M.Sc. Ph.D

Opto-electronics, optical parallel computing, and information processing.

More than twenty Years

1. Coordinator Netaji Open University Study Centre (2010-2015)
2. Bursar (2010-2015)
3. Head of the Department (2010-2015) (2020- 2024)

2005-2017 Assistant Professor
20017- Till-date Associate Professor

P.G. Convener

Member of PG Board of Studies, Department of Physics, University of Calcutta
Member of Departmental Research Committee, Department of Physics, University of Calcutta
Life member of the Optical Society of India.

1. An all-optical scheme for data subtraction with optical Non-Linear Material. National conference on lasers and their applications 28-30th January, 2004, Department of Physics, Amravati University, Amravati.
2. Computer Assisted Edge Detection through Simple Logic Operations, International Conference on Radiation Physics and its Applications
16-17 January, 2010, Department of physics, the university of Burdwan,
Burdwan
3. A new scheme for coding of decimal number to binary number with proper use off optical nonlinear material. UGC Sponsored. National Seminar on lasers and their applications Photonics and Nano Sciences 20-21st Dec 2011, Department of Physics, Garhbeta College
4. A new scheme for decoding of binary number to decimal number by optical decoder. Recent trends in Optoelectronics 3rd Feb. 2012, Department of physics, Sripat Singh College, Jiaganj, Murshidabad
5. It is 2013: Still the optical computer lies beyond our reach, UGC Sponsored State Level Seminar on Quantum Mechanics: Theoretical Concepts and Applications 22-23rd Nov. 2013, Department of physics, Dumkal College, Dumkal, Murshidabad.
6. All-optical binary to Gray code converter and Gray code to binary converter with proper use of nonlinear material, International Conference on Optics and Photonics. 20-22 Feb. 2015, Department of Applied Optics and Photonics, University of Calcutta, India
7. Ever growing concern about the fatal consequences of groundwater, International Seminar on Groundwater: Issues and Challenges of the. 21st century 29-30 th Dec, 2014, Sripat Singh College, Jiaganj, Murshidabad
8. All-optical binary to Excess 3 code converter with proper use of Non-linear material, XL Conference of the Optical Society of India 26-28 Nov,2016, Tezpur University, Assam, India.

1 S Mukhopadhyay, N Pahari, AK Das, PP Das , Intensity based all optical parallel logic operations using non linear material, Vidyasagar University Journal of Physical Sciences, Volume 8 2002 -2003, P 24 - 30
2. N Pahari, S Mukhopadhyay , “An all optical scheme for digital subtraction with optical nonlinear material-based switch”, Vidyasagar University Journal of Physical Sciences, Volume 9, 2003 -2004, P 24- 30
3. N Pahari, DN Das, S Mukhopadhyay, “Alloptical method for the addition of binary data by nonlinear materials”, Applied Optics Vol. 43, Issue 33, pp. 6147 - 6150 (2004),
4. N Pahari, S Mukhopadhyay, “An All-Optical R S Flip Flop by Optical Non Linear Material”, Journal of Optics volume 34, pages108 to 114 (2005)
5. N Pahari, S Mukhopadhyay, “New method of all optical data comparison with nonlinear material using 1 s complement method”, Optical Engineering 45(1), 015201 (1 January 2006).
6. N Pahari, S Mukhopadhyay, “New scheme for image edge detection using the switching mechanism of nonlinear optical material”, Optical Engineering 45(3), 037003 (1 March 2006).
7. N Pahari, A Guchhait, “All optical Serial Data Transfer between Registers using optical non linear materials”, Optik Volume 123, Issue 5, March 2012, Pages 462-466
8. N Pahari, A Guchhait, AD Jana, “Image edge detection scheme by the use of Kerr type nonlinear material and the verification of the scheme by computer simulation”, Journal of Optics volume 41, pages178–183 (2012)
9. A Chakravorty, I Saha, N Pahari, D Jana, “Ever-Growing Concerns about the Fatal Consequences of Groundwater Plunder”, International Journal of Ecosystem 2015, 5(3A): 13-17
10. N Pahari “All optical even and odd parity bit generator and checker with optical nonlinear material”, Journal of Optics volume 46, pages336–341 (2017)
11. N Pahari “All-optical BCD to excess 3 code encoder with proper use of optical non-linear material”, Journal of Optics volume 47, pages 110–114 (2018).
12. A Guchhait , N Pahari, NB Manik “All-optical decimal to ternary converter with the proper use of optical non-linear material”, Journal of Optics volume 49, pages 59–68 (2020).
13. A Guchhait, N Pahari, NB Manik , “Optical Kerr nonlinear material for calculating the coefficient of binomial expansion under any positive integral” index Journal of Optics, 51(4), 851-865, 2022
14. A Guchhait, N Pahari, N Manik ,”Optical Kerr nonlinear material for expressing the trigonometric ratios of compound angles”, Journal of Optics, 1- 14, 2023
15. S K Das, N Pahari “A new scheme of 2:1 photonic multiplexer and multiplexer-based NOT, OR, AND logic gates in electro-optic Mach–Zehnder interferometer”, e-Prime - Advances in Electrical Engineering, Electronics and Energy, Volume 6, December 2023, 100375
16. S K Das, N Pahari, “Binary to Hexadecimal Decoder sing Pockels, effect guided Mach-Zender Interferometer (MZI) and Optical Tree Architecture”, Brazilian Journal of Physics, 54(1),26,2024.
17. SK Das, N Pahari, “Implementation of universal logic gates using 2: 1 photonic multiplexer (MUX) of electro-optic Mach–Zehnder interferometer” - Journal of Optics, 1-21, 2024
18. S K Das, N Pahari, “A new scheme of all-optical 2: 1 Multiplexer (MUX) and MUX-based combinational circuits using nonlinear Kerr-type materials”
Engineering Research Express, 2024