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Fiber Optics and Photonics
Profile of Ranjan Sen
Dr. Ranjan Sen
Chief Scientist and Head
Fiber Optics & Photonics Division
Phone: : (033) 2322 3279
(Chemical Engg.), Jadavpur University, Kolkata
(Chemical Engg.) Jadavpur University, Kolkata
(Chemical Engg.) Jadavpur University, Kolkata
Dr. Sen joined CSIR-CGCRI in in May, 1983
Dr. Ranjan Sen is holding the position of Chief Scientist and Head, Glass Division at CSIR-Central Glass & Ceramic Research Institute, Kolkata. As head of the group, he is leading a number of major programmes on technology development of specialty glasses such as high density glass for radiation protection, Nd-doped laser glass, and glass beads for nuclear waste immobilization etc. He is also active in the area of energy-efficient process of glass melting.
He is Head, Fiber Optics & Photonics Division (FOPD) too: a Division he has been closely associated with for the last 30 years. At FOPD he is leading a number of national and international sponsored projects in the field of specialty optical fibers.
Currently, Dr Sen’s prime research interest is in the field of high power fiber lasers for industrial/medical applications, specialty fibers for adverse environments and specialty glasses for laser application. He is working in close unison with Industries, user organizations and reputed Institutions, both in India and abroad, for development of technology/ products in the above fields.
Continuing as a Research Scientist since 1983 in Fiber Optics & Photonics Division
Took over as Head of the Glass Division, since 2009.
Worked as a Guest Scientist in Technical University, Braunschweig, Germany during 2004 - 2005
DAAD Fellowship in 1990-91
Deokaran Award of Indian Ceramic Society in 1991
Best paper award in OECC 2003 Conference in China
Invitation from TU Braunschweig, Germany to join as a guest Scientist during 2004-05
Royal society award project in 2008 with City University, London
CSIR-India technology award in 2012
UKIERI grant in 2013
NRDC-India Innovation Award for the year 2013
Summary: Publications: More than 130;
“Sensors for Harsh Environment: Radiation Resistant FBG Sensor System” A. Pal, A. Dhar, A. Ghosh, R. Sen, B. Hooda, V. Rastogi, M. Ams, M. Fabian, T. Sun and K. T. V. Grattan, Special issue on Journal of Lightwave Technology, DOI: 10.1109/JLT.2016.2598666 (2017).
“Synthesis and characterization of transparent erbium-ytterbium co-doped polymer nanocomposites for fabrication of polymer optical preform”, Ipsita Chinya, R. Sen and Anirban Dhar, Physics Status Solidi A, DOI 10.1002/pssa.201600685, 2017.
“Design of all-fiber Thulium laser in CW and QCW mode of operation for medical use” D. Pal, R. Sen and A. Pal, in Physica Status Solidi C, 2016 DOI: 10.1002/pssc.201600127
“All fiber tunable ring laser source near 2µm designed for CO2 sensing”, A. Ghosh, A. Sinha Roy, S. D. Chowdhury, R. Sen and A. Pal, in Sensors and Actuators B, Chemical 235, 547-553, (2016).
“CW and QCW Thulium-doped all-fiber laser: implementation on kidney stone fragmentation”, D. Pal, A. Ghosh, R. Sen and A. Pal, in Applied Optics, 55(23), 6151-6155 (2016).
“High Power Fiber Lasers- Fundamentals to Applications”, R. Sen, Maitreyee Saha, Sourav D. Chowdhury, Nishant K. Shekhar, Debasis Pal, Aditi Ghosh, Anirban Dhar, Atasi Pal and Mrinmay Pal. Science and Culture, Vol. 81, No. 11-12 (Dec 2015).
“Fiber Lasers at 1 μm and 2 μm – Indigenous Technology Development by CSIR-CGCRI”, R. Sen, Mrinmay Pal, Atasi Pal, Anirban Dhar, Maitreyee Saha, Sourav D. Chowdhury, Nishant K. Shekhar and Aditi Ghosh, Kiran, Vol. 25, No. 1, pp. 21 – 35 (April 2014).
“Fiber Laser Technology – Current Status and Activities by CSIR-CGCRI,” R. Sen, Mrinmay Pal, Atasi Pal, Anirban Dhar, Maitreyee Saha, Sourav Das Chowdhury, Nishant Kumar Shekhar, Debasis Pal and Aditi Ghosh, Kiran (a bulletin of the Indian Laser Association) Vol. 25, No. 3 (Dec 2014).
“An Improved Method of Fabricating Rare Earth Doped Optical Fiber” Ranjan Sen and Anirban Dhar
Book titled ‘Selected Topics on Optical Fiber Technology’
Published by INTECH on-line publishing, February 2012.
Total Downloads by Countries till March, 2017: 3761
(Download share by top 5 countries: USA 980, China 300, India 238, Taiwan 109, UK 108)
Received special appreciation from INTECH for downloads > 3000
“Materials and Fabrication Technology of Rare Earth Doped Optical Fibers”
Mukul Chandra Paul, Anirban Dhar, Mrinmay Pal, Shyamal K. Bhadra, and Ranjan Sen.
Book titled: ‘Guided Wave Optics and Photonic devices’
Publisher: Taylor and Francis (CRC Press), Florida, USA
Patents filed / Granted
Notable Research Contribution
Establishment of a state of the art facility for manufacturing specialty fiber preforms and demonstration of the technology of making a few varieties of specialty fiber including those for optical amplifiers and fiber lasers.
Demonstration of a new route of making rare earth doped optical fiber under an Indo-Israel collaborative programme.
Development of the process know-how of making rare earth doped fluoride glass preforms and fibers of various designs.
Technology demonstration and production of two important varieties of specialty glasses.
Summary: Completed (3), Ongoing (5);
Solution doping process for fabrication of rare earth doped fibers, Fiber laser for gas sensor application, rare earth doping in preforms/fibers by vapor phase technique, Optical fiber for use in hazardous environment
Updated on: 04-04-2017 17:29
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