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Writing of Apodized Phase-Shifted Long-Period Fiber Gratings With a Computer-Controlled CO _{2} Laser

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3 Author(s)
Yanju Gu ; Key Lab. of Broadband Opt. Fiber Transm. & Commun. Networks, UESTC, Chengdu ; Kin Seng Chiang ; Yun Jiang Rao

We apply a CO2 laser writing method to the fabrication of sophisticated long-period fiber grating (LPFG) filters. The method allows the position of the writing beam to be computer-programmed to produce the required grating profile without using any mask. We demonstrate the flexibility and the controllability of the method with a number of apodized phase-shifted LPFGs written in a germanium-boron codoped fiber.

Published in:

Photonics Technology Letters, IEEE  (Volume:21 ,  Issue: 10 )