A method of measuring FP transmittance based on whispering gallery mode light source

Yufei Chu; Dong Liu; Decheng Wu; Zhenzhu Wang; Qian Deng; Zhiqiang Kuang; Li Lu; Zhuang Peng; Zhiyuan Fang; Chenbo Xie; Yingjian Wang

doi:10.1117/12.2548078

20 December 2019 A method of measuring FP transmittance based on whispering gallery mode light source

Yufei Chu, Dong Liu, Decheng Wu, Zhenzhu Wang, Qian Deng, Zhiqiang Kuang, Li Lu, Zhuang Peng, Zhiyuan Fang, Chenbo Xie, Yingjian Wang

Author Affiliations +

Proceedings Volume 11209, Eleventh International Conference on Information Optics and Photonics (CIOP 2019); 1120925 (2019) https://doi.org/10.1117/12.2548078
Event: Eleventh International Conference on Information Optics and Photonics (CIOP 2019), 2019, Xi'an, China

Abstract

The Fabry-Parot etalon can be widely used in the lidar for Doppler wind measurement and aerosol detection. Due to the very wide application of the FP etalon, the standard transmission curve of the F-P is a very important parameter. The general FP etalon measures the transmittance curve by tuning the wavelength of the laser source or tuning the angle of incident light. The FP etalon generally measures the transmittance curve of the etalon by tuning the wavelength of the laser source or use the frequency comb source. Moreover, the tuning of the wavelength and the angle of incident light are nonlinear, and the measurement accuracy is insufficient, and the frequency comb source is very expensive. This paper proposes a new method for testing the transmittance curve of a FP etalon using a similar frequency comb source. The whispering gallery mode is a typical similar frequency comb laser source which has multiple frequency components, but not equal intervals. The spacing of the frequency of the whispering gallery mode is not equal, but the spacing of the frequency can be determined. So, the transmittance curve of the FP etalon can be measured at one time. And the frequency interval and spectral range are tunable easily. This new method greatly reduces the cost of measuring transmission curve, improve measurement accuracy and effectiveness and has great theoretical and practical value.

Citation Download Citation

Yufei Chu, Dong Liu, Decheng Wu, Zhenzhu Wang, Qian Deng, Zhiqiang Kuang, Li Lu, Zhuang Peng, Zhiyuan Fang, Chenbo Xie, and Yingjian Wang "A method of measuring FP transmittance based on whispering gallery mode light source", Proc. SPIE 11209, Eleventh International Conference on Information Optics and Photonics (CIOP 2019), 1120925 (20 December 2019); https://doi.org/10.1117/12.2548078

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KEYWORDS

Transmittance

Fabry–Perot interferometers

Light sources

Microfluidics

Polarization

Laser sources

Wavelength tuning

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