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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 18, Iss. 26 — Dec. 20, 2010
  • pp: 27802–27819

Theoretical investigation of silicon MOS-type plasmonic slot waveguide based MZI modulators

Shiyang Zhu, G. Q. Lo, and D. L. Kwong  »View Author Affiliations


Optics Express, Vol. 18, Issue 26, pp. 27802-27819 (2010)
http://dx.doi.org/10.1364/OE.18.027802


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Abstract

In this paper, a Mach-Zehnder silicon nanoplasmonic electro-optic modulator is proposed and theoretically analyzed. It is composed of horizontal metal-SiO2-Si-metal plasmonic slot waveguides for phase shifting and ultracompact V-shape splitter/combiner to link the plasmonic slot waveguides and the conventional Si dielectric waveguides. The proposed modulator can be directly integrated into existing Si electronic photonic integrated circuits (EPICs) and be fabricated using standard Si complementary metal-oxide-semiconductor (CMOS) technology. The modulator’s parameters are optimized through systematic 2-dimensional numerical simulations. For a modulator with 3-µm-long Ag-SiO2(2 nm)-Si(50 nm)-Ag phase shifter and 0.35-µm-long splitter/combiner operating at 1.55-µm wavelength, simulation shows an insertion loss of ~–8 dB, an extinction ratio of ~7.3 dB — with a switching voltage of ~5.6 V, and a bandwidth of ~500 GHz. A possible approach to reduce the switching voltage is addressed.

© 2010 OSA

OCIS Codes
(240.6680) Optics at surfaces : Surface plasmons
(250.5300) Optoelectronics : Photonic integrated circuits
(250.7360) Optoelectronics : Waveguide modulators

ToC Category:
Optoelectronics

History
Original Manuscript: September 17, 2010
Revised Manuscript: November 12, 2010
Manuscript Accepted: November 15, 2010
Published: December 17, 2010

Citation
Shiyang Zhu, G. Q. Lo, and D. L. Kwong, "Theoretical investigation of silicon MOS-type plasmonic slot waveguide based MZI modulators," Opt. Express 18, 27802-27819 (2010)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-18-26-27802


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