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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 15 — Jul. 29, 2013
  • pp: 18582–18591

Spectral broadening in anatase titanium dioxide waveguides at telecommunication and near-visible wavelengths

Christopher C. Evans, Katia Shtyrkova, Jonathan D. B. Bradley, Orad Reshef, Erich Ippen, and Eric Mazur  »View Author Affiliations

Optics Express, Vol. 21, Issue 15, pp. 18582-18591 (2013)

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We observe spectral broadening of femtosecond pulses in single-mode anatase-titanium dioxide (TiO2) waveguides at telecommunication and near-visible wavelengths (1565 and 794 nm). By fitting our data to nonlinear pulse propagation simulations, we quantify nonlinear optical parameters around 1565 nm. Our fitting yields a nonlinear refractive index of 0.16 × 10−18 m2/W, no two-photon absorption, and stimulated Raman scattering from the 144 cm−1 Raman line of anatase with a gain coefficient of 6.6 × 10−12 m/W. Additionally, we report on asymmetric spectral broadening around 794 nm. The wide wavelength applicability and negligible two-photon absorption of TiO2 make it a promising material for integrated photonics.

© 2013 OSA

OCIS Codes
(190.4390) Nonlinear optics : Nonlinear optics, integrated optics
(190.4400) Nonlinear optics : Nonlinear optics, materials
(320.6629) Ultrafast optics : Supercontinuum generation

ToC Category:
Nonlinear Optics

Original Manuscript: June 25, 2013
Revised Manuscript: July 18, 2013
Manuscript Accepted: July 19, 2013
Published: July 26, 2013

Christopher C. Evans, Katia Shtyrkova, Jonathan D. B. Bradley, Orad Reshef, Erich Ippen, and Eric Mazur, "Spectral broadening in anatase titanium dioxide waveguides at telecommunication and near-visible wavelengths," Opt. Express 21, 18582-18591 (2013)

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