Narrow-linewidth laser source with precision frequency tunability for distributed optical sensing applications

Fang Wei; Bin Lu; Yulong Cao; Zhengqing Pan; Dijun Chen; Qing Ye; Haiwen Cai; Ronghui Qu; Hao Zhao

doi:10.1117/12.2194489

28 September 2015 Narrow-linewidth laser source with precision frequency tunability for distributed optical sensing applications

Fang Wei, Bin Lu, Yulong Cao, Zhengqing Pan, Dijun Chen, Qing Ye, Haiwen Cai, Ronghui Qu, Hao Zhao

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Proceedings Volume 9634, 24th International Conference on Optical Fibre Sensors; 96346V (2015) https://doi.org/10.1117/12.2194489
Event: International Conference on Optical Fibre Sensors (OFS24), 2015, Curitiba, Brazil

Abstract

We demonstrate a narrow-linewidth laser source for high spatial resolution distributed optical sensing by utilizing the high-order modulation sidebands injection locking. A pair of phase-locked lasers with arbitrary frequency offset from 5 GHz to 50 GHz is generated. Meanwhile, a linearized frequency sweep covering range of 15 GHz in 6 ms with frequency errors of 240 kHz from linearity is also achieved using the same scheme, the instantaneous linewidth of the frequency-swept laser is measured to be ~2.5 kHz.

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Fang Wei, Fang Wei, Bin Lu, Bin Lu, Yulong Cao, Yulong Cao, Zhengqing Pan, Zhengqing Pan, Dijun Chen, Dijun Chen, Qing Ye, Qing Ye, Haiwen Cai, Haiwen Cai, Ronghui Qu, Ronghui Qu, Hao Zhao, Hao Zhao, } "Narrow-linewidth laser source with precision frequency tunability for distributed optical sensing applications", Proc. SPIE 9634, 24th International Conference on Optical Fibre Sensors, 96346V (28 September 2015); doi: 10.1117/12.2194489; https://doi.org/10.1117/12.2194489

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