Zobrazeno 1 - 10
of 45
pro vyhledávání: '"Kamal Dasgupta"'
Autor:
Tanoy Kumar Dey, Sankhyabrata Bandyopadhyay, Kamal Dasgupta, Nandini Basumallick, Somnath Bandyopadhyay, Palas Biswas
Publikováno v:
Journal of Lightwave Technology. 34:3348-3353
We report a high sensitive refractive index (RI) sensor using fiber Bragg grating (FBG) where azimuthally symmetric resonant cladding modes were used for RI sensing. We enhanced the sensitivity by tailoring the effective index of a cladding mode to a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5963b7bc6bb8ccecee5f05e13aef97dc
https://doi.org/10.1109/jlt.2016.2563521
https://doi.org/10.1109/jlt.2016.2563521
Autor:
Palas Biswas, Nandini Basumallick, Somnath Bandyopadhyay, Sankhyabrata Bandyopadhyay, Ajay Ghosh, Kamal Dasgupta
Publikováno v:
IEEE Sensors Journal. 15:1240-1245
Long period grating (LPG) at turn-around-point (TAP) has been studied with a view to enumerate the dependence of sensitivity of a particular resonant mode at the TAP to surrounding refractive index on the initial coupling strength. It has been shown
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0d2bee9b51dba5f536c37e4594e60735
https://doi.org/10.1109/jsen.2014.2361166
https://doi.org/10.1109/jsen.2014.2361166
Autor:
M C Bobby, J. Linesh, P. Radhakrishnan, S. Mathew, T. M. Libish, Kamal Dasgupta, Palas Biswas, Somnath Bandyopadhyay
Publikováno v:
Optik. 124:4345-4348
The influence of annealing and temperature on the transmission spectrum of Long Period Grating (LPG) is investigated by monitoring the wavelength shift and the intensity variation in the loss peaks. The LPGs are inscribed in a hydrogen loaded standar
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e6eb6b7a618bdfcdbcc83a0859ef83f0
https://doi.org/10.1016/j.ijleo.2013.02.010
https://doi.org/10.1016/j.ijleo.2013.02.010
Autor:
Sumita Das, Saunab Ghosh, H. S. Chaudhary, D Bohra, S. G. Vaijapurkar, Kamal Dasgupta, Mukul Chandra Paul, Lalit Panwar, P. K. Bhatnagar
Publikováno v:
Sensor Letters. 11:1408-1414
Carbon co-doped alumino-silicate glass based step index multimode optical fibres (SIMM) embedded with SiC and Al4C3 crystals into silica glass were fabricated successfully through a combination of modified chemical vapour deposition (MCVD) process an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0c74998e8c2e5f06146a543dfb8024ce
https://doi.org/10.1166/sl.2013.2986
https://doi.org/10.1166/sl.2013.2986
Publikováno v:
Sensors and Actuators A: Physical. 194:31-39
Sensitivity of a cantilever-mass based fiber Bragg grating (FBG) accelerometer can efficiently be tailored by altering the distance between the axis of the FBG sensor to the neutral axis of the cantilever. To accomplish that in general, a backing pat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cbb6c661939509b58ac3cb30cb926e88
https://doi.org/10.1016/j.sna.2013.01.039
https://doi.org/10.1016/j.sna.2013.01.039
Publikováno v:
Sensors and Actuators A: Physical. 173:108-115
A cantilever based optical accelerometer with enhanced performance characteristics has been proposed. The sensitivity of the accelerometer has efficiently been enhanced by about twice as compared to the conventional design by tailoring the effective
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8a9f692da76761df320ee5f8a4b201ff
https://doi.org/10.1016/j.sna.2011.10.026
https://doi.org/10.1016/j.sna.2011.10.026
Autor:
T. M. Libish, M C Bobby, Somnath Bandyopadhyay, Palas Biswas, J. Linesh, Kamal Dasgupta, P. Radhakrishnan
Publikováno v:
Optik. 122:1939-1942
A fiber optic sensing system for the detection of adulteration of coconut oil by paraffin oil is experimentally demonstrated. The sensing mechanism is based on the sensitive dependence of the resonance peaks of a long period grating (LPG) on the chan
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f846fb3c772e8b60886a2e7d42e2acac
https://doi.org/10.1016/j.ijleo.2010.12.009
https://doi.org/10.1016/j.ijleo.2010.12.009
Autor:
B.N. Upadhyaya, Shyamal Kumar Bhadra, Mrinmay Pal, Ranjan Sen, S Kher, Sumita Das, Mukul Chandra Paul, Anirban Dhar, Kamal Dasgupta
Publikováno v:
Optics Communications. 283:1039-1046
Double clad large core Yb 2 O 3 doped fibres with core diameter up to 20 μm have been fabricated by the solution doping technique through deposition of multiple porous core layers. The process parameters have been optimized with respect to the unifo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::45ac876d1b45d1cacd93611bf0725f8a
https://doi.org/10.1016/j.optcom.2009.06.006
https://doi.org/10.1016/j.optcom.2009.06.006
Autor:
Somnath Bandyopadhyay, Kamal Dasgupta, B. Arun Sundaram, K. Ravisankar, S. Parivallal, Palas Biswas, K. Kesavan
Publikováno v:
Sensors and Actuators A: Physical. 157:77-83
The paper covers detailed investigation on encapsulation and packaging of fiber Bragg grating (FBG) for strain sensing of concrete structures in embeddable form. Non-uniform strain distribution due to imperfect curing of the epoxy and its effect on t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8c5a78dcf390042ccf6fcbc8515e4dd8
https://doi.org/10.1016/j.sna.2009.10.020
https://doi.org/10.1016/j.sna.2009.10.020
Publikováno v:
Journal of Non-Crystalline Solids. 355:1496-1507
This paper revealed the role of various parameters on the radiation response behavior of P 2 O 5 doped step-index multimode (SIMM) fibers having different content of P 2 O 5 (12–6 mol%) at room temperature. Their suitability for use as a radiation
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2f38709cb4e2d1801c3a84de1338c594
https://doi.org/10.1016/j.jnoncrysol.2009.05.017
https://doi.org/10.1016/j.jnoncrysol.2009.05.017