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Proceedings Paper

Chromatic dispersion characteristics of holographic multiple-channel demultiplexers
Author(s): Seunghoon Han; Seunghwan Chung; Taesu Kim; Yong Jun Lim; Byoungho Lee
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Paper Abstract

We examine and characterize a wavelength demultiplexer using a holographic grating for WDM multiple-channel applications. The holographic grating is a kind of volume grating recorded in a photopolymer, which is different from the general surface relief type diffraction gratings. The holographic grating disperses the wavelength components of incident wave into spatial domain so that through the coupling optics, different wavelength channels can be separated to the different output optical fibers. The characteristics of the polymeric holographic grating are compared to those of the relief type diffraction gratings. Overall demuliplexer characteristics is characterized by applying first order Born approximation with electro-magnetic vectorial analysis. It shows that the amplitude and group velocity (i.e., the chromatic dispersion) characteristics are determined by the holographic grating phase structure and out-coupling optics lens aberrations. The out-coupling lens aberration effect to the chromatic dispersion is examined and classified according to the lens aberration classification. The holographic grating phase perturbation (i.e., chirping) can be used to minimize the lens aberration caused chromatic dispersion to improve the demultiplexer performance. The demultiplexer polarization dependent loss is also examined in relation to the spatial dispersion and diffraction efficiency characteristics.

Paper Details

Date Published: 7 February 2005
PDF: 9 pages
Proc. SPIE 5636, Holography, Diffractive Optics, and Applications II, (7 February 2005); doi: 10.1117/12.575751
Show Author Affiliations
Seunghoon Han, Seoul National Univ. (South Korea)
Seunghwan Chung, Seoul National Univ. (South Korea)
Taesu Kim, Seoul National Univ. (South Korea)
Yong Jun Lim, Seoul National Univ. (South Korea)
Byoungho Lee, Seoul National Univ. (South Korea)

Published in SPIE Proceedings Vol. 5636:
Holography, Diffractive Optics, and Applications II
Yunlong Sheng; Dahsiung Hsu; Chongxiu Yu; Byoungho Lee, Editor(s)

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