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Proceedings Paper

A design method for a ratiometric wavelength monitor using a pair of directional couplers acting as edge filters
Author(s): A. M. Hatta; Q. Wang; G. Farrell; J. Zheng
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Paper Abstract

An integrated ratiometric wavelength monitor is proposed and designed, which consists of a Y-branch and two directional couplers acting as edge filters with opposite spectral responses. With a local supermodes solution, the optimal separation distance between two waveguides and the interaction length of the directional coupler are obtained to meet the desired spectral response with significantly less computation time by comparison to a parameter-space scanning method. The wavelength discrimination ability of the designed ratiometric structure is demonstrated numerically.

Paper Details

Date Published: 1 May 2008
PDF: 8 pages
Proc. SPIE 6996, Silicon Photonics and Photonic Integrated Circuits, 69961T (1 May 2008); doi: 10.1117/12.781225
Show Author Affiliations
A. M. Hatta, Dublin Institute of Technology (Ireland)
Q. Wang, Data Storage Institute (Singapore)
G. Farrell, Dublin Institute of Technology (Ireland)
J. Zheng, Jilin Univ. (China)

Published in SPIE Proceedings Vol. 6996:
Silicon Photonics and Photonic Integrated Circuits
Giancarlo C. Righini; Seppo K. Honkanen; Lorenzo Pavesi; Laurent Vivien, Editor(s)

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