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Optical Engineering

Gaussian apodized volume grating to suppress the crosstalk in holographic demultiplexers using high-efficiency photopolymers
Author(s): Duc-Dung Do; Sung-Kyun Park; Jun-Won An; Nam Kim; Kwon-Yeon Lee
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Paper Abstract

A Gaussian apodization technique applied to a transmission volume hologram for a holographic demultiplexer is proposed. A Gaussian apodized grating 15×11 mm in size, 38 μm thick, and with a 3.2-mm horizontal standard deviation of the modulating index profile is fabricated. A 22-channel demultiplexer based on that grating has been optically demonstrated. Channel spacing, interchannel crosstalk level, and channel uniformity of 0.8 nm, –30 dB, and 1.5 dB, respectively, are obtained. In addition, an insertion loss of 13 dB, which is caused by the primary limitation of this technique, is observed.

Paper Details

Date Published: 1 September 2004
PDF: 6 pages
Opt. Eng. 43(9) doi: 10.1117/1.1773774
Published in: Optical Engineering Volume 43, Issue 9
Show Author Affiliations
Duc-Dung Do, Chungbuk National Univ. (South Korea)
Sung-Kyun Park, SK Telecom (South Korea)
Jun-Won An, Chungbuk National Univ. (South Korea)
Nam Kim, Chungbuk National Univ. (South Korea)
Kwon-Yeon Lee, Sunchon National Univ. (South Korea)

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