Ultrahigh resolution optical spectrometry based on Brillouin dynamic grating

Yongkang Dong; Taofei Jiang; Lei Teng; Hongying Zhang; Liang Chen; Xiaoyi Bao; Zhiwei Lu

doi:10.1117/12.2059406

2 June 2014 Ultrahigh resolution optical spectrometry based on Brillouin dynamic grating

Yongkang Dong, Taofei Jiang, Lei Teng, Hongying Zhang, Liang Chen, Xiaoyi Bao, Zhiwei Lu

Proceedings Volume 9157, 23rd International Conference on Optical Fibre Sensors; 91572U (2014) https://doi.org/10.1117/12.2059406
Event: OFS2014 23rd International Conference on Optical Fiber Sensors, 2014, Santander, Spain

Abstract

We demonstrate an ultrahigh resolution optical spectrometry based on Brillouin dynamic grating (BDG). Taking advantage of creating a long grating in an optical fiber, an ultra-narrow bandwidth optical filter is realized by operating a BDG in a long single-mode fiber (SMF), and the optical spectrometry is performed by sweeping the center wavelength of the filter through swept-tuned laser. In experiment, a 4-fm (0.5 MHz) spectral resolution is achieved by operating a BDG in a 400-m SMF, and the wavelength coverage can be readily extended to C+L band with a commercial tunable laser.

Citation Download Citation

Yongkang Dong, Taofei Jiang, Lei Teng, Hongying Zhang, Liang Chen, Xiaoyi Bao, and Zhiwei Lu "Ultrahigh resolution optical spectrometry based on Brillouin dynamic grating", Proc. SPIE 9157, 23rd International Conference on Optical Fibre Sensors, 91572U (2 June 2014); https://doi.org/10.1117/12.2059406

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