电子科技大学学报2011，Vol.40Issue(5)：703-705,736,4.DOI:10.3969/j.issn.1001-0548.2011.05.013
超长距离光纤布拉格光栅传感系统
Ultra-Long Distance Fiber Bragg Grating Sensor System
摘要
Abstract
A novel tunable fiber ring laser configuration with a combination of Raman amplification and erbium-doped fiber amplification (EDFA) is proposed for realizing high signal-to-noise ratio (SNR), ultra-long distance (300 km) fiber Bragg grating (FBG) sensor systems. The hybrid Raman-EDF amplification configuration can enhance the optical SNR of FBG sensor signals significantly, so the optical power reflected by the fiber Bragg grating can be compensated. A good optical SNR of 15 dB is achieved for a 275 km transmission distance, which is the best performance to our knowledge, and about 4 dB at 300 km. In the static strain experiments with fiber lengths of 100,200,250,300 km, the linearity is greater than 0.999. This system can be widely used in the ultra-long-distance sensing applications such as railways, oil(gas) pipelines and coastline.关键词
掺铒光纤放大器/光纤布拉格光栅/拉曼放大/超长距离传感系统Key words
EDFA/ FBG/ Raman amplification/ ultra-long distance sensor system分类
信息技术与安全科学引用本文复制引用
饶云江,封莎,冉曾令,蒋祺..超长距离光纤布拉格光栅传感系统[J].电子科技大学学报,2011,40(5):703-705,736,4.基金项目
国家863项目(2007AA01Z245) （2007AA01Z245）
教育部博士点基金(A0901010120060614017) （A0901010120060614017）
