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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 20, Iss. 12 — Jun. 4, 2012
  • pp: 13215–13225

Photothermal optical modulation of ultra-compact hybrid Si-VO2 ring resonators

Judson D. Ryckman, V. Diez-Blanco, Joyeeta Nag, Robert E. Marvel, B. K. Choi, Richard F. Haglund, Jr., and Sharon M. Weiss  »View Author Affiliations

Optics Express, Vol. 20, Issue 12, pp. 13215-13225 (2012)

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We demonstrate photothermally induced optical switching of ultra-compact hybrid Si-VO2 ring resonators. The devices consist of a sub-micron length ~70nm thick patch of phase-changing VO2 integrated onto silicon ring resonators as small as 1.5μm in radius. The semiconductor-to-metal transition (SMT) of VO2 is triggered using a 532nm pump laser, while optical transmission is probed using a tunable cw laser near 1550nm. We observe optical modulation greater than 10dB from modest quality-factor (~103) resonances, as well as a large –1.26nm change in resonant wavelength Δλ, resulting from the large change in the dielectric function of VO2 in the insulator-to-metal transition achieved by optical pumping.

© 2012 OSA

OCIS Codes
(160.6840) Materials : Thermo-optical materials
(230.3120) Optical devices : Integrated optics devices
(230.4110) Optical devices : Modulators
(230.5750) Optical devices : Resonators
(130.4815) Integrated optics : Optical switching devices

ToC Category:
Integrated Optics

Original Manuscript: February 27, 2012
Revised Manuscript: May 19, 2012
Manuscript Accepted: May 24, 2012
Published: May 29, 2012

Judson D. Ryckman, V. Diez-Blanco, Joyeeta Nag, Robert E. Marvel, B. K. Choi, Richard F. Haglund, and Sharon M. Weiss, "Photothermal optical modulation of ultra-compact hybrid Si-VO2 ring resonators," Opt. Express 20, 13215-13225 (2012)

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