Aberration properties in a chirped grating for coarse wavelength division demultiplexing

We studied the imaging performance of a chirped grating for a demultiplexer designed for coarse wavelength division multiplexing using a wavefront aberration analysis and the ray tracing simulation. The demultiplexer was composed of a chirped grating, cylindrical lenses, and a waveguide. The best im...

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Bibliographic Details
Published in:Applied optics (2004) 2006-08, Vol.45 (22), p.5597-5606
Main Authors: Sugita, Tatsuya, Hirano, Kouki, Abe, Tomiya, Itoh, Yuzo
Format: Article
Language:English
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Summary:We studied the imaging performance of a chirped grating for a demultiplexer designed for coarse wavelength division multiplexing using a wavefront aberration analysis and the ray tracing simulation. The demultiplexer was composed of a chirped grating, cylindrical lenses, and a waveguide. The best image point and the spot shape focused by the chirped grating were effectively calculated with the wavefront aberration. We applied the aberration analysis to design a waveguide to connect branched beams to photodetectors, and we confirmed the demultiplexing performance experimentally.
ISSN:1559-128X
DOI:10.1364/AO.45.005597