Gas cell based on cascaded GRIN lens for optical fiber gas sensor

Jiming Sa; Youping Chen; Gang Zhang; Zude Zhou; Lujun Cui

doi:10.1117/12.783642

27 November 2007 Gas cell based on cascaded GRIN lens for optical fiber gas sensor

Jiming Sa, Youping Chen, Gang Zhang, Zude Zhou, Lujun Cui

Proceedings Volume 6723, 3rd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment; 67234I (2007) https://doi.org/10.1117/12.783642
Event: 3rd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes, 2007, Chengdu, China

Abstract

Based on the theory of gas molecular absorption spectrum, a transmission type gas cell based on cascaded GRIN lens has been designed. The gas cell is the kernel of the optical fiber gas sensor system. The system performance is relative to rationality of gas cell structure. By using GRIN lens couple in gas cell, we can solve the problems of optical discrete components. We use GRIN lens with pigtail fiber as collimating or focusing lens for transmission type of gas cell. To shorten sensor's size and length, and enhance sensor's sensitivity, we present a method by using cascaded GRIN Lens couples to compose a gas cell. With this method, the optical path length is increased and the detection sensitivity of the gas cell is greatly increased. This transmission type of gas cell based on cascaded GRIN lens couples have been applied to our system of absorption spectrum optical fiber gas sensors. We designed and manufactured a gas cell with cascaded GRIN lens couples. Experimental results show that transmission gas cell based on cascaded GRIN lens couples has a good detecting effect.

Citation Download Citation

Jiming Sa, Youping Chen, Gang Zhang, Zude Zhou, and Lujun Cui "Gas cell based on cascaded GRIN lens for optical fiber gas sensor", Proc. SPIE 6723, 3rd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, 67234I (27 November 2007); https://doi.org/10.1117/12.783642

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