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

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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, Bin Lu, Yulong Cao, Zhengqing Pan, Dijun Chen, Qing Ye, Haiwen Cai, Ronghui Qu, and 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); https://doi.org/10.1117/12.2194489

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