Fiber Bragg grating sequential UV-writing method with real-time interferometric side-diffraction position monitoring

Kuei Chu Hsu*, Lih Gen Sheu, Kai Ping Chuang, Shu Hui Chang, Yin-Chieh Lai

*Corresponding author for this work

Research output: Contribution to journalArticle

10 Scopus citations

Abstract

This work presents a new sequential UV-writing procedure for fabricating long fiber Bragg grating (FBG) devices. To real-time accurately align the position of every exposed FBG section prior to UV exposure, a single-period reference fiber grating with strong refractive index modulation is probed by applying an interferometric side-diffraction method to measure the grating phase as the position reference. In this way the overlapped FBG sections can be connected section-by-section without obvious phase errors, even when the written index-modulation is weak.

Original languageEnglish
Pages (from-to)3795-3801
Number of pages7
JournalOptics Express
Volume13
Issue number10
DOIs
StatePublished - 15 May 2005

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