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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Editor: Henry van Driel
  • Vol. 29, Iss. 2 — Feb. 1, 2012
  • pp: 215–219

Design of low-dispersion-discrepancy silicon waveguide for broadband polarization-independent wavelength conversion

Qiang Liu, Shiming Gao, Lizhong Cao, and Sailing He  »View Author Affiliations


JOSA B, Vol. 29, Issue 2, pp. 215-219 (2012)
http://dx.doi.org/10.1364/JOSAB.29.000215


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Abstract

We report a broadband polarization-independent wavelength conversion by reducing the dispersion discrepancy between the fundamental transverse electric (TE) and transverse magnetic (TM) modes in a silicon nanowire waveguide, through optimizing of the waveguide geometry. The size of the waveguide is optimized to 780  nm×795  nm (height×width) to ensure that the TE and TM zero-dispersion wavelengths locate at ~1550  nm, and the group velocity dispersion difference between the TE and TM modes is less than 33  ps/(nm·km) in the wavelength range of 1300–1800 nm. Based on an angled-polarization pumped four-wave mixing scheme, a 1 dB polarization-independent bandwidth of 400 nm is achieved in a 0.8 cm-long optimized waveguide when the pump is set at 1553 nm. The tolerance to the pump angle detuning is also strengthened in the optimized waveguide.

© 2012 Optical Society of America

OCIS Codes
(190.4380) Nonlinear optics : Nonlinear optics, four-wave mixing
(190.4390) Nonlinear optics : Nonlinear optics, integrated optics
(130.7405) Integrated optics : Wavelength conversion devices

ToC Category:
Nonlinear Optics

History
Original Manuscript: June 7, 2011
Revised Manuscript: October 28, 2011
Manuscript Accepted: October 31, 2011
Published: January 17, 2012

Citation
Qiang Liu, Shiming Gao, Lizhong Cao, and Sailing He, "Design of low-dispersion-discrepancy silicon waveguide for broadband polarization-independent wavelength conversion," J. Opt. Soc. Am. B 29, 215-219 (2012)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-29-2-215

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