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Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Xi-Cheng Zhang
  • Vol. 39, Iss. 9 — May. 1, 2014
  • pp: 2699–2702

Thermally controlled coupling of a rolled-up microtube integrated with a waveguide on a silicon electronic-photonic integrated circuit

Qiuhang Zhong, Zhaobing Tian, Venkat Veerasubramanian, M. Hadi Tavakoli Dastjerdi, Zetian Mi, and David V. Plant  »View Author Affiliations


Optics Letters, Vol. 39, Issue 9, pp. 2699-2702 (2014)
http://dx.doi.org/10.1364/OL.39.002699


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Abstract

We report on the first experimental demonstration of the thermal control of coupling strength between a rolled-up microtube and a waveguide on a silicon electronic-photonic integrated circuit. The microtubes are fabricated by selectively releasing a coherently strained GaAs/InGaAs heterostructure bilayer. The fabricated microtubes are then integrated with silicon waveguides using an abruptly tapered fiber probe. By tuning the gap between the microtube and the waveguide using localized heaters, the microtube–waveguide evanescent coupling is effectively controlled. With heating, the extinction ratio of a microtube whispering-gallery mode changes over an 18 dB range, while the resonant wavelength remains approximately unchanged. Utilizing this dynamic thermal tuning effect, we realize coupling modulation of the microtube integrated with the silicon waveguide at 2 kHz with a heater voltage swing of 0–6 V.

© 2014 Optical Society of America

OCIS Codes
(140.4780) Lasers and laser optics : Optical resonators
(140.3945) Lasers and laser optics : Microcavities
(130.3990) Integrated optics : Micro-optical devices

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: February 13, 2014
Revised Manuscript: April 3, 2014
Manuscript Accepted: April 6, 2014
Published: April 25, 2014

Citation
Qiuhang Zhong, Zhaobing Tian, Venkat Veerasubramanian, M. Hadi Tavakoli Dastjerdi, Zetian Mi, and David V. Plant, "Thermally controlled coupling of a rolled-up microtube integrated with a waveguide on a silicon electronic-photonic integrated circuit," Opt. Lett. 39, 2699-2702 (2014)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-39-9-2699


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