Acta Optica Sinica, Volume. 36, Issue 9, 923001(2016)
Research on Miniaturization of Hollow Waveguide for Spectrum Absorptive Gas Sensing System
Because of the flexibility of hollow waveguide, the waveguide with several meters long can be bent inside a round box with a radius of only several centimeters. By using light source and detector, the miniaturized gas sensing system with long optical path, small gas volume and fast response can be obtained. A curved waveguide transmission model based on geometrical optics theory is established. The transmission and sensing characteristics of bent hollow waveguide are investigated by simulation and experiment. The methods to reduce system detection limit and improve sensitivity by optimizing such parameters like the waveguide length, bending radius, system signal to noise ratio, waveguide aperture and light source divergence angle are summarized.
Get Citation
Copy Citation Text
Wei Yuqing, Wei Jingyi, Zhu Xiaosong, Shi Yiwei. Research on Miniaturization of Hollow Waveguide for Spectrum Absorptive Gas Sensing System[J]. Acta Optica Sinica, 2016, 36(9): 923001
Category: Optical Devices
Received: Apr. 18, 2016
Accepted: --
Published Online: Sep. 9, 2016
The Author Email: Yuqing Wei (132107202105@fudan.edu.cn)