A probe-type fiber optic ultraviolet photodetector

Yue Qin; Dingbang Ma; Ying Wang; Changrui Liao; Yiping Wang

doi:10.1117/12.2681883

23 May 2023 A probe-type fiber optic ultraviolet photodetector

Yue Qin, Dingbang Ma, Ying Wang, Changrui Liao, Yiping Wang

Proceedings Volume 12643, European Workshop on Optical Fibre Sensors (EWOFS 2023); 126430Q (2023) https://doi.org/10.1117/12.2681883
Event: European Workshop on Optical Fibre Sensors (EWOFS 2023), 2023, Mons, Belgium

Abstract

A probe-type all-fiber ultraviolet photodetector is proposed in this paper. A ZnO microwire is fixed on the end facet of a single-mode fiber through a glass tube with specific diameter to form a Fabry-Pérot interferometer. With this all-fiber structure, fast-response ultraviolet detection can be realized in an all-optical scheme. Since the refractive index of ZnO microwire increases under the illumination of ultraviolet, interference wavelengths of abovementioned device redshifts with the increase of ultraviolet light intensity. By employing a continuous 266-nm laser beam and chopping method, the sensitivity is obtained to be 0.268 nm/(W·cm^-2 ) and the response time is only 0.56 ms. To be more specifically, the response speed of the device is further explored by a 266-nm pulsed laser, and the response time of the device is measured to be only 13 μs. The proposed device provides a new idea for the next generation of high-performance ultraviolet photodetectors and may find potential applications in the future.

Citation Download Citation

Yue Qin, Dingbang Ma, Ying Wang, Changrui Liao, and Yiping Wang "A probe-type fiber optic ultraviolet photodetector", Proc. SPIE 12643, European Workshop on Optical Fibre Sensors (EWOFS 2023), 126430Q (23 May 2023); https://doi.org/10.1117/12.2681883

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