LiNbO3 optical waveguides formed in a new proton source

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

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Author(s)

  • Vittorio M. N. Passaro
  • Mario N. Armenise
  • Diana Nesheva
  • Ivanka T. Savatinova
  • Edwin Y. B. Pun

Related Research Unit(s)

Detail(s)

Original languageEnglish
Pages (from-to)71-77
Journal / PublicationJournal of Lightwave Technology
Volume20
Issue number1
Publication statusPublished - Jan 2002

Abstract

Proton-exchanged planar waveguides have been fabricated on Z-cut and X-cut lithium niobate crystals by using a new proton source formed by a mixture of benzoic and adipic acids. Waveguide index profiles and optical characteristics have been obtained at different values of the adipic-benzoic acid concentration ratio. The samples have been structurally characterized by Raman and infrared (IR) absorption spectroscopy and double-crystal X-ray diffraction. Good quality samples have been fabricated by using 30 mol% ratio dilution, showing very low scattering levels (33 = 0.88 pm/V), and low relative percentage of interstitial protons (26 %). The main factor limiting the waveguide optical properties is the substitutional-interstitial proton ratio, which can be easily controlled to produce good quality waveguides. A demonstration of the repeatability of the exchange process in the acid mixture is also provided.

Research Area(s)

  • Diffusion processes, Electrooptic measurements, Integrated optics, Lithium compounds, Optical planar waveguides, Optical variables measurement

Citation Format(s)

LiNbO3 optical waveguides formed in a new proton source. / Passaro, Vittorio M. N.; Armenise, Mario N.; Nesheva, Diana; Savatinova, Ivanka T.; Pun, Edwin Y. B.

In: Journal of Lightwave Technology, Vol. 20, No. 1, 01.2002, p. 71-77.

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