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    Home     फाइबर ऑप्टि      Dr.Somnath Bandyopadhyay
 Fiber Optics and Photonics 
     
 
Dr. Somnath Bandyopadhyay
Scientist

Fiber Optics Laboratory
Fiber Optics and Photonics Division

Phone: (033) 24838083
FAX: +91-33-24730957
E-mail: somnath@cgcri.res.in

B.Sc. Honours (Physics), University of Calcutta
M.Sc. Tech. (Applied Physics), University of Calcutta
Ph.D. (Tech), University of Calcutta



Dr. Bandyopadhyay joined CGCRI in May 2002

Research Interest
  • Fiber Bragg grating (FBG) sensors for structural health monitoring of aerospace and civil engineering structures; FBG based ultrasonic sensing for damage detection in structure; Overlaid long period gratings for biological and chemical sensors; FBG for ultra high temperature (~10000C) application. Grating based fiber optic cavity ring-down spectroscopy for sensing application.

Professional Career
OrganisationDesignationsDuration
Central Scientific Instruments Organisation Scientist 1998-2002
Central Glass & Ceramic research Institute Scientist 2002-till date

Awards/Recognition
  • Awarded Monbusho fellowship of JSPS (1998).

  • Awarded C. V. Raman research fellowship of CSIR (2007).


Selected Publications
Summary: In SCI journals: 15, Conference proceedings: 16, Books/Monographs: 1;
Selected Publications:
  1. "Investigation on packages of fiber Bragg grating for use as embeddable strain sensor in concrete structure", P. Biswas, S. Bandyopadhyay, K. Kesavan, S. Parivallal, B. Arun Sundaram, K. Ravisankar, K. Dasgupta, Sensors and Actuators A 157, 77-83, (2010)
  2. "Empirical relations for design of linear edge filters using apodized linearly chirped fibre Bragg grating," S. Bandyopadhyay, P. Biswas, A. Pal, S. K. Bhadra and K. Dasgupta, IEEE J. of Lightwave Technology, Vol. 26, No. 24, December 15, 2008
  3. "Ultra high temperature regenerated gratings in boron- codoped germanosilicate optical fiber using 193 nm," S. Bandyopadhyay, J. Canning, M. Stevenson, K. Cook, Optics Letters, Vol. 33, No. 16, p: 1917-19, August 15, 2008.
  4. "Study of gain flatness for multi-channel amplification in single stage EDFA for WDM applications," M.Pal, S, Bandyopadhyay, P. Biswas, R. Debroy, M. C. Paul, R. Sen, K. Dasgupta, S. K. Bhadra, Optical & Quantum Electronics, Springer, DOI 10.1007/s11082-008-9193, 2008.
  5. "Extreme Silica Optical Fibre Gratings," John Canning, Michael Stevenson, Somnath Bandyopadhyay and Kevin Cook, Sensors, 8, p: 6448-6452; DOI: 10.3390/s8106448, 2008

Patents filed / Granted
International-2, Indian-1
  1. "A New Multi-Fibre Optic 2D-Array Device for Sensing and Localising Environment Perturbation using Speckle Image Processing", H K Sardana, J K Chhabra, S. Bandyopadhyay and P K Goel, US Patent 6,590,194 B2 dated 8.7.2003
  2. "A device for on-line monitoring of temperature of overhead high voltage power conductors with fibre-optic (fibre Bragg-grating based) sensors", Leif Bjerkan, Tarun Kumar Gangopadhyay, Kamal Dasgupta, Somnath Bandyopadhyay, Palas Biswas, Shyamal Bhadra, and H S Maiti, Norwegian Patent Appln. No. 20091450/ dt.15.04.2009
  3. "A device for on-line monitoring of temperature of overhead high voltage power conductors with fibre-optic (fibre Bragg-grating based) sensors", Leif Bjerkan, Tarun Kumar Gangopadhyay, Kamal Dasgupta, Somnath Bandyopadhyay, Palas Biswas, Shyamal Kumar Bhadra, and Himadri Shekar Maiti, NFNo. 0135NF2009/IN, Filing date: 31/08/2009, Indian Patent Appln. No. 0891DEL2010.

Notable Research Contribution
  • Regenerated fiber gratings with ultra high temperature stability
  • Fiber grating based linear filters
  • Gain flattening filters for optical amplifiers
  • Fibre Bragg Grating (FBG) based temperature sensor for high voltage (400KV) power transmission lines.


    Updated on: 30-05-2010 15:01 
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