Post-exposure processing and refractive index change in hydrogen-loaded/annealed fiber grating

Refractive index change induced by post-exposing in annealed and unannealed fiber Bragg grating are investigated in theory and experiment. The relationship between grating index change, initial refractive index distribution and post-exposure are analyzed based on the two-step process photosensitive...

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Bibliographic Details
Published in:Optik (Stuttgart) 2016-06, Vol.127 (11), p.4605-4609
Main Authors: Jiang, Peng, Bi, Weihong, Qi, Yuefeng, Wu, Yang, Wang, Feng, Tian, Pengfei
Format: Article
Language:English
Subjects:
Annealing
Evolution
Fiber grating
Fibers
Lasers
Modulation
Optical fibers
Photosensitivity
Post-exposure
Reflectivity
Refractive index
Refractivity
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Summary:Refractive index change induced by post-exposing in annealed and unannealed fiber Bragg grating are investigated in theory and experiment. The relationship between grating index change, initial refractive index distribution and post-exposure are analyzed based on the two-step process photosensitive theory to build up the mathematical models of the refractive mean index and the refractive index modulation change. With 193nm UV laser post-exposure processing, the evolutions of resonant wavelength and reflectivity are demonstrated and the kinetics of refractive mean index and refractive index modulation are discussed.
ISSN:0030-4026
1618-1336
DOI:10.1016/j.ijleo.2016.01.137