NDLI: Advances Toward Ge/SiGe Quantum-Well Waveguide Modulators at 1.3μm

Content Provider	IEEE Xplore Digital Library
Author	Rouifed, M.-S. Marris-Morini, D. Chaisakul, P. Frigerio, J. Isella, G. Chrastina, D. Edmond, S. Le Roux, X. Coudevylle, J.-R. Bouville, D. Vivien, L.
Copyright Year	1995
Abstract	The paper reports on the developments of Ge/SiGe quantum well (QW) waveguide modulators operating at 1.3 μm. Two modulator configurations have been studied: The first one is based on QW structures grown on a 13-μm SiGe buffer on bulk silicon. Light was directly coupled and propagated in Ge/Si_0.35Ge_0.65 QWs. Using a 3-μm-wide and 50-μm-long modulator, an extinction ratio (ER) up to 6 dB was obtained at 1.3 μm. In the second configuration, the aim is to integrate Ge/SiGe QW on standard silicon-on-insulator (SOI) waveguides. A reduction of buffer thickness is then required to allow the light coupling from Si waveguide to Ge/SiGe QW. To this purpose, first we demonstrated QCSE with a thin (360-nm-thick) Si_0.08Ge_0.92 buffer on silicon using the well-known Ge/Si_0.15Ge_0.85 QWs (operated at a wavelength of 1.4 μm). Based on these promising experimental results, we theoretically investigated properties of a Ge/Si_0.65Ge_0.35 QW modulator integrated on SOI waveguides. 7.7 dB ER were predicted with 4 dB optical insertion loss and an estimated energy consumption of 59 fJ/bit for a modulator length as short as 69 μm.
Sponsorship	IEEE Lasers and Electro-Optics Society
Starting Page	33
Ending Page	39
Page Count	7
File Size	845656
File Format	PDF
ISSN	1077260X
Volume Number	20
Issue Number	4
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Optical waveguides Modulation Silicon germanium Silicon Optical losses Optical buffering Extinction ratio waveguide integration quantum wells Ge/SiGe
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics Electrical and Electronic Engineering

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