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Optica Publishing Group
  • Frontiers in Optics 2004/Laser Science XXII/Diffractive Optics and Micro-Optics/Optical Fabrication and Testing
  • OSA Technical Digest Series (Optica Publishing Group, 2004),
  • paper FThI4
  • https://doi.org/10.1364/FIO.2004.FThI4

Near field diffraction of a phase-shifted phase mask

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Abstract

Complex fiber Bragg gratings (FBG) incorporate specific phase-shifts along the FBG length, which allow new functionality and spectral performance. The phase shifts are used in sampled grating DBR lasers, sampled multichannel gratings, and phase-shift band-pass gratings. The phase-shifts are easily fabricated in an e-beam phase mask with high accuracy. It was assumed that the phase-shifts in the phase mask are replicated in the fiber during the FBG side-writing process. However, this approach is approximate.

© 2004 Optical Society of America

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