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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 15, Iss. 2 — Jan. 22, 2007
  • pp: 623–628

Design of monolithically integrated GeSi electro-absorption modulators and photodetectors on a SOI platform

Jifeng Liu, Dong Pan, Samerkhae Jongthammanurak, Kazumi Wada, Lionel C. Kimerling, and Jurgen Michel  »View Author Affiliations


Optics Express, Vol. 15, Issue 2, pp. 623-628 (2007)
http://dx.doi.org/10.1364/OE.15.000623


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Abstract

We present a design of monolithically integrated GeSi electroabsorption modulators and photodetectors for electronic-photonic integrated circuits on a silicon-on-insulator (SOI) platform. The GeSi electroabsorption modulator is based on the Franz-Keldysh effect, and the GeSi composition is chosen for optimal performance around 1550 nm. The designed modulator device is butt-coupled to Si(core)/SiO2(cladding) high index contrast waveguides, and has a predicted 3 dB bandwidth of >50 GHz and an extinction ratio of 10 dB. The same device structure can also be used for a waveguide-coupled photodetector with a predicted responsivity of > 1 A/W and a 3 dB bandwidth of > 35 GHz. Use of the same GeSi composition and device structure allows efficient monolithic process integration of the modulators and the photodetectors on an SOI platform.

© 2007 Optical Society of America

OCIS Codes
(160.1890) Materials : Detector materials
(160.2100) Materials : Electro-optical materials
(230.4110) Optical devices : Modulators
(230.5160) Optical devices : Photodetectors
(230.7370) Optical devices : Waveguides
(250.3140) Optoelectronics : Integrated optoelectronic circuits

ToC Category:
Optical Devices

History
Original Manuscript: October 24, 2006
Revised Manuscript: December 22, 2006
Manuscript Accepted: January 10, 2007
Published: January 22, 2007

Citation
Jifeng Liu, Dong Pan, Samerkhae Jongthammanurak, Kazumi Wada, Lionel C. Kimerling, and Jurgen Michel, "Design of monolithically integrated GeSi electro-absorption modulators and photodetectors on a SOI platform," Opt. Express 15, 623-628 (2007)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-15-2-623


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