期刊
OPTICS AND LASER TECHNOLOGY
卷 74, 期 -, 页码 119-124出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.optlastec.2015.05.018
关键词
Long period grating; Optical fiber; Femtosecond laser
资金
- Korea Carbon Capture and Sequestration RD Center (KCRC)
- Brain Pool program of the Korean Federation of Science and Technology Societies (KOFST)
Ultrafast laser induced refractive index (RI) change in the core of a standard telecommunication fiber is quantified using the spectral shift of an in-fiber Bragg grating (FBG) based Fabry-Perot cavity. Measured RI change is used to design and then fabricate long period grating (LPG) in pure silica core single mode fiber (SMF) employing identical laser irradiation conditions used in core index characterization. A core length of 100 gm within the 10 mm long cavity structure is scanned with ultrafast laser pulses, and the corresponding spectral shift is used to calculate index modification. The index change of 0.000449 found in characterization process is used to simulate the LPG in pure silica fiber. Identical index modulation written in pure silica fiber by femtosecond laser radiation provides a rejection band that is in good agreement with the simulation results. The fabricated LPG sensors are also characterized for ambient temperature and RI. (C) 2015 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据