IEICE Electronics Express
Online ISSN : 1349-2543
LETTER
Fabrication and characterization of hollow waveguide distributed bragg reflectors
Yasuki SakuraiAkihiro MatsutaniFumio Koyama
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2004 Volume 1 Issue 4 Pages 81-85

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Abstract

We present the fabrication and characterization of a novel distributed Bragg reflector consisting of a grating loaded slab hollow waveguide. In this structure, we are able to obtain a high reflectivity even by using thin and short surface gratings because of the large contrast in refractive indices between a grating material and an air-core. We fabricated a slab hollow waveguide Bragg reflector with 620µm long, 190nm deep 1st-order circular grating composed of SiO2 exhibiting strong Bragg reflection at 1558nm with an air-core thickness of 10µm for TM mode. The peak reflectivity is 65% including fiber coupling loss, the 3dB bandwidth is 2.8nm and the grating-induced loss is less than 0.5dB.

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© 2004 by The Institute of Electronics, Information and Communication Engineers
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