Photodetector with photothermal cascaded Fabry-Perot etalons

George Y. Chen; Xuan Wu; Xiaokong Liu; David G. Lancaster; Tanya M. Monro; Haolan Xu

doi:10.1117/12.2263428

23 April 2017 Photodetector with photothermal cascaded Fabry-Perot etalons

George Y. Chen, Xuan Wu, Xiaokong Liu, David G. Lancaster, Tanya M. Monro, Haolan Xu

Proceedings Volume 10323, 25th International Conference on Optical Fiber Sensors; 103230F (2017) https://doi.org/10.1117/12.2263428
Event: 25th International Conference on Optical Fiber Sensors, 2017, Jeju, Korea, Republic of

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.

Citation Download Citation

George Y. Chen, Xuan Wu, Xiaokong Liu, David G. Lancaster, Tanya M. Monro, and Haolan Xu "Photodetector with photothermal cascaded Fabry-Perot etalons", Proc. SPIE 10323, 25th International Conference on Optical Fiber Sensors, 103230F (23 April 2017); https://doi.org/10.1117/12.2263428

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