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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 15 — Jul. 18, 2011
  • pp: 14354–14369

A high speed electro-optic phase shifter based on a polymer-infiltrated P-S-N diode capacitor

Maoqing Xin, Ching Eng Png, Soon Thor Lim, Vivek Dixit, and Aaron J. Danner  »View Author Affiliations

Optics Express, Vol. 19, Issue 15, pp. 14354-14369 (2011)

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A polymer-infiltrated P-S-N diode capacitor configuration is proposed and a high speed electro-optic phase shifter based on a silicon organic hybrid platform is designed and modeled. The structure enables fast carrier depletion in addition to the second order nonlinearity so that a large electro-optic overlapped volume is achievable. Moreover, the device speed can be significantly improved with the introduction of free carriers due to a reduced experienced transient capacitance. The advantages of the diode capacitor structure are highly suitable for application to a class of low aspect ratio slot waveguides where the RC limitation of the radio frequency response is minimized. According to our numerical results, by optimizing both the waveguide geometry and polarization mode, at least 269 GHz 3-dB bandwidth with high efficiency of 5.5 V-cm is achievable. More importantly, the device does not rely on strong optical confinement within the nano-slot, a feature that gives considerable tolerance in the use of nano-fabrication techniques. Finally, the high overlap and energy efficiency of the device can be applied to slow light or optical resonance media for realizing photonic integrated circuits-based green photonics.

© 2011 OSA

OCIS Codes
(160.4330) Materials : Nonlinear optical materials
(230.2090) Optical devices : Electro-optical devices
(250.5300) Optoelectronics : Photonic integrated circuits
(250.7360) Optoelectronics : Waveguide modulators

ToC Category:

Original Manuscript: May 9, 2011
Revised Manuscript: June 29, 2011
Manuscript Accepted: July 1, 2011
Published: July 12, 2011

Maoqing Xin, Ching Eng Png, Soon Thor Lim, Vivek Dixit, and Aaron J. Danner, "A high speed electro-optic phase shifter based on a polymer-infiltrated P-S-N diode capacitor," Opt. Express 19, 14354-14369 (2011)

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