Fiber Bragg grating sequential UV-writing method with real-time interferometric side-diffraction position monitoring.
نویسندگان
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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ورودعنوان ژورنال:
- Optics express
دوره 13 10 شماره
صفحات -
تاریخ انتشار 2005