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Proceedings Paper

Crosstalk between two nonparallel waveguides in AWG demultiplexer
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Paper Abstract

Based on the mutual coupling coefficient what derived from the method of field distribution analysis, the expressions of coupling factor and coupling efficiency between two identical structure nonparallel straight rectangular waveguides are suggested, and computing instances are introduced for showing the crosstalk between adjacent rectangular waveguides in the star coupler of an AWG demultiplexer. Then, an approximation expression for computing the maximal crosstalk between adjacent arrayed waveguides of an AWG demultiplexer is recommended. As the crosstalk between adjacent arrayed waveguides of an AWG demultiplexer is in need of a limit, the expression for estimating the space between the end face centers of adjacent arrayed waveguides in an AWG demultiplexer is advanced also, and a computing instance is introduced for showing the crosstalk between adjacent arrayed waveguides in an AWG demultiplexer. Finally, based on the Gaussian approximation for the mode field distribution of optical waveguide, the theoretical model of the spectral response efficiency of an AWG demultiplexer is engaged, a computing instance is presented for showing the spectral response characteristic and crosstalk characteristic of an bilateral symmetry structure AWG demultiplexer. These works provides some help for ascertaining the basic parameters of an AWG demultiplexer.

Paper Details

Date Published: 11 November 2008
PDF: 9 pages
Proc. SPIE 7134, Passive Components and Fiber-based Devices V, 713417 (11 November 2008); doi: 10.1117/12.803557
Show Author Affiliations
Fuyuan Guo, Fujian Normal Univ. (China)
Lianhuang Li, Fujian Normal Univ. (China)
Minghua Wang, Zhejiang Univ. (China)


Published in SPIE Proceedings Vol. 7134:
Passive Components and Fiber-based Devices V
Ming-Jun Li; Ping Shum; Ian H. White; Xingkun Wu, Editor(s)

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