Optical fiber gas sensing system based on FBG filtering

摘要：

An optical fiber gas sensing system based on the law of Beer-Lambert is designed to determine the concentration of gas. This technique relies on the fact that the target gas has a unique, well-defined absorption characteristic within the infrared region of electromagnetic spectrum. The narrow-band filtering characteristic of optical fiber Bragg grating is used to produce the narrow spectrum light signal. An aspheric objective optical fiber collimator is used in the system as an optical fiber gas sensing detector to improve the sensitivity and stability. Experimental results show there is a high measuring sensitivity at 0.01％, and the measuring range goes beyond 5％.

关键词： SLED FBG gas aspheric objective optical fiber collimator optical fiber gas sensing detector narrow band filtering multiplezing technology optical fiber gas sensing network

作者: Wang shutao

作者单位: Measuring Technology & Instruments Key Lab of Hebei Province, Yanshan University, Qinhuangdao 066004, Hebei, China

会议类型: 国际会议

会议名称: 第五届仪器科学与技术国际学术会议(ISIST 2008)Fifth International Symposium on Instrmentation Science and Technology

会议地点: 沈阳

会议语种:英文

页码: 1-10

在线出版日期: 2008-09-15（万方平台首次上网日期，不代表论文的发表时间）