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Proceedings Paper

Analysis and design of low chromatic dispersion in flat-top AWG with parabolic waveguide horn
Author(s): Fei Wu; Daqing Zhu; Tao Sun
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Paper Abstract

An effective way of constructing an AWG with a wide passband is to use a configuration with a parabolic horn as the input waveguide to a slab waveguide. This configuration provides good passband control ability and fabrication stability. However, the parabolic waveguide horn may induce chromatic dispersion (CD) in AWGs. In this paper, first the theory of broadening passband and origins of CD in AWG were analyzed, then the influences of the configuration parameters of parabolic horn to broaden spectrum of AWG were discussed through a beam propagation method (BPM) and numerical calculation. A good flat-top AWG was obtained by choosing rationally three parameters: exit width W, broadening coefficient α and length of multimode waveguide. And low CD was achieved through adjusting the length of multimode waveguide slightly.

Paper Details

Date Published: 10 January 2005
PDF: 7 pages
Proc. SPIE 5623, Passive Components and Fiber-based Devices, (10 January 2005); doi: 10.1117/12.572937
Show Author Affiliations
Fei Wu, Huazhong Univ. of Science and Technology (China)
Daqing Zhu, Huazhong Univ. of Science and Technology (China)
Tao Sun, Huazhong Univ. of Science and Technology (China)

Published in SPIE Proceedings Vol. 5623:
Passive Components and Fiber-based Devices
Yan Sun; Shuisheng Jian; Sang Bae Lee; Katsunari Okamoto, Editor(s)

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