Novel fiber bragg grating fabrication system for long gratings with independent apodization and with local phase and wavelength control

K. M. Chung, L. Dong, Chao Lu, Hwa Yaw Tam

Research output: Journal article publicationJournal articleAcademic researchpeer-review

15 Citations (Scopus)

Abstract

We proposed and demonstrated a novel practical fiber Bragg grating (FBG) fabrication setup constructed with high performance linear stages, piezoelectric translation (PZT) stages, and a highly stable continuous wave laser. The FBG fabrication system enables writing of long FBGs by a continuous translate-and-write process and allows implementation of arbitrary chirp and apodization. A key innovation is thatthe local Bragg wavelength is controlled by a simple movement of the phase mask by a PZT in the direction perpendicular to its surface. The focus position of the two writing beams is not changed during the Bragg wavelength change, an intrinsic feature of the design, ensuring simplicity, robustness and stability. Apodization can be achieved byvibrating the phase mask in the direction parallel to its surface by aPZT. Phase steps can also be inserted in FBGs at any desired locations by stepping the same PZT. A long uniform FBG and a linearly chirped FBG are written to demonstrate the performance of the setup.
Original languageEnglish
Pages (from-to)12664-12672
Number of pages9
JournalOptics Express
Volume19
Issue number13
DOIs
Publication statusPublished - 20 Jun 2011

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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