Design of an optical fiber-grating spectrum-dividing system for NO2-DIAL

Ben Xu; Kai Yang; Dawei Fang; Jinsong Li; Xiaoyan Li; Jie Huang

doi:10.1117/12.836573

28 August 2009 Design of an optical fiber-grating spectrum-dividing system for NO₂-DIAL

Ben Xu, Kai Yang, Dawei Fang, Jinsong Li, Xiaoyan Li, Jie Huang

Proceedings Volume 7382, International Symposium on Photoelectronic Detection and Imaging 2009: Laser Sensing and Imaging; 73824Q (2009) https://doi.org/10.1117/12.836573
Event: International Symposium on Photoelectronic Detection and Imaging 2009, 2009, Beijing, China

Abstract

Differential Absorption Lidar for detecting atmospheric NO₂ (NO₂-DIAL) is used extensively for its high precision and spatial resolution, and the measurement can be done real-time with a wide range. The design of spectrum-dividing system is a key component of lidar. According to characters of DIAL, such as adjacency of laser wavelength and weakness of received signal, a set of optic fiber-grating spectrum-dividing system is developed. The system has the advantages such as high spectral resolution, efficiently divide lidar echo signals in different wavelengths, weak attenuation, receive and process signals in two channels synchronously, etc. So the SNR of receiving system has improved.

Citation Download Citation

Ben Xu, Kai Yang, Dawei Fang, Jinsong Li, Xiaoyan Li, and Jie Huang "Design of an optical fiber-grating spectrum-dividing system for NO₂-DIAL", Proc. SPIE 7382, International Symposium on Photoelectronic Detection and Imaging 2009: Laser Sensing and Imaging, 73824Q (28 August 2009); https://doi.org/10.1117/12.836573

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