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Optics Letters

Optics Letters


  • Vol. 36, Iss. 20 — Oct. 15, 2011
  • pp: 3981–3983

Experimental investigation of thermo-optic effects in SiC and Si photonic crystal nanocavities

Shota Yamada, Bong-Shik Song, Takashi Asano, and Susumu Noda  »View Author Affiliations

Optics Letters, Vol. 36, Issue 20, pp. 3981-3983 (2011)

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We experimentally investigate and compare the thermo-optic effects of silicon carbide (SiC) and silicon (Si) photonic crystal nanocavities on their resonant wavelengths over a temperature range of 25 ° C to nearly 200 ° C by using a laser source with a wavelength close to the telecommunication wavelength range of 1550 nm . The measured results clearly show that the shift in the resonant wavelength of the SiC cavity is significantly (by a factor of 3) less than that of the Si cavity for the same ambient temperature changes. In addition, the measured results provide direct estimates of the thermo-optic coefficients ( d n / d T ) for thin SiC and Si as 3.87 × 10 5 / ° C and 1.60 × 10 4 / ° C , respectively, for this temperature range.

© 2011 Optical Society of America

OCIS Codes
(120.6810) Instrumentation, measurement, and metrology : Thermal effects
(160.2750) Materials : Glass and other amorphous materials
(230.5750) Optical devices : Resonators
(230.5298) Optical devices : Photonic crystals

ToC Category:
Optical Devices

Original Manuscript: August 16, 2011
Revised Manuscript: September 14, 2011
Manuscript Accepted: September 14, 2011
Published: October 5, 2011

Shota Yamada, Bong-Shik Song, Takashi Asano, and Susumu Noda, "Experimental investigation of thermo-optic effects in SiC and Si photonic crystal nanocavities," Opt. Lett. 36, 3981-3983 (2011)

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