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Proceedings Paper

Photodetector with photothermal cascaded Fabry-Perot etalons
Author(s): George Y. Chen; Xuan Wu; Xiaokong Liu; David G. Lancaster; Tanya M. Monro; Haolan Xu
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Paper Abstract

A new type of photodetector with an optical sensor is presented, which enables it to operate even in the presence of strong electro-magnetic interference. The optical sensor head consists of cascaded Fabry-Perot etalons coated with a new type of photo-thermal coating comprising of hydrogel-embedded copper-oxide micro-particles. For white-light irradiation, the photodetector exhibits a power sensitivity of 760 pm/mW, a detection limit of 16.4 μW, and an optical damage threshold of ∼100 mW or ∼800 mW/cm2. The response and recovery times are 3.0 s (∼90% of change within 100 ms) and 16.0 s.

Paper Details

Date Published: 23 April 2017
PDF: 4 pages
Proc. SPIE 10323, 25th International Conference on Optical Fiber Sensors, 103230F (23 April 2017); doi: 10.1117/12.2263428
Show Author Affiliations
George Y. Chen, Univ. of South Australia (Australia)
Xuan Wu, Univ. of South Australia (Australia)
Xiaokong Liu, Univ. of South Australia (Australia)
David G. Lancaster, Univ. of South Australia (Australia)
Tanya M. Monro, Univ. of South Australia (Australia)
Haolan Xu, Univ. of South Australia (Australia)

Published in SPIE Proceedings Vol. 10323:
25th International Conference on Optical Fiber Sensors
Youngjoo Chung; Wei Jin; Byoungho Lee; John Canning; Kentaro Nakamura; Libo Yuan, Editor(s)

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