AWG-based large dynamic range fiber Bragg grating interrogation system  

作　　者：LI Shufeng YUAN Pei LI Ke LI Ting ZHU Lianqing 

机构地区：[1]Key Laboratory of the Ministry of Education for Optoelectronic Measurement Technology and Instrument,Beijing Information Science&Technology University,Beijing 100192,China [2]Beijing Laboratory of Optical Fiber Sensing and System,Beijing Information Science&Technology University,Beijing 100016,China

出　　处：《Optoelectronics Letters》2024年第3期129-134,共6页光电子快报（英文版）

基　　金：supported by the National Natural Science Foundation of China(No.62205030);the R&D Program of Beijing Municipal Education Commission(No.KM202211232019)。

摘　　要：Arrayed waveguide gratings(AWGs) are extensively employed in fiber Bragg grating(FBG) interrogation systems due to their compact size, lightweight nature, and excellent interrogation performance. The resolution and total measurement range of AWG-based FBG interrogation systems are constrained by the output properties of AWG. We proposed an AWG-based large dynamic range interrogation system. The temperature dependence of AWG is exploited to achieve continuous interrogation. The test results show that the interrogation system has a dynamic range of 28.67 nm, an interrogation accuracy better than 25 pm, and a wavelength resolution of 6 pm.

关 键 词：FIBER WAVEGUIDE AWG 

分 类 号：TN253[电子电信—物理电子学]