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Research on VCSEL interference analysis and elimination method

Kong, L., Jin, G., Meng, H. , Dong, Y., Wang, J., Liu, T., Sun, T. ORCID: 0000-0003-3861-8933 & Grattan, K. T. V. ORCID: 0000-0003-2250-3832 (2019). Research on VCSEL interference analysis and elimination method. Proceedings of SPIE - The International Society for Optical Engineering, 11340, article number 113401W. doi: 10.1117/12.2548147


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.

Publication Type: Article
Additional Information: Copyright SPIE (2019) Society of Photo‑Optical Instrumentation Engineers (SPIE). One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this publication for a fee or for commercial purposes, and modification of the contents of the publication are prohibited.
Publisher Keywords: VCSEL, laser diode, gas detection, ripple, interference
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering
Departments: School of Science & Technology > Engineering
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