Research 

   International Journals

1. Narendra Singh and Aloka Sinha, “Optical image encryption using Hartley transform and logistic map”, Optics Communications, Vol. 282, Issue No. 6, Pages 1104-1109,15 March 2009,

2. Narendra Singh and Aloka Sinha, “Optical image encryption using fractional Fourier transform and chaos”, Optics and Lasers in Engineering, Vol. 46, Issue  No. 2, Pages 117-123,February 2008.

3. Narendra Singh and Aloka Sinha, “Gyrator transform-based optical image encryption using chaos”, Optics and Lasers in Engineering, Vol.  47, Issue No. 5, Pages 539-546, May 2009.

4. Narendra Singh and Aloka Sinha, “Chaos based secure communication system using logistic map”, Optics and Lasers in Engineering,  Vol.  48, Issue No. 3, Pages 398-404, May 2010.

5. Narendra Singh and Aloka Sinha, “ Chaos based multiple image encryption using multiple canonical transforms ”, Optics and Laser Technology, Vol.  42, Issue No. 5, Pages 724-731, July 2010.

6. Narendra Singh and Aloka Sinha, “Optical image encryption using improper Hartley transforms and chaos”, Optik - International Journal for Light and Electron Optics,  Vol.  121,  Pages 918-925, 2010.

7. Narendra Singh and Aloka Sinha, “Digital image watermarking using gyrator transform and chaotic  maps”, Optik - International Journal for Light and Electron Optics,  Vol.  121,  Pages 1427-1437, 2010.

8. Narendra Singh and Aloka Sinha, “Chaos based secure communication scheme for encryption using voltage controlled oscillator and logistic map”, Article communicated.

International/National Conferences

    1.  Narendra Singh and Aloka Sinha, “Optical image encryption using extended fractional Fourier  transform”, Eighth International Conference on Optoelectronics, Fiber Optics and Photonics-2006, Hyderabad, QISP-17,  December 2006, p. 527.

2.  Narendra Singh and Aloka Sinha, “optical image encryption using extended fractional Fourier transform and Kaplan-Yorke map”, XXXII OSI symposium 2007, Vadodara, March 2007.

    3.   Narendra Singh and Aloka Sinha, “Digital image watermarking using chaotic dynamics”, Proceeding of the XXXIII optical society of India (OSI) symposium 2007, Tezpur, 2007,p. 158-161.

    4.   Narendra Singh and Aloka Sinha, “Optical image encryption using random gyrator transform and chaotic dynamics ”,Nineteenth International Conference on Optoelectronics, Fiber Optics and Photonics-2008, New Delhi, 2008,p.27.

5. Narendra Singh and Monika Goyal, "Eco friendly image encryption technique", Environment and Social Development Association (ESDA), National Seminar on environmental challenges of india, Dec 28,

2017, Delhi.

6. Narendra Singh and Monika Goyal,"Sustainable optical encryption technique", IQAC, International conference, Shyam Lal College (University of Delhi), March 6,2018, Delhi

7. Monika Goyal and Narendra Singh "To compute the bending loss in optical fiber using different Types    of bending" National Conference on 'Advanced Materials : Theory &Applications 2019' Dept. of Physics and Electronics, Hans Raj College, Delhi University. September 26-28, 2019, Delhi.

Attending Conference/Workshop/Seminar

 1.  Narendra Singh and Aloka Sinha, “Optical image encryption using extended fractional Fourier  transform”, Eighth International Conference on Optoelectronics, Fiber Optics and Photonics-2006, Hyderabad, QISP-17,  December 2006, p. 527.

2.  Narendra Singh and Aloka Sinha, “optical image encryption using extended fractional Fourier transform and Kaplan-Yorke map”, XXXII OSI symposium 2007, Vadodara, March 2007.

    3.   Narendra Singh and Aloka Sinha, “Digital image watermarking using chaotic dynamics”, Proceeding of the XXXIII optical society of India (OSI) symposium 2007, Tezpur, 2007,p. 158-161.

    4.   Narendra Singh and Aloka Sinha, “Optical image encryption using random gyrator transform and chaotic dynamics ”,Nineteenth International Conference on Optoelectronics, Fiber Optics and Photonics-2008, New Delhi, 2008,p.27.

DESSERATATIONS

1. National workshop on "Nano technology: Emerging Frontier and Applications" Dept. of Physics, Shyam Lal College,January 31,2017, Delhi

2. International Winter School, IQAC, Shyam Lal College (University of Delhi), March 7,2018, Delhi.

3. Three day workshop on Cyber Secuiry, National workshop, National institutional ranking framework (NIFR), Dept. Of Electronics, Deen Dayal Upadayaya College (University of Delhi), April15,2018, Delhi.

4. Faculty Development Program (FDP), Advancement in integrated sci. learning and adoptation for effective teaching and research, Dept ofPhysics and Chemistry, Shyam Lal College (University of Delhi) Dec. 10-16, 2018, Delhi