摘要
为了提高光纤光栅传感系统的可兼容性和抗干扰能力,提出了在环形腔光纤激光器中,采用基于光纤布拉格光栅的法布里-珀罗谐振腔(F-P)对传感元进行波长寻址的理论模型,并利用悬臂梁技术对解调光纤光栅进行波长调谐。利用全光传感系统,具有分辨率高、插入损耗小、兼容性好等优点;锁定某一传感光栅的信号后,利用反馈系统对感测信号进行自动跟踪解调。利用一个传感光栅和一个解调光栅进行实验验证,得到了位于传感光栅中心波长1554．32 nm的激光输出,证实了系统的波长可解调能力。
Aiming at improving the sensing system compatiblity and anti-jamming ability, in the loop cavity of fiber-laser, based on the F-P resonator comprised of FBGS to interrogate sensors and the central wavelength tuned by the beam elements is proposed and demonstrated. The all-optics sensing system has the advantages of high resolution, low inserting loss and compatible completely. When the sensing signal of the FBG is locked, the feedback system can track and demodulate it automatically. To confirm the theory, using a sensing and demodulation gratings that get the laser output at the central wavelength 1554.32 nm which is fit with our target.
出处
《量子电子学报》
CAS
CSCD
北大核心
2006年第3期424-427,共4页
Chinese Journal of Quantum Electronics
关键词
激光技术
全光传感系统
波长解调
有源传感
laser techniques
all-optics system
wavelength demodulation
active sensing
