OSA's Digital Library

Optics Letters

Optics Letters


  • Vol. 30, Iss. 16 — Aug. 15, 2005
  • pp: 2149–2151

Design of a silicon-based field-effect electro-optic modulator with enhanced light-charge interaction

Rohan D. Kekatpure, Mark L. Brongersma, and Rohit S. Shenoy  »View Author Affiliations

Optics Letters, Vol. 30, Issue 16, pp. 2149-2151 (2005)

View Full Text Article

Acrobat PDF (106 KB)

Browse Journals / Lookup Meetings

Browse by Journal and Year


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools



A new design for an all-silicon field-effect optical modulator in a ring resonator geometry is proposed and modeled by means of finite-element method simulations. It is shown that the optimal relative placement of the ultrathin field-effect-generated charge layers and the optical mode in the strong-confinement waveguides leads to more than an order-of-magnitude enhancement in the light-charge interaction compared with the recent predictions in the literature. We show that such an enhancement could provide optical modulation with a >7 dB extinction-ratio using a voltage swing of only 2 V, thus making our design compatible with complementary metal-oxide semiconductor technology.

© 2005 Optical Society of America

OCIS Codes
(130.3120) Integrated optics : Integrated optics devices
(230.2090) Optical devices : Electro-optical devices
(230.6120) Optical devices : Spatial light modulators
(250.7360) Optoelectronics : Waveguide modulators

Rohan D. Kekatpure, Mark L. Brongersma, and Rohit S. Shenoy, "Design of a silicon-based field-effect electro-optic modulator with enhanced light-charge interaction," Opt. Lett. 30, 2149-2151 (2005)

Sort:  Author  |  Year  |  Journal  |  Reset


  1. D. A. B. Miller, Proc. IEEE 88, 728 (2000). [CrossRef]
  2. M. Lipson, Int. J. Nanotechnol. 15, S622 (2004).
  3. A. Liu, R. Jones, L. Liao, D. Samara-Rubio, D. Rubin, O. Cohen, R. Nicolaescu, and M. Paniccia, Nature 427, 615 (2004). [CrossRef]
  4. C. Barrios and M. Lipson, J. Appl. Phys. 96, 6008 (2004). [CrossRef]
  5. C. Wang, M. Currie, S. Alexandrou, and T. Hsiang, Opt. Lett. 19, 1453 (1994).
  6. M. Liu and S. Chou, Appl. Phys. Lett. 68, 170 (1996). [CrossRef]
  7. MEDICI Software, V. 2002.4.0 (Synopsis, Inc., www.synopsis.com).
  8. FEMLab Software, V. 3.0a (Comsol, Inc., www.comsol.com).
  9. L. Liao, "Low loss polysilicon waveguides for silicon photonics," Ph.D. dissertation (Massachusetts Institute of Technology, 1997).
  10. J. Niehusmann, A. Vörckel, P. Bolivar, T. Wahlbrink, W. Henschel, and H. Kurz, Opt. Lett. 29, 2861 (2004). [CrossRef]

Cited By

Alert me when this paper is cited

OSA is able to provide readers links to articles that cite this paper by participating in CrossRef's Cited-By Linking service. CrossRef includes content from more than 3000 publishers and societies. In addition to listing OSA journal articles that cite this paper, citing articles from other participating publishers will also be listed.

« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited