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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 17, Iss. 18 — Aug. 31, 2009
  • pp: 15947–15958

Silicon waveguide modulator based on carrier depletion in periodically interleaved PN junctions

Zhi-Yong Li, Dan-Xia Xu, W. Ross McKinnon, Siegfried Janz, Jens H. Schmid, Pavel Cheben, and Jin-Zhong Yu  »View Author Affiliations


Optics Express, Vol. 17, Issue 18, pp. 15947-15958 (2009)
http://dx.doi.org/10.1364/OE.17.015947


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Abstract

We present the design and numerical simulation results for a silicon waveguide modulator based on carrier depletion in a linear array of periodically interleaved PN junctions that are oriented perpendicular to the light propagation direction. In this geometry the overlap of the optical waveguide mode with the depletion region is much larger than in designs using a single PN junction aligned parallel to the waveguide propagation direction. Simulations predict that an optimized modulator will have a high modulation efficiency of 0.56 V·cm for a 3V bias, with a 3 dB frequency bandwidth of over 40 GHz. This device has a length of 1.86 mm with a maximum intrinsic loss of 4.3 dB at 0V bias, due to free carrier absorption.

© 2009 OSA

OCIS Codes
(060.4080) Fiber optics and optical communications : Modulation
(250.5300) Optoelectronics : Photonic integrated circuits
(250.7360) Optoelectronics : Waveguide modulators
(130.4110) Integrated optics : Modulators

ToC Category:
Optoelectronics

History
Original Manuscript: June 30, 2009
Revised Manuscript: August 9, 2009
Manuscript Accepted: August 10, 2009
Published: August 24, 2009

Citation
Zhi-Yong Li, Dan-Xia Xu, W. Ross McKinnon, Siegfried Janz, Jens H. Schmid, Pavel Cheben, and Jin-Zhong Yu, "Silicon waveguide modulator based on carrier depletion in periodically interleaved PN junctions," Opt. Express 17, 15947-15958 (2009)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-17-18-15947


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