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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 17, Iss. 13 — Jun. 22, 2009
  • pp: 10457–10465

Compact and low power thermo-optic switch using folded silicon waveguides

Adam Densmore, Siegfried Janz, Rubin Ma, Jens H. Schmid, Dan-Xia Xu, André Delâge, Jean Lapointe, Martin Vachon, and Pavel Cheben  »View Author Affiliations

Optics Express, Vol. 17, Issue 13, pp. 10457-10465 (2009)

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By exploiting the small bend radius achievable using high-index-contrast silicon photonic wire waveguides, we demonstrate a new low power thermo-optic switch arranged in a dense, double spiral geometry. Such a design permits the waveguide length to be extended for increased phase shift, without the need for increased heated volume. This provides an effective means to reduce the power consumption of thermo-optic switches, as well as a compact geometry desirable for the development of switch arrays. A low switching power of 6.5 mW was obtained for a spiral-path Mach-Zehnder interferometer device having a 10% - 90% rise time of 14 μs. The switching power is shown to be reduced by more than 5 times compared to a Mach-Zehnder interferometer employing a conventional straight waveguide geometry.

© 2009 OSA

OCIS Codes
(130.0130) Integrated optics : Integrated optics
(130.3120) Integrated optics : Integrated optics devices
(160.6840) Materials : Thermo-optical materials
(130.4815) Integrated optics : Optical switching devices

ToC Category:
Integrated Optics

Original Manuscript: March 20, 2009
Revised Manuscript: May 22, 2009
Manuscript Accepted: May 27, 2009
Published: June 8, 2009

Adam Densmore, Siegfried Janz, Rubin Ma, Jens H. Schmid, Dan-Xia Xu, André Delâge, Jean Lapointe, Martin Vachon, and Pavel Cheben, "Compact and low power thermo-optic switch using folded silicon waveguides," Opt. Express 17, 10457-10465 (2009)

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