23 November 2011 Coherence-collapse characteristics of single-mode DFB fiber laser sensors with external optical feedback
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Proceedings Volume 8199, 2011 International Conference on Optical Instruments and Technology: Optical Sensors and Applications; 819905 (2011); doi: 10.1117/12.904763
Event: International Conference on Optical Instruments and Technology (OIT2011), 2011, Beijing, Beijing, China
Abstract
On the basis of the complex cavity model, the feedback-induced instabilities which may cause coherence collapse in single-mode distributed feedback (DFB) fiber laser sensors are analyzed. We measure the longitudinal operating mode and the frequency shift of DFB fiber laser due to Rayleigh backscattering, and obtain quantitative agreement between simulation and experiments in long-time investigations. All these study can provide references to design a novel form of DFB fiber laser sensor system utilizing external optical feedback, and the feasibility of the sensor has been proved.
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Wen Liu, Lina Ma, Huayong Yang, "Coherence-collapse characteristics of single-mode DFB fiber laser sensors with external optical feedback", Proc. SPIE 8199, 2011 International Conference on Optical Instruments and Technology: Optical Sensors and Applications, 819905 (23 November 2011); doi: 10.1117/12.904763; https://doi.org/10.1117/12.904763
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KEYWORDS
Fiber lasers

Sensors

Backscatter

Laser resonators

Interferometers

Phase shifts

Fabry–Perot interferometers

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