Zobrazeno 1 - 10
of 15
pro vyhledávání: '"C. V. Sreehari"'
Autor:
S. R. Prabhakaran Nayar, T. J. Mathew, C. V. Sreehari, S. G. Sumod, C. V. Devasia, S. Ravindran, V. Sreeja, T. Kumar Pant, R. Sridharan
Publikováno v:
Annales Geophysicae, Vol 27, Pp 107-111 (2009)
The electrodynamics of the pre-sunrise equatorial F-region is investigated using HF Doppler radar and digital ionosonde. The observations are limited to those days for which the radar probing frequency is below the foF2 value. The ionosphere obser
Externí odkaz:
https://doaj.org/article/ace226b548414cafa9430b391f69bfd6
Publikováno v:
Journal of Optics.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2d1aab73498a356ab72e013643507ac6
https://doi.org/10.1007/s12596-023-01109-w
https://doi.org/10.1007/s12596-023-01109-w
Autor:
Rajendiran Rajesh, C. A. Khansa, T. V. Praveen, C. V. Sreehari, S Sham Kumar, T. Santhanakrishnan
Publikováno v:
IEEE Sensors Journal. 20:13418-13425
One of the important criteria in underwater acoustic sensing using fiber-optic sensors is to have an interrogator with wide dynamic range. Interferometric sensors with Phase Generated Carrier (PGC) based interrogators offer wide dynamic ranges compar
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::64e1cb965d4d9bae73b7612f03aaf1ba
https://doi.org/10.1109/jsen.2020.3006931
https://doi.org/10.1109/jsen.2020.3006931
Autor:
T. V. Praveen, K. P. B. Moosad, R. S. Arun Sundar, C. V. Sreehari, S Sham Kumar, T. Santhanakrishnan, K. Vivek, R. Rajesh
Publikováno v:
IEEE Sensors Journal. 18:589-595
Fiber laser hydrophones engineered either with a direct polymer coating over the laser or a coating over a mechanically enclosed laser have many practical limitations. Notably, damages can occur due to the differential strain and the complexity invol
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::97d85abd6043fdf776b0a3c252654d7a
https://doi.org/10.1109/jsen.2017.2777900
https://doi.org/10.1109/jsen.2017.2777900
Autor:
T. V. Praveen, T. Santhanakrishnan, K. Shajahan, Kumar S. Sham, K. P. B. Moosad, C. V. Sreehari, K. Vivek, R. Rajesh
Publikováno v:
Journal of Lightwave Technology. 35:4097-4104
Polymer coating of a rather large diameter on distributed feed-back fiber laser generally damages the laser due to differential strain, and hence its usefulness as an effective packaging for hydrophones was not much tested. To overcome this challenge
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c644190c185623da05f4facddd00c3aa
https://doi.org/10.1109/jlt.2017.2736059
https://doi.org/10.1109/jlt.2017.2736059
Publikováno v:
Scientific Reports
Scientific Reports, Vol 9, Iss 1, Pp 1-8 (2019)
Scientific Reports, Vol 9, Iss 1, Pp 1-8 (2019)
An optical method for simultaneous generation and detection of diffraction of light around the edges of photodetectors is reported in this paper along with its application for vibration sensing. The method makes use of an innovative illumination of l
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::de6b0b5367c62441b5af2d0d1695b820
http://europepmc.org/articles/PMC6399223
http://europepmc.org/articles/PMC6399223
Publikováno v:
2017 Third International Conference on Sensing, Signal Processing and Security (ICSSS).
Interferometric fiber optic hydrophones are projected as potential sensors for underwater security. The performance of all-fiber Michelson interferometer suitable for both fiber laser and fiber mandrel based hydrophones was analyzed in this work. Str
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8600769728e5df09fdc8bf7e603def09
https://doi.org/10.1109/ssps.2017.8071582
https://doi.org/10.1109/ssps.2017.8071582
Autor:
S Sham Kumar, R. Rajesh, T. Santhanakrishnan, K. Vivek, Shan Victor Pereira, K. P. B. Moosad, C. V. Sreehari, T. V. Praveen, R. L. Awasthi
Publikováno v:
13th International Conference on Fiber Optics and Photonics.
Underwater acoustic surveillance with fiber optic hydrophones offers electrically passive systems with minimum cablings. This in turn makes them highly desirable for sea bed arrays, towed arrays and Flank arrays. Distributed Feed-Back Fiber Laser (DF
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::70398a38e44f0f879a624a5282933c90
https://doi.org/10.1364/photonics.2016.th3a.52
https://doi.org/10.1364/photonics.2016.th3a.52
Publikováno v:
13th International Conference on Fiber Optics and Photonics.
Intrusion detection systems gains importance considering today‟s increased threats from various attacks. The ability to produce very long sensor arrays with high sensitivity such as fiber optic, which do not require much electrical power, will have
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::01d88700439406a2f60c1ecc52bb9b75
https://doi.org/10.1364/photonics.2016.tu4a.80
https://doi.org/10.1364/photonics.2016.tu4a.80
Autor:
Tiju Joseph Mathew, C. V. Sreehari, C. V. Devasia, S. G. Sumod, S. R. Prabhakaran Nayar, V. Sreeja, Sudha Ravindran, R. Sridharan, T. Kumar Pant
Publikováno v:
Annales Geophysicae, Vol 27, Iss 1, Pp 107-111 (2009)
Annales Geophysicae, Vol 27, Pp 107-111 (2009)
Annales Geophysicae, Vol 27, Pp 107-111 (2009)
The electrodynamics of the pre-sunrise equatorial F-region is investigated using HF Doppler radar and digital ionosonde. The observations are limited to those days for which the radar probing frequency is below the foF2 value. The ionosphere observat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::704e6cd2080f627a3dff9ebd204e9289
https://doi.org/10.5194/angeo-27-107-2009
https://doi.org/10.5194/angeo-27-107-2009