensor Design”, International Conference on Data Science and Communication (ICTDsC 2023), Siliguri Institute of Technology, West Bengal, India, March 23-24, 2023.

  • "Quantum Dots in Cellular/Sub-cellular Imaging – with design example from SLDs in OCT", Recent Advance in Emergng Electronics (Webinar) organized by Berhampore University, Odisha, India  under under World Bank OHEPEE Project, Feb. 22-23, 2022.

  • “Photonics For Sensing Applications”, AICTE Training And Learning (ATAL) Faculty Development Programme(Webinar) organized by Mizoram University, Mizoram, India, Feb. 15-19, 2021.

  • “Quantum Dot SLEDs as Broadband Optical Sources for Sub-Cellular OCT”, 6th International Conference on Opto-Electronics and Applied Optics (OPTRONIX-2020), June 08- 10, 2020, University of Engineering and Management (UEM), Klkata. 

  •  “Quantum Dot Superluminescent Light Emitting Diode for Optical Coherence Tomography in Sub-Cellular Imaging”, International Seminar cum Research Colloquium on MEMs based Sensors and Smart Nanostructured Devices (MSSND), Dec. 27- 28, 2019, Jadavpur University, Kolkata.

  • “Light Emitting Diodes -Advances and Applications”, Invited talk at the Technical Event organized by IEEE Photonics Society Kolkata Chapter and IEEE IEM Student Branch, Nov. 14, 2019, Institute of Engineering and Management (IEM) Saltlake, Kolkata.

  • “Photonics:Enabler of Next Generation Technology”,Special Lecture at Techno International Batanagar, West Bengal, India, April 23, 2019.

  • “Photonics in Information Age”, One-day Seminar “Photonics As Future Of Technology (PhotAFOT)’, an outreach program by IEEE Photonics Society Kolkata Chapter, Feb. 02, 2019, ECE Dept, Supreme Knowledge Foundation Group of Institutions, Mankundu, West Bengal, India.

  • “Semiconductor based Optoelectronic Devices”, Faculty Development Programmeorganized by Association of Professional Academic Institution (APAI), Kolkata, India, January 15-19, 2019.

  •  “Optoelectronic Devices – Basics to Advances”, Faculty Development Programmeorganized by Techno India Group (TIG), Kolkata, India, January 14-18, 2019.

  • "Some Theoretical Studies – Possible Resource for Data-Driven Material Science", Summer School on DCMS Materials 4.0, at Technical University Dresden, Germany, September 10-14, 2018.

  • "Some Theoretical Investigations on Semiconductor Nanostructures", Seminar, Visit under INSA-DFG programme, at Chair of Material Science and Nanotechnology, Technical University Dresden, Germany, Aug.23, 2018.

  •  “Semiconductor Photonic Devices For Optical Communication - Optical Sources”, Electronics Techno-Cultural Fest ‘VISTAAR 2K18’, at Indira Gandhi Institute of Technology (IGIT), mentored program by TEQIP, University of Calcutta, at Sarang, Odisha, India, 2018.

  • (Plenary Lecture) “Study Engineering and Contribute to Society”, in Orientation Programme at Abacus Institute of Engineering & Management, Hoogly, India, Aug. 06, 2018.

  • (Keynote Talk), “Advances in Semiconductor based Photodetectors”, International Conference onEmerging Trends in Engineering Sciences(ETES),Asansol Engineering College (AEC), Asansol, India, March 24, 2018.

  • (Keynote Talk), “Advances in Electronics – A brief Account”, UGC-HRDC Special Winter Schoolon  Electronics – Science Engineering And Technology (E-SEAT),University of Calcutta, Kolkata, India, Feb. 26, 2018.

  • “Semiconductor Optoelectronics”, UGC-HRDC Refresher Courseon “Advances in Engineering & Technology”, Guru Ghasidas Vishwavidyalaya, Bilaspur, Raipur, India, June 5-24, 2017.

  • “Nanostructures for Electronics and Photonics”, UGC-HRDC Refresher Course, on “VLSI Desgn and Nanotechnology: Issues and Challenges”, Jadavpur University, Kolkata, India, Nov.28-Dec.17, 2016.

  • “Semiconductor for Light Detection and Light Emission”, Short  Term Training Program, on “Semiconductor: Devices & Solar PV Module”, National Institute of Technical Teachers Training and Research (NITTTR), Sept. 29, 2016.

  • “Modeling and Optimum Designs of Semiconductor Photodetectors and Integrated Photoreceivers”, School of Engineering, University of Glasgow, Scotland, UK,  Sept. 16, 2016.

  • “Modeling and Design of Semiconductor Photonic Devices”, School of Mathematics, Computer Science and Engineering, City, University of London, England, UK,  Sept. 15, 2016.

  •  Lecture 1:”Optoelectronic Devices – Basics and Application in Cutting Edge Technology for Developing Human Society”,  Lecture 2:“Modeling of Optoelectronic Devices –How to Approach”, Short Term Course on Modeling and Simulation of Optoelectronic Devices and Solar Photovoltaics (MSODSP) organised by IIT (ISM) Dhanbad, Aug.29-Sept.02, 2016.

  • (Keynote talk) “Towards Aggressive Integration and Convergence of ICT – A case study with mobile phones”, in UGC NRCPS School on VLSI, Communication and Microelectronics (VCOMM) (March 28 – April 15, 2016), Institute of Radio Physics and Electronics, University of Calcutta.

  • “Semiconductor Photonic and Nanophotonic Devices,” Outreach Program under UGC NRCPS program, TRIPURA University, Feb. 29, 2016.

  • “Infrared Photon Detectors”, Seminar to celebrate closing of International Year Light at Barrackpore Rastraguru Surendranath College, technically sponsored by IEEE Photonics Society Kolkata Chapter and Calcutta University Student Branch, Feb.02, 2016.

  • “Device for Photonic Systems”, Workshop organised by OSA student Chapter, School of Electronics Engineering, KIIT University, Bhubaneswar, Dec. 13, 2015.

  • “Silicon Based Photonic Devices”, Workshop on Recent Trends in Photonics Technology (RTPT-2015) to commemorate International Year of Light organised by OSA and SPIE student Chapter, ISM Dhanbad, August 22, 2015.

  • “Semiconductor Optoelectronic Devices and Applications”, Short Term Training Program, National Institute of Technical Teachers Training and Research (NITTTR), July 15, 2015.

  • “Devices For Optical Transmission System”, Short Term Training Program,National Institute of Technical Teachers Training and Research (NITTTR), July 15, 2014.

  • “Advances in Solid State Semiconductor Devices For Photonic Applications”, Faculty Development Program , RCCIIT, Feb. 10, 2014.

  • “Devices for Fiber Communication, Faculty Development Program, University of Calcutta, Jan.30, 2014.

  • “Semiconductor Photonic Devices And Nanophotonics”, Lecture in Refresher Course, ETCE Dept., Jadavpur University, Dec. 12, 2013.

  • “Infrared Photodetectors at Medium and Long Wavelengths,” National Conference (NCAE), ADAMAS Institute of Technology, WBUT, Oct., 26, 2013.

  • “Semiconductor Photonic Devices for Optical communications”, in 2nd National Conference on Advanced Communication and Systems and Design Techniques (NCACD), Haldia Institute of Technology, West Bengal, India, Sep.29-30, 2012.

  • “Photonic Devices for Optical communications”, in National Seminar in Microwave and Optical Communication Systems (NS MOCS 2012), Swami Vivekananda Institute of Science and Technology, West Bengal, India, Sep.21-22, 2012.

  • “Advances in Semiconductor Photonic Devices for Optical Communication”, in the IEEE National Distinguished Lecture Program (NDLP) Lecture, Mizorum University, Mizorum, India, Mar. 23- 26, 2011.

  • Lectures on “Excess Carriers in Semiconductors” and “Photodetectors”, Winter School on Semiconductor Fabrication and Characterization Techniques (FABTech) organized by the Institute of Radio Physics and Electronics, University of Calcutta, under “UGC Networking Centre” programme during Feb. 14-Mar. 4, 2011.

  • IIEEE Lecture on “Si CMOS Photodetectors and Photoreceivers” organised by the IEEE Electron Devices Society Chapter of the IEEE Calcutta Section, April 12, 2010.

  • “Advances in Optical Detectors” in the Conference on Engineering Education in the New Century (E2NC) during Apr.3-4, 2010, Supreme Knowledge Foundation(SKF), Mankundu,Hooghly, India.

  • “Optical Transmitter and Optical Receiver”, Short Term Training Program, on “Fibre Optic Communication” during Feb. 15-19, 2010, at National Institute of Technical Teachers’ Training (NITTTR), Kolkata, India.

  • “Si-based Photodetector in Optical Communication”, in the International Conference on Emerging trends in Electronic and Photonic Devices and Systems (ELECTRO-2009), during Dec. 22-24, 2009 at Institute of Technology- Benarus Hindu University (IT-BHU), Varanasi, India.

  • “Some Aspects of Modeling Semiconductor Photonic Devices”, in the Workshop under UK-India Collaborative Program, organized jointly by the University of Calcutta, India and the University of Sheffield, UK, Dec. 13, 2009, Kolkata, India.

  • “Semiconductor Photonics –A Brief Review”, West Bengal State University, Barasat, West Bengal, Nov. 14, 2009.

  • “Advances in Semiconductor Photonic Devices – Part I & Part II”, in the IEEE ‘National Distinguished Lecture Program’ (NDLP) Lecture, at North-Eastern Regional Institute of Science and Technology (NERSIT), Arunachal Pradesh, India, Aug. 7-9, 2009.

  • “Semiconductor Nanophotonic Devices”, Two-day Workshop on “Photonics to Nanophotonics’ , organised by IEEE Photonics Society Calcutta Chapter, June 12-13, 2009, Kolkata, India.

  • Series of Lectures on “High Electron Mobility Transistor” in the Summer School on Nanoelectronic Devices (NanoDev) organized by the Institutte of Radio Physics and Electronics, University of Calcutta, under “UGC Networking Centre” programme during June 1-19, 2009.

  • “Advances in Devices for Optical Communication “in One-Day Workshop organized by the Asansol Engineering College, WB, India in association with the IEEE LEOS Calcutta Chapter, IEEE C.U. Student Branch as a part of IEEE National Distinguished Lecture Program, India, April 17, 2009.

  • IEEE Lecture on “Semiconductor Nanophotonic Detectors for Special Area Applications” organised by the IEEE Electron Devices Society Chapter, IEEE Calcutta Section, March 19, 2009.

  • IEEE Lecture on “Advances in Avalanche Photodiode for Optical Detection” organised by the IEEE Lasers and Electro-Optics Society Calcutta Chapter, Jan.7, 2009.

  • “Component Crosstalk in WDM Optical Network”, in a Short course organized by National Institute of Technology, Silchar, India during Dec. 24-28, 2008.

  • “Avalanche Photodiode in a WDM Receiver System”, in a Short course organized by National Institute of Technology, Silchar, India during Dec. 24-28, 2008.

  • Series of Lectures on “PHOTONIC DEVICES” in the Summer School “SemiNano” organized by the Institutte of Radio Physics and Electronics, University of Calcutta, under “UGC Networking Centre” programme during June 2-20, 2008, India.

  • “Quantum Dot for Seeing in the Dark”, delivered in National Conference on Creativity in Engineering Education, Feb.9-10, 2008 at Academy of Technology (A.O.T.), Hooghly, India.

  • “Optical Sources and Detectors”, in One-Day Tutorial on Microwave Multiplexed Lightwave System – A Flavour of Microwave Photonics, Jan. 11, 2008, A.O.T., Hooghly, India.

  • “Advances in Semiconductor Photonic Devices”, in Faculty Development Program, July 2-6, 2007, Siliguri Institute of Technology, Siliguri, India.

  • “Semiconductor Nanostructures for Photodetector Application” at the National Workshop on Nano-Science & Technology, Quantum Computing and Its Applications held in March 10, 2007 at Haldia Institute of Technology, India.

  • Lecture on “Optical Detectors and Receivers” in One-day Workshop organised by IEEE LEOS Chapter, IEEE Calcutta Section (Sept.30 2005).

  • Invited Poster Presentation at the Workshop of Ontario Photonics Consortium (OPC), June 2005, Canada.

  • “Advanced Photodetectors for Optical Communication”, as a Senior Guest Scientist at the International Centre for Theoretical Physics (ICTP), Trieste, Italy, Nov. 2004, Italy.

  • IEEE Lecture on “High Performance Photoreceiver OEICs: From Advanced Laboratory to Consumer Market” organised by the IEEE Electron Devices Society Chapter of the IEEE Calcutta Section, April 29, 2004.

  • “SiGe and SiGeC-based Devices for Si-based Photonics”, 12th International Workshop on The Physics of Semiconductor Devices, (IWPSD-2003), at IIT Madras, Chennai, India, Dec.16-20, 2003.

  • “Integrated Silicon Photoreceivers for Optical Communication”, 6th International Conference on Optoelectronics, Fiber Optics & Photonics, (PHOTONICS-2002), at TIFR, Mumbai, India, Dec.16- 18, 2002.

BOOKS/ BOOK CHAPTERS

• • N. R. Das and Santu Sarkar, Eds., Computers and Devices for Communication, (Proceedings of CODEC 2019), Lecture Notes in Networks and Systems, Vol. 147, (566 pages), Springer, Singapore, 2021, https://doi.org/10.1007/978-981-15-8366-7. 

  • N. R. Das, “Advances in Semiconductor Photodetectors for Infrared Applications”, In: “Advances in Microelectronics and Photonics”, Ed. S. Jit, Chapter No. 9, (33pages), Nova Science Publishers, Inc., 2011.

  • N. R. Das, Y.M. El-Batawy and M.J. Deen, Optoelectronic Integrated Circuit Photoreceivers for Fiber-optic Telecommunication, in Integrated Optoelectronics, Eds. M. J. Deen, D. Misra and J. Ruzyllo, The Electrochemical Society Inc., PV 2002-4, NJ, USA, pp.163-193, 2002

ARTICLES/ BOOK SERIES/MONOGRAPHS

• • Piyali Mukherjee and N. R. Das, “Design of a Microring Resonator Having High Sensitivity for Biosensing Applications”, in Advances in Smart Communication Technology and Information Processing: OPTRONIX 2020.

  • Madhusudan Mishra and N. R. Das, “Trenched Core Waveguide Structure for Photonic Integrated Circuit” in “Computers and Devices For Communication”, N. R. Das and Santu Sarkar (Eds.), Lecture Notes in Networks and Systems, Springer Nature Singapore Pte. Ltd., vol.147, pp.321-325, 2021.

  • Shampa Guin and N. R. Das, “Photon Density Distribution in Quantum Dot-Based Light-Emitting Diode” in "Computers and Devices For Communication", N. R. Das and Santu Sarkar (Eds.), Lecture Notes in Networks and Systems, Springer Nature Singapore Pte. Ltd., pp.331-335, 2021.

  • Sonali Basak, Santu Sarkar, and N. R. Das, “Modes and Coupling in Seven-Core Optical Fiber”, in "Computers and Devices For Communication", N. R. Das and Santu Sarkar (Eds.), Lecture Notes in Networks and Systems, Springer Nature Singapore Pte. Ltd., pp.344-349, 2021.

  • Santu Sarkar, Pinak Pani Mukherjee and N. R. Das, A Comparative Study on Determination of Optimum Detection Threshold for Minimum BER in a WDM Receiver with SRS and FWM Crosstalk, in “Computers and Devices For Communication”, N. R. Das and Santu Sarkar (Eds.), Lecture Notes in Networks and Systems, Springer Nature Singapore Pte. Ltd., pp.363-368, 2021.

  • M. Mishra and N.R. Das, Role of Coupling Angle on the Performance of a Ring Resonator–Waveguide Sensor, In: Janyani V., Singh G., Tiwari M., Ismail T. (eds) Optical and Wireless Technologies, Lecture Notes in Electrical Engineering, Springer, Singapore, 648, pp. 155-160,  (2020).

  • A. Ghosh, A. Pal and N.R. Das, A Simple Structural Design for Tuning of Bandgap and Window in 1D Photonic Crystal, In: Janyani V., Singh G., Tiwari M., Ismail T. (eds) Optical and Wireless Technologies, Lecture Notes in Electrical Engineering, Springer, Singapore, 648, pp. 127-136,  (2020).

  • S. Mukhopadhyay, S. Das and N.R. Das, An Approach for Reduction of Cross-Talk in Multi-core Optical Fibers, In: Janyani V., Singh G., Tiwari M., Ismail T. (eds) Optical and Wireless Technologies, Lecture Notes in Electrical Engineering, Springer, Singapore, 648, pp.111-118,  (2020).

  • Pinak Pani Mukherjee, N. R. Das and S. Sarkar, “Comparison of Power Penalty due to Component, SRS and FWM Crosstalk in a WDM Receiver”,in “Advances in Computer, Communication and Control,” U. Biswas et al. (Eds.), Lecture Notes in Networks and Systems, Springer Nature Singapore Pte. Ltd., pp.305-309, 2019.

  • M. Mishra, F. Morichetti and N. R. Das, “Ferroelectric-Cladded Tunable Silicon Photonic Couple”,in “Advances in Computer, Communication and Control,” U. Biswas et al. (Eds.), Lecture Notes in Networks and Systems, Springer Nature Singapore Pte. Ltd., pp.401-405. 2019.

  • Shreerupa Biswas, S. Guin and N.R. Das, “Photonic Crystal for Gas Sensing Application” in“Advances in Computer, Communication and Control,” U. Biswas et al. (Eds.), Lecture Notes in Networks and Systems, Springer Nature Singapore Pte. Ltd., pp.449-467. 2019.

  • Piyali Mukherjee and N. R. Das, “Tailoring the parameters to increase the efficiency of a microring resonator sensor for biosensing”,  in “Advances in Computer, Communication and Control,” U. Biswas et al. (Eds.), Lecture Notes in Networks and Systems, Springer Nature Singapore Pte. Ltd., pp.477-485. 2019.

  • D. Ghosh, A. Mukherjee, N. R. Das, B. N. Biswas, A Study on the Effect of an External Periodic Signal in a Chaotic Optoelectronic Oscillator, In: S. Chattopadhyay, T. Roy, S. Sengupta, C. Berger-Vachon (eds),Modelling and Simulation in Science, Technology and Engineering Mathematics. MS-17 2017,Advances in Intelligent Systems and Computingbook series, Springer, Cham, 749, pp.27-36 (2018).

  • A. Deyasi and N. R. Das, “Effect of gate voltage and structural parameters on the Subthreshold Swing and the DIBL of Si-SiO2 GAA quantum wire transistor”, in Frontiers in Computer, Communication and Electrical Engineering– Acharyya (Ed.), Taylor & Francis Group, London, (ISBN: 978-1-138-02877-7), pp.43-47, 2016.

  • Arpan Deyasi, and N. R. Das, Oscillator Strength and Absorption Cross-section of Core-Shell Triangular Quantum Wire for Intersubband Transition, In: V. Lakshminarayanan, I. Bhattacharya (eds) Advances in Optical Science and Engineering, Chapter 78, Springer Proceedings in Physicsbook series Springer, New Delhi, 166, pp.629-635(2015). 

  • Arpan Deyasi, and N. R. Das, Effect on Shell Thickness on Intersubband Transition Energies in GaAs/AlxGa1−xAs Inverted Core–Shell Nanodot, In: P. Giri, D. Goswami, A. Perumal (eds) Advances in Optical Science and Engineering,Springer Proceedings in Physics (book series), Springer, Berlin, Heidelberg, 143, pp.551-560(2013). 

SPECIAL ARTICLES

• • N. R. Das, “Photonics for Ecological Balance— Outreach Extempore Speech Program”, IEEE Photonics Society Newsletter, Vol. 33, No.5, pp.20-22, Oct. 2019.”

  • N. R. Das, “Nanotechnology and Healthcare”, an invited publication in a Souvenir (2013).

RESEARCH JOURNALS

Some Selected Publications:

• • N. R. Das, P.K.Basu and M.J.Deen, A New Approach to the Design Optimization of HEMT and HBT for Maximum Gain-Bandwidth of MSM-Based Integrated Photoreceiver and its Noise Performance at 1.55 μm, IEEE Transactions on Electron Devices, 47, pp. 2101-2109, (2000).

  • N. R. Das and M.J.Deen, Low Bias Performance of Avalanche Photodetector - A Time Domain Approach, IEEE Journal of Quantum Electronics, 37, pp.69-74, (2001).

  • N. R. Das and M.J. Deen, Calculating the Photocurrent and Transit-Time Limited Bandwidth of a Heterostructure PIN Photodetector, IEEE Journal of Quantum Electronics, 37, pp. 1574-1587, (2001).

  • N. R. Das and M.J. Deen, A New Model for Avalanche Build-Up of Carriers in a SAGCM Avalanche Photodiode, IEEE Transactions on Electron Devices, 49, pp.2362-2366, (2002).

  • N. R. Das and M.J. Deen, On the frequency response of a resonant-cavity-enhanced separate absorption, grading, charge, and multiplication avalanche photodiode, Journal of Applied Physics, 92, pp. 7133-7145(2002).

  • Yasser M. El-Batawy, M. J. Deen, and N. R. Das, Analysis, Optimization, and SPICE Modeling of Resonant Cavity Enhanced p-i-n Photodetector, IEEE Journal of Lightwave Technology, Vol. 21, pp. 2031-2043, (2003).

  • N. R. Das and M. Jamal Deen, On the Performance Analysis and Design of Integrated Front-End PIN/HBT Photoreceiver, IEEE Journal of Quantum Electronics, 40, pp. 78-91 (2004).

  • N. R. Das and M. Jamal Deen, A Model for the Performance Analysis and Design of Waveguide PIN Photodetectors, IEEE Transaction on Electron Devices, 52, pp.465-472, (2005).

  • Mukul K Das and N. R. Das, Effect of Ge-composition on the Frequency Response of a Si/Si1-yGeyP-i-N Photodetector, Optical Engineering (SPIE), 45, p.124001, (2006).

  • Himadri Sekhar Dutta, N. R. Das and Mukul K. Das, Investigating the Effect of Heterointerface Trapping on the Perfomance of a RCE Ge-on-Si Schottky Photodiode at 1.55um, Semiconductor Science and Technology,23, 085012 (2008).

  • S. Bhattacharyya, N. R. Das and Susmita Sen, Electrical Tuning of Intersubband Transition in a Semiconductor Quantum Ring, Journal of Applied Physics, 105, 053108 (2009).

  • Santu Sarkar and N. R. Das, Study of Component Cross-talk and Obtaining Optimum Detection Threshold for Minimum Bit-Error-Rate in a WDM Receiver, IEEE Journal of Lightwave Technology, 19, 159-171, (2009).

  • Mukul K Das and N. R. Das, On optimum designs of a RCE Si/SiGe/Si MQW photodetector for long wavelength applications, Optical and Quantum Electronics, 41, pp.539–549, (2009).

  • Mukul K Das and N. R. Das, Calculating the Responsivity of a Resonant-Cavity-Enhanced Si1-xGex/Si Multiple Quantum Well Photodetector, Journal of Applied Physics, 105, 093118 (2009).

  • Kasturi Mukherjee and N. R. Das, Tunneling Current Calculations for Nonuniform and Asymmetric Multiple Quantum Well Structures, Journal of Applied Physics, 109, 053708, (2011).

  • N. R. Das and Santu Sarkar, Probability of Power Depletion in SRS Cross-talk and Optimum Detection Threshold for Minimum BER in a WDM Receiver, IEEE Journal of Quantum Electronics, 47, pp.424-430, (2011).

  • N. R. Das and Paulami Rakshit, On the Frequency Response and Optimum Designs for Maximum Bandwidth of a Lateral Silicon Photodetector, IEEE Journal of Lightwave Technology, 29, pp. 2913-2919, (2011).

  • N. R. Das, M W Shinwari, M J Deen and Jeong-Soo Lee Electron states in a silicon nanowire in the presence of surface potential and field, Nanotechnology, 23, 415201(15pp), (2012).

  • Santu Sarkar and N. R. Das, On the Optimum Detection Threshold for Minimum Bit-Error-Rate due to Four Wave Mixing in a WDM System, (OSA/IEEE)Journal of Optical Communication and Networking, 5, pp.370-377,(2013).

  • Arpan Deyasi, Swapan Bhattacharyya, and N. R. Das, Computation of Intersubband Transition Energy in Normal and Inverted Core-Shell Quantum Dots using Finite Difference Technique, Superlattices and Microstructures, l.60, pp.414-425, (2013)

  • Kanishka Majumder and N. R. Das, Gain and Bandwidth Analysis and Comparison for GaAs and Si Avalanche Photodiodes with Very Thin Multiplication Layer, Optical Engineering, 52, 054001, (2013).

  • Arpan Deyasi, Swapan Bhattacharyya, and N. R. Das, A finite-difference technique for computation of electron states in core–shell quantum wires of different configurations, Physica Scripta, 89, 065804, (2014).

  • K Majumder and N. R. Das, Effects of alloy composition on gain and bandwidth of Si/SiGe and Si/GeSn avalanche photodiodes, Optik-International Journal for Light and Electron Optics, 127, pp.3059-3064, (2016).

  •  D. Ghosh, A. Mukherjee, N. R. Das, B. N. Biswas, Control of coexisting periodic oscillations in an Optoelectronic Oscillator, Optical Engineering, 57, 126108 (2018).

  • S. Guin and N. R. Das, Enhancement of optical gain in quantum dot ensemble with electric field, Superlattices and Microstructures, 125, pp.151-158, (2019).

  • M. Mishra, N.R. Das, A. Melloni and F. Morichetti, “Modelling domain switching of ferroelectric BaTiO3 integrated in silicon photonic waveguides”, Optics Communications, 448, pp.19–25 (2019).

  • M. Mishra, N. R. Das, F Morichetti, Waveguide design optimization for compact silicon photonic ferroelectric phase shifters, Applied Optics, 59, pp.4385-4391 (2020).

  • E. Baek, N.R. Das, C.V. Cannistraci, et al., Intrinsic plasticity of silicon nanowire neurotransistors for dynamic memory and learning functions, Nature Electronics (2020). 

  • Shampa Guin and Nikhil Ranjan Das, Modeling power and linewidth of quantum dot superluminescent light emitting diode, Journal of Applied Physics, 128, 083102 (1-9), (2020); https://doi.org/10.1063/1.5131550. 

  • A. Banerjee, J. Sarkar, L. A. D. de Britto, G. M. Pacheco, N. R. Das,  On the Transient Behavior of Single-loop Optoelectronic Oscillators under RF Injection-Locking, IEEE Journal of Quantum Electronics, 56, 5000213(1-13), (2020), DOI:10.1063/1.5131550.

  • Suman Dey, N. R. Das and Somnath Ghosh,  Exploring unconventional features of light dynamics in Aubrey–André–Harper model based quasi-periodic optical lattices, Optics Communications, 506, 127593, (2022), https://doi.org/10.1016/j.optcom.2021.127593 

  • D. Ghosh, A. Mukherjee, S. Mandal, N. R. Das, B. N. Biswas, Controlling birhythmicity in a new Dual Loop Optoelectronic Oscillator with an injection locked van der Pol oscillator, Physica D: Nonlinear Phenomena, 436, Art.133324, (2022).

  • M. Mishra and N. R. Das, Design of Compact Si Photonic Directional Coupler Introducing Hetero-Cladding Approach, Journal of the Optical Society of America B (JOSA B), (2022), https://doi.org/10.1364/JOSAB.454041. 

  • Suman Dey, N. R. Das and S. Ghosh, High power pulse delivery over a short distance through an all-solid anti-resonant microstructured optical fiber at 2μm wavelength, Optical Fiber Technology, 81, 103575 (2023).

  • N. R. Das and Moubani Bandyopadhyay, Alloy Composition Dependent Built-in Polarization Fields and Quantized Carrier States in III-Nitride Multi-Quantum Well Structures, Journal of Applied Physics, 135, 203105 (2024). https://doi.org/10.1063/5.0203312. 

  • Suman Dey, N. R. Das , Voltage controlled light states in a spatially pseudo-random bit sequence encoded optical lattice, Journal of Applied Physics, 137,  013103 (2025). https://doi.org/10.1063/5.0237898 

  • Suman Dey, N. R. Das and S. Ghosh, Topological Guidance in a Quasiperiodically Modulated Coupled Multicore Optical Fiber, IEEE/Optica Journal of Lightwave Technology , 43, pp. 4934-4939 (2025). https://doi.org/10.1109/JLT.2025.3539994  

  • Monideepa Dutta, N. R. Das and Ghader Darbandy, A physics-based DC model for organic transistors incorporating contact effects, Journal of Applied Physics, 137,  125502  (2025). https://doi.org/10.1063/5.0246903