Research on VCSEL interference analysis and elimination method

Lingyu Kong; Guangxian Jin; Hui Meng; Yuanyuan Dong; Jingyu Wang; Tongyu Liu; Tong Sun; Kenneth T. V. Grattan

doi:10.1117/12.2548147

18 December 2019 Research on VCSEL interference analysis and elimination method

Lingyu Kong, Guangxian Jin, Hui Meng, Yuanyuan Dong, Jingyu Wang, Tongyu Liu, Tong Sun, Kenneth T. V. Grattan

Proceedings Volume 11340, AOPC 2019: Optical Fiber Sensors and Communication; 113401W (2019) https://doi.org/10.1117/12.2548147
Event: Applied Optics and Photonics China (AOPC2019), 2019, Beijing, China

Abstract

Laser methane gas sensors have been increasingly accepted in coal mine safety monitoring. Most laser spectroscopic methane gas sensors are based in BFB lasers at around 1650nm. However, they suffer from high power consumption and high cost due to temperature control is required for laser diode operation at constant temperature. VCSEL lasers have offered low operation current and low power consumption when operating at non-TEC mode. However, it is found that the interference noise is critical for laser methane detection. This paper report typical results of the laser diode ripple characterization method and methods of noise reduction methods are discussed.

Citation Download Citation

Lingyu Kong, Guangxian Jin, Hui Meng, Yuanyuan Dong, Jingyu Wang, Tongyu Liu, Tong Sun, and Kenneth T. V. Grattan "Research on VCSEL interference analysis and elimination method", Proc. SPIE 11340, AOPC 2019: Optical Fiber Sensors and Communication, 113401W (18 December 2019); https://doi.org/10.1117/12.2548147

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