基于腐蚀硼锗共掺光纤的自闭合光纤法-珀传感器  

Self-Enclosed Fiber-Optic Fabry-Pérot Sensor Based on Etched B-Ge Co-Doped Optical Fiber

作　　者：饶云江[1] 郭宇[1] 龚元[1] 

机构地区：[1]电子科技大学光纤传感与通信教育部重点实验室,成都611731

出　　处：《电子科技大学学报》2012年第2期227-231,共5页Journal of University of Electronic Science and Technology of China

基　　金：国家自然科学重点基金(60537040)

摘　　要：提出了采用化学腐蚀硼锗共掺光纤通过电弧放电封闭成型制作非本征型光纤法-珀传感器的方法。发现硼锗共掺光纤在40%氢氟酸溶液中的腐蚀速率是一般单模光纤的30倍以上。在1.357～1.400的折射率范围内,条纹对比度随折射率改变的灵敏度约为30 dB/RIU,分辨率约为3.33×10 5,线性度为0.99以上。化学腐蚀硼锗共掺光纤制作光纤法-珀传感器的方法,适于批量生产,成本低,并有望用于制作腔长较长的光纤法-珀传感器,以实现多个传感器的空间频分复用。An extrinsic optical fiber Fabry-Pérot sensor is fabricated by chemical etching of B-Ge co-doped optical fiber and electrical arc discharge.It is found that the etching rate of the fiber core is more than 30 times faster than that of the standard single-mode fiber when using 40% hydrofluoric acid as etching solution.Within the RI range of 1.350~1.400,the RI sensor has a sensitivity of ~30 dB/RIU and a resolution of ~3.33×10 5,with a linearity of 0.99.This low-cost method is suitable for mass production and has great potential for fabricating fiber-optic Fabry-Pérot sensors with long cavity lengths for use in spatial-frequency-division-multiplexing.

关 键 词：硼锗共掺光纤 光纤法-珀传感器 光纤传感器 折射率测量 

分 类 号：TN253[电子电信—物理电子学]