Near-stoichiometric Ti:Sc:LiNbO3 strip waveguide for integrated optics

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

2 Scopus Citations
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Author(s)

  • Xiao-Fei YANG
  • Zi-Bo ZHANG
  • Wan-Ying DU
  • Qun ZHANG
  • Wing-Han WONG
  • Dao-Yin YU
  • De-Long ZHANG

Detail(s)

Original languageEnglish
Pages (from-to)2637-2643
Journal / PublicationOptical Materials Express
Volume6
Issue number8
Online published19 Jul 2016
Publication statusPublished - 1 Aug 2016

Abstract

We demonstrate near-stoichiometric Ti:Sc:LiNbO3 strip waveguide fabrication starting from a congruent LiNbO3 substrate with a technological process in sequence of Sc3+-diffusion-doping, Ti diffusion, and post Li-rich vapor transport equilibration. We show that the waveguide is in a near-stoichiometric composition environment, well supports single-mode propagation at 1.5 μm wavelength under both TE and TM polarizations, shows considerable polarization dependence, and has a loss ≤ 0.4/0.7 dB/cm for TE/TM mode. The Ti4+ surface profile can be fitted by a sum of two error functions, the depth profile can be fitted by a Gaussian function, and the Sc3+-profile part which has a concentration above the threshold of photorefractive damage entirely covers the waveguide, showing that the waveguide is expected to be optical-damage-resistant.

Citation Format(s)

Near-stoichiometric Ti:Sc:LiNbO3 strip waveguide for integrated optics. / YANG, Xiao-Fei; ZHANG, Zi-Bo; DU, Wan-Ying et al.

In: Optical Materials Express, Vol. 6, No. 8, 01.08.2016, p. 2637-2643.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review