Teaching

Subjects taken (summary): Course details are mentioned below. Also, please take a look at the course materials below.

1) At IIT Bhubaneswar (IITBBS), India: 

Spring 2025: 

 (I) Introduction to Signal Processing (EC2L008)

(ii) Digital Electronics and Microprocessor laboratory (EC2P006)

2) At Leibniz University Hannover (LUH), Germany: 

Spring and Autumn 2024 and 2023: 

(i) Applied Quantum Photonic Technologies (principal course instructor: Prof. Dr. Michael Kues)

3) At IIT Kharagpur (IITKGP), India: 

Spring 2019

(i) Nonlinear optics and integrated photonics (principal course instructor: Prof. Basudev Lahiri)

Spring 2017

(i) Basic Electronics (Theory)

Spring 2016 

(i) Basic Electronics Laboratory (EC29001)

Autumn 2015

(i) Optical Communication Systems (EC60023) (principal course instructor: Prof. Shailendra K. Varshney)

Spring and Autumn 2012 

(i) Advances in Digital Satellite Communications (EC60126) (principal course instructor: Prof. Kalyan Bandhopadhyay)

(ii) RF Network and Designigning Laboratory (EC69012) (principal course instructor: Prof. Arijit De)

(iii) Satellite Communications Systems (EC60101) (principal course instructor: Prof. Kalyan Bandhopadhyay)

(iv) RF and Microwave Circuits Laboratory (EC69019) (principal course instructor: Prof. Ramesh Garg)

Course details: 

1. Introduction to Signal Processing (ISP)

Semester: Spring 2025

Principal course instructor: Dr. Raktim Haldar, Indian Institute of Technology Bhubaneswar (IIT Bhubaneswar), Odisha, India.

Course overview: 

This course

Course speciality: Generally, signal processing is considered a core course for Electronics & Communication Engineers. However, the course I'm taking in Spring 2025 at IITBBS is a lateral course designed for the B.Tech. students from Mechanical Engineering, Civil Engineering, and Metallurgical Engineering. Therefore,  the most challenging part of this course is to relate it with all the other engineering branches, including Mechanical, Civil, and Metallurgy, and motivate the students to find out the applications of signal processing in their field of study.  Therefore, in each part, I have included discussions and specially designed problems specific to each engineering branch. Our discussion was not restricted to only engineering problems, but I tried to cater a flabour of the applications of signal and systems in basic sciences from geophysics and astronomy to the latest development in quantum physics. For example: 

1. We have detailed discussions on a broad category of systems: Linear, Nonlinear, Chaotic, Fractal, etc. Each time, we mentioned a few examples of real-life mechanical systems. For instance, we discussed when a spring or pendulum is linear, when it becomes nonlinear. What is a spring's elastic limit? what is the breaking threshold, and we also discussed simple chaotic systems like a double pendulum, or a population of insects. We also studied laser systems. 

2. We discussed the significance of random numbers and noise in detail. I pointed out several applications of random numbers, especially in cryptography (both classical and quantum).

3. While teaching signal convolution, our discussion was not limited to only electrical systems and their responses. We had a meticulous analysis of cracks in a system, effects of different kinds of loading to bridges, and so on. 

4. During Laplace Transformation, we covered circuit analysis, mass-spring damper systems, and so on.

2. Digital Electronics and Microprocessors (DEM) Laboratory

Semester: Spring 2025

Principal course instructor: Dr. Raktim Haldar with Dr. Atri Mukhopadhyay (subject instructor), Indian Institute of Technology Bhubaneswar (IIT Bhubaneswar), Odisha, India.

Course overview: 

3. Applied quantum photonic technologies

Semester: Spring and Fall 2024 and 2023

Principal course instructor: Prof. Dr. Michael Kues, Institute of Photonics (IOP), Leibniz University Hannover, Germany.

Course overview: 

This interdisciplinary course is designed for students from a broad range of backgrounds, for example, physics, optical engineering, electronics and communication engineering, computer science, quantum engineering, etc. The course commences with a concise overview of quantum technologies, encompassing quantum computation and communication, highlighting their advantages over classical counterparts. This section delves into various quantum computational and cryptographic algorithms. Following that, we briefly explore and compare different platforms for implementing quantum technologies in practical settings, including superconducting, NV-center-based technologies, and photonics, considering DiVincenzo's criteria. Subsequently, we focus on photonics as a platform for quantum computer development, covering essential concepts of integrated photonics devices. Finally, the course investigates contemporary topics related to quantum photonic technologies, discussing future prospects and opportunities in academic research and industry. The program also incorporates a few laboratory visits. 

Pic courtesy: Teaching is something I'm passionate about. I am thankful to my beloved students for capturing moments in my actions and sending me. 

However, you will be punished for clicking the photos next time instead of focusing on my classes 😅!

2. Nonlinear Optics (as a part of Nanophotonics)

Semester: Fall and Spring 2019

Principal course instructor: Prof. Basudev Lahiri, E&ECE Department, IIT Kharagpur, India

Course overview: 

As a part of a one-semester course, 'Nanophotonics,' conducted by Prof. Basudev Lahiri at E&ECE, IIT Kharagpur, I have independently designed lectures on the basic nonlinear optics covering basic nonlinear phenomena, chaos dynamics, nonlinear optical sources, second and third order nonlinearity, Raman and Brillouin effects, and some special topics, e.g., optical solitons, supercontinuum, Kerr frequency combs, and their applications in the optical communications.

3. Optical Communication Systems

Semester: Fall and Spring 2014, 2015, 2016

Principal course instructor: Prof. Shailendra K. Varshney, E&ECE Department, IIT Kharagpur, India

Course overview: 

In this course, we discuss fiber optic communications in detail. The course covers a broad range of topics, such as optical sources, basic optical components, optical fibers, fiber modes, dispersion engineering, loss management, etc. Finally, the students are trained with real-life problems involving optical components and link-budget. This course includes at least two lab visits to the Fiber Optic System Laboratory (FOSLAB), and the installed fiber optic networks at the GS Sanyal School of Telecommunication, IIT Kharagpur.

4. Satellite Communication Systems (I) and Advanced Satellite Communications (II)

Semester: Fall and Spring 2012, 

Principal course instructor: Prof. Kalyan Bandyopadhyay, E&ECE Department, IIT Kharagpur, India, Indian Space Research Organization (ISRO), India

Course overview: 

These two-semester course (I and II) provide a preliminary understanding of satellite orbits, geostationary satellites, low earth orbit (LEO) satellites, different kinds of payloads, communication systems, uplink, downlink, link budget, digital communication systems used in advanced satellite communication systems, etc.