Crosstalk between two nonparallel waveguides in AWG demultiplexer

Fuyuan Guo; Lianhuang Li; Minghua Wang

doi:10.1117/12.803557

11 November 2008 Crosstalk between two nonparallel waveguides in AWG demultiplexer

Fuyuan Guo, Lianhuang Li, Minghua Wang

Proceedings Volume 7134, Passive Components and Fiber-based Devices V; 713417 (2008) https://doi.org/10.1117/12.803557
Event: Asia-Pacific Optical Communications, 2008, Hangzhou, China

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.

Citation Download Citation

Fuyuan Guo, Lianhuang Li, and Minghua Wang "Crosstalk between two nonparallel waveguides in AWG demultiplexer", Proc. SPIE 7134, Passive Components and Fiber-based Devices V, 713417 (11 November 2008); https://doi.org/10.1117/12.803557

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