Planar waveguide echelle gratings: an embeddable diffractive element for photonic integrated circuits

Author

Janz, S. ; Pearson, M. ; Lamontagne, B. ; Erickson, L. ; Delâge, A. ; Cheben, P. ; Xu, D.X. ; Gao, M. ; Balakrishnan, A. ; Miller, I. ; Charbonneau, S.

Author_Institution

Optenia Inc., Ottawa, Ont., Canada

fYear

2002

fDate

17-22 Mar 2002

Firstpage

69

Lastpage

70

Abstract

We have demonstrated a 40-channel echelle grating demultiplexer with a 100 GHz channel spacing, using silica-on-silicon planar waveguides. We show the output spectrum of several channels, measured using a tunable laser source. The measured cross-talk is better than -35 dB, the insertion loss is approximately 5 dB including fibre-to-waveguide coupling, and the polarization birefringence has been eliminated using a modified compensator design which eliminates losses due to mode mismatch. Planar waveguide EG devices are also easily scalable to higher channel counts and the device described here is currently being adapted to a 256-channel demultiplexer chip.

Keywords

demultiplexing equipment; diffraction gratings; diffractive optical elements; integrated optoelectronics; optical communication equipment; optical planar waveguides; optical waveguide components; 256-channel demultiplexer chip; 40-channel echelle grating demultiplexer; 5 dB; cross-talk; embeddable diffractive element; fibre-to-waveguide coupling; insertion loss; mode mismatch; modified compensator design; photonic integrated circuits; planar waveguide echelle gratings; polarization birefringence; silica-on-silicon planar waveguides; tunable laser source; Channel spacing; Diffraction gratings; Fiber lasers; Integrated circuit measurements; Laser modes; Loss measurement; Photonic integrated circuits; Planar waveguides; Tunable circuits and devices; Waveguide lasers;

fLanguage

English

Publisher

ieee

Conference_Titel

Optical Fiber Communication Conference and Exhibit, 2002. OFC 2002

Print_ISBN

1-55752-701-6

Type

conf

DOI

10.1109/OFC.2002.1036209

Filename

1036209