Germanium-on-Silicon Mid-Infrared Arrayed Waveguide Grating Multiplexers

Author

Malik, Anuj ; Muneeb, M. ; Pathak, Sant ; Shimura, Y. ; Van Campenhout, J. ; Loo, Roger ; Roelkens, Gunther

Author_Institution

Photonics Res. Group, Ghent Univ., Ghent, Belgium

Volume

25

Issue

18

fYear

2013

fDate

Sept.15, 2013

Firstpage

1805

Lastpage

1808

Abstract

In this letter, we describe the use of a germanium-on-silicon waveguide platform to realize an arrayed waveguide grating (AWG) operating in the 5 μm wavelength range, which can be used as a wavelength multiplexer for mid-infrared (midIR) light engines or as the core element of a midIR spectrometer. Ge-on-Si waveguide losses in the range 2.5-3.5 dB/cm for TE polarized light and 3-4 dB/cm for TM polarized light in the 5.15-5.4 μm wavelength range are reported. A 200 GHz channel spacing 5-channel AWG with an insertion loss/crosstalk of 2.5/3.1 dB and 20/16 dB for TE and TM polarization, respectively, is demonstrated.

Keywords

arrayed waveguide gratings; integrated optics; light polarisation; multiplexing equipment; optical crosstalk; TE polarized light; TM polarized light; frequency 200 GHz; insertion loss; midinfrared light engines; optical crosstalk; wavelength 5 mum; wavelength 5.15 mum to 5.4 mum; Arrayed waveguide gratings; Germanium; Insertion loss; Multiplexing; Quantum cascade lasers; Silicon; Mid-infrared; arrayed waveguide gratings;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2013.2276479

Filename

6574216