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

نویسندگان

  • Kuei-Chu Hsu
  • Lih-Gen Sheu
  • Kai-Ping Chuang
  • Shu-Hui Chang
  • Yinchieh Lai
چکیده

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.

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عنوان ژورنال:
  • Optics express

دوره 13 10  شماره 

صفحات  -

تاریخ انتشار 2005