25 October 2016 Theoretical investigation on the effect of ASE noise for amplified fiber loop ring-down gas sensing
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Proceedings Volume 10158, Optical Communication, Optical Fiber Sensors, and Optical Memories for Big Data Storage; 101580A (2016) https://doi.org/10.1117/12.2244593
Event: International Symposium on Optoelectronic Technology and Application 2016, 2016, Beijing, China
Abstract
The effect of spontaneous emission (ASE) noise produced by the erbium-doped fiber amplifier (EDFA) on the performance of amplified fiber loop ring-down gas sensing systems is theoretically investigated. The results show that the EDFA placed after the gas cell with a smaller ASE noise can improve the measurement accuracy. The more narrower the noise equivalent optical bandwidth of the optical band pass filter following the EDFA is, the up shift of baseline of ring-down signal can be more effectively suppressed and thus improving the measurement accuracy. It is also found the longer ring-down time can be obtained by reducing the input power due to the smaller gain fluctuations of the EDFA.
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Chunfu Cheng, Chunfu Cheng, Yan Zeng, Yan Zeng, Yiwen Ou, Yiwen Ou, Jinye Zhang, Jinye Zhang, Qinghua Lv, Qinghua Lv, Jinrong Zhu, Jinrong Zhu, Hui Lv, Hui Lv, } "Theoretical investigation on the effect of ASE noise for amplified fiber loop ring-down gas sensing", Proc. SPIE 10158, Optical Communication, Optical Fiber Sensors, and Optical Memories for Big Data Storage, 101580A (25 October 2016); doi: 10.1117/12.2244593; https://doi.org/10.1117/12.2244593
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