LiNbO3 optical waveguides formed in a new proton source
Research output: Journal Publications and Reviews (RGC: 21, 22, 62) › 21_Publication in refereed journal › peer-review
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Detail(s)
Original language | English |
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Pages (from-to) | 71-77 |
Journal / Publication | Journal of Lightwave Technology |
Volume | 20 |
Issue number | 1 |
Publication status | Published - Jan 2002 |
Link(s)
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 et al.
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 journal › peer-review