Planar add/drop two-wavelength filter employing a blazed Bragg grating and a 3x3 asymmetric coupler

Keith W. Gaff; Francois J. Ladouceur; John D. Love

doi:10.1117/12.370331

12 November 1999 Planar add/drop two-wavelength filter employing a blazed Bragg grating and a 3x3 asymmetric coupler

Keith W. Gaff, Francois J. Ladouceur, John D. Love

Proceedings Volume 3896, Design, Fabrication, and Characterization of Photonic Devices; (1999) https://doi.org/10.1117/12.370331
Event: International Symposium on Photonics and Applications, 1999, Singapore, Singapore

Abstract

We propose a novel 6-port planar waveguide coupler device for adding and/or dropping tow different wavelengths from a WDM channel using a single grating. By writing a blazed Bragg grating into a few-moded core at a slight angle to the waveguide propagation direction, power can be coupled from the fundamental mode into higher-order, backward-propagating modes and vice-versa. Each such mode is channelled into a particular output port using an adiabatic splitter. Modeling results indicate that more than 99.99 percent of the power in the fundamental mode can be coupled into the higher-order modes at their respective Bragg wavelengths.

Citation Download Citation

Keith W. Gaff, Francois J. Ladouceur, and John D. Love "Planar add/drop two-wavelength filter employing a blazed Bragg grating and a 3x3 asymmetric coupler", Proc. SPIE 3896, Design, Fabrication, and Characterization of Photonic Devices, (12 November 1999); https://doi.org/10.1117/12.370331

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