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Updated: Jun 2, 2026
Writing Bragg Gratings in Multicore Fibers
Published on: April 20, 2016
Control of light transmission in laser-written phase-shifted Bragg grating couplers
Sangwoo Ha1, Martin Ams, Graham D Marshall
1Nonlinear Physics Centre and Centre for Ultrahigh Bandwidth Devices for Optical Systems (CUDOS), Research School of Physics and Engineering, Australian National University, Canberra, ACT 0200, Australia.
Abstract:
We demonstrate the fabrication by direct laser writing and the operation of a directional coupler containing Bragg gratings in each waveguide. We achieve high-precision control over the longitudinal shift between the gratings, which feature first-order Bragg resonance at telecommunication wavelengths. We observe fundamental differences between light transmission characteristics in couplers with unshifted and shifted gratings in agreement with theoretical predictions.
