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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 16, Iss. 26 — Dec. 22, 2008
  • pp: 21333–21338

Optical properties of new wide heterogeneous waveguides with thermo optical shifters

Francesco De Leonardis, Andrei V. Tsarev, and Vittorio M. N. Passaro  »View Author Affiliations

Optics Express, Vol. 16, Issue 26, pp. 21333-21338 (2008)

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We present analysis and simulation of novel silicon-on-insulator (SOI) heterogeneous waveguides with thermo-optic phase shifters. New structure design contains a p-n junction on both sides of SOI ridge waveguide with 220 nm×35 µm silicon core. Strongly mode-dependent optical losses (by additional free charge absorption) provide quasi-singe-mode behavior of wide waveguide with mode size ~10 µm. Local heater produces an efficient phase shifting by small temperature increase (ΔT~2K), switching power (<40 mW) and switching time (<10 µs). Mode optical losses are significantly decreased at high heating (ΔT~120 K).

© 2008 Optical Society of America

OCIS Codes
(060.1810) Fiber optics and optical communications : Buffers, couplers, routers, switches, and multiplexers
(130.0130) Integrated optics : Integrated optics
(130.5990) Integrated optics : Semiconductors
(160.6840) Materials : Thermo-optical materials

ToC Category:
Integrated Optics

Original Manuscript: September 29, 2008
Revised Manuscript: October 29, 2008
Manuscript Accepted: October 30, 2008
Published: December 10, 2008

Francesco De Leonardis, Andrei V. Tsarev, and Vittorio M. Passaro, "Optical properties of new wide heterogeneous waveguides with thermo optical shifters," Opt. Express 16, 21333-21338 (2008)

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