2 June 2014 Tunable phase-shifted FBG based on an in-grating bubble
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Proceedings Volume 9157, 23rd International Conference on Optical Fibre Sensors; 915778 (2014) https://doi.org/10.1117/12.2059446
Event: OFS2014 23rd International Conference on Optical Fiber Sensors, 2014, Santander, Spain
Abstract
We present a new type of phase-shifted FBGs based on an in-grating bubble fabricated by femtosecond laser ablation together with fusion splicing technique. A micro-channel vertically crossing the bubble is drilled by femtosecond laser to allow liquid to flow in or out. By filling different refractive index liquid into the bubble, the phase-shift peak is found to experience a linear red shift with the increase of refractive index. Such a PS-FBG could be used to develop a promising tunable optical filter and sensor.
© (2014) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Changrui Liao, Changrui Liao, Lei Xu, Lei Xu, Yiping Wang, Yiping Wang, D. N. Wang, D. N. Wang, Qiao Wang, Qiao Wang, Zhengyong Li, Zhengyong Li, Xiaoyong Zhong, Xiaoyong Zhong, Jiangtao Zhou, Jiangtao Zhou, Yingjie Liu, Yingjie Liu, } " Tunable phase-shifted FBG based on an in-grating bubble", Proc. SPIE 9157, 23rd International Conference on Optical Fibre Sensors, 915778 (2 June 2014); doi: 10.1117/12.2059446; https://doi.org/10.1117/12.2059446
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