Reflectivity-tunable fiber Bragg grating reflectors
Journal
IEEE Photonics Technology Letters
Journal Volume
12
Journal Issue
2
Pages
176-178
Date Issued
2000
Date
2000
Author(s)
URI
Abstract
We report a novel device that modulates the Bragg reflectivity of a fiber grating by exciting the transverse vibration of the fiber through an acoustic wave. The excitation of the transverse vibration, leading to fiber microbending, induces the coupling of the fiber core mode into cladding modes. This leads to the reduction of core-mode power and hence that of Bragg reflection. This mechanism provides us a means to control the reflectivity after a fiber Bragg grating is fabricated. The numerical results based on a simple micro-bending model agree well in trend with the experimental data.
SDGs
Other Subjects
Acoustic waves; Light reflection; Optical fibers; Optical filters; Fiber Bragg grating (FBG); Diffraction gratings
Type
journal article
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