Photonic circuit design of adaptive two-wave mixing photorefractive interferometer

Zhengquan Qian; Chuanyi Tao; Jingke Li; Fuxiang Peng; Tao Guo; Cheng Feng; Jianjun Xiao; Ping Su

doi:10.1117/12.3006026

18 December 2023 Photonic circuit design of adaptive two-wave mixing photorefractive interferometer

Zhengquan Qian, Chuanyi Tao, Jingke Li, Fuxiang Peng, Tao Guo, Cheng Feng, Jianjun Xiao, Ping Su

Proceedings Volume 12959, AOPC 2023: Laser Technology and Applications; and Optoelectronic Devices and Integration; 129591O (2023) https://doi.org/10.1117/12.3006026
Event: Applied Optics and Photonics China 2023 (AOPC2023), 2023, Beijing, China

Abstract

Two-wave mixing interferometry based on photorefractive crystals stands out among many techniques for monitoring dynamic strain because it can provide multiple dynamic sensing and does not require electronic feedback to actively compensate for any quasi-static drift. However, the traditional optical signal sensing processing system has shortcomings such as large, occupied space, various types of optical components, and complex optical path structure, which is not conducive to practical applications. Thanks to the development of photonic integrated circuits, photonic integrated can effectively solve these shortcomings. In this paper, based on the experimental study of two-wave mixing interferometry in InP:Fe spatial optics configuration, a photonic integrated two-wave mixing photorefractive interferometer is designed, which consists of curved waveguide, directional couple, unbalanced Mach-Zehnder interferometer structure, crossed waveguide, electrodes, etc. To minimize the loss of light in transmission and achieve the best demodulation performance for a two-wave mixing photorefractive interferometer, each structure is optimized by finite element method simulations. The feasibility of the optimized structure is verified in theory and the demodulation curve of transmitted signal light varying with time is obtained.

(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Zhengquan Qian, Chuanyi Tao, Jingke Li, Fuxiang Peng, Tao Guo, Cheng Feng, Jianjun Xiao, and Ping Su "Photonic circuit design of adaptive two-wave mixing photorefractive interferometer", Proc. SPIE 12959, AOPC 2023: Laser Technology and Applications; and Optoelectronic Devices and Integration, 129591O (18 December 2023); https://doi.org/10.1117/12.3006026

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KEYWORDS

Waveguides

Mach Zehnder interferometers

Demodulation

Fiber Bragg gratings

Optical path differences

Electric fields

Two wave mixing

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