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Proceedings Paper

Wavefront sensing techniques for adaptive optics systems
Author(s): Mina Ray; Samir Kumar Sarkar; Rabindra Nath Chakraborty; Amitabha Basuray
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Paper Abstract

The design and fabrication of a fiber optic pH sensor working on the basis of evanescent wave absorption is presented. A pH sensitive dye is immobilized on the uncladded portion of the optic fiber by sol-gel route. The sensitivity of the device is found to increase when multiple sol-gel coatings are used as the cladding in the sensing region. The sensor response and its dynamic range are reported for two pH indicator dyes, vis. bromocresol purple and bromocresol green.

Paper Details

Date Published: 25 September 2001
PDF: 3 pages
Proc. SPIE 4417, Photonics 2000: International Conference on Fiber Optics and Photonics, (25 September 2001); doi: 10.1117/12.441351
Show Author Affiliations
Mina Ray, Univ. of Calcutta (India)
Samir Kumar Sarkar, Univ. of Calcutta (India)
Rabindra Nath Chakraborty, Univ. of Calcutta (India)
Amitabha Basuray, Univ. of Calcutta (India)


Published in SPIE Proceedings Vol. 4417:
Photonics 2000: International Conference on Fiber Optics and Photonics
S. K. Lahiri; Ranjan Gangopadhyay; Asit K. Datta; Samit K. Ray; B. K. Mathur; S. Das, Editor(s)

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