Broadband filtering of the fundamental mode of a few-mode waveguide with a phase-shifted long-period grating

Quandong Huang; Wen Wang; Wei Jin; Kin Seng Chiang

doi:10.1364/CLEOPR.2018.Tu3E.5

CLEO Pacific Rim Conference 2018
OSA Technical Digest (Optica Publishing Group, 2018),
paper Tu3E.5
•https://doi.org/10.1364/CLEOPR.2018.Tu3E.5

Broadband filtering of the fundamental mode of a few-mode waveguide with a phase-shifted long-period grating

Quandong Huang, Wen Wang, Wei Jin, and Kin Seng Chiang

Conference on Lasers and Electro-Optics/Pacific Rim 2018

Hong Kong China
29 July–3 August 2018
ISBN: 978-1-943580-45-3

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Waveguide Devices I (Tu3E)

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Q. Huang, W. Wang, W. Jin, and K. S. Chiang, "Broadband filtering of the fundamental mode of a few-mode waveguide with a phase-shifted long-period grating," in CLEO Pacific Rim Conference 2018, OSA Technical Digest (Optica Publishing Group, 2018), paper Tu3E.5.

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Abstract

We design and fabricate a phase-shifted long-period grating in a few-mode waveguide to filter out the fundamental mode. Our experimental device shows a mode extinction ratio larger than 8 dB from 1520 to 1610 nm.

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