A nonlinear tuning compensation method based on homomorphic deconvolution for OFDR systems

Jianfei Liu; Ruiming Qi; Mingming Luo; Xiangye Zeng; Xujun Fan; Wenrong Yang

doi:10.1117/12.2543279

12 March 2020 A nonlinear tuning compensation method based on homomorphic deconvolution for OFDR systems

Jianfei Liu, Ruiming Qi, Mingming Luo, Xiangye Zeng, Xujun Fan, Wenrong Yang

Proceedings Volume 11435, 2019 International Conference on Optical Instruments and Technology: Optical Communication and Optical Signal Processing; 1143507 (2020) https://doi.org/10.1117/12.2543279
Event: 2019 International Conference on Optical Instruments and Technology, 2019, Beijing, China

Abstract

In this paper, an algorithm based on homomorphic deconvolution is proposed to give an accurate estimation of nonlinear phase in the beat signal in optical frequency domain reflectometry (OFDR). Nonlinearities in the beat signal are obtained by using an auxiliary interferometer. After converting to cepstrum domain and filtering, the nonlinearity can be separated from the beat signal. Then, the deskew filter is used to eliminate the nonlinearity. In the proposed algorithm, no approximations are used, so the estimation is theoretically unbiased. Certain simulations are performed to verify the versatility and effectiveness of the proposed algorithm. The nonlinearities are accurately estimated and eliminated by the method, which improves the spatial resolution of the OFDR system.

Citation Download Citation

Jianfei Liu, Ruiming Qi, Mingming Luo, Xiangye Zeng, Xujun Fan, and Wenrong Yang "A nonlinear tuning compensation method based on homomorphic deconvolution for OFDR systems", Proc. SPIE 11435, 2019 International Conference on Optical Instruments and Technology: Optical Communication and Optical Signal Processing, 1143507 (12 March 2020); https://doi.org/10.1117/12.2543279

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