Electro-optic phase modulation in ridge waveguides of epitaxial K_0.95Na_0.05Ta_0.71Nb_0.29O_3 thin films | Zendy

Christian Herzog | Zendy; Steffen Reidt | Zendy; G. Poberaj | Zendy; Peter Günter | Zendy

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Electro-optic phase modulation in ridge waveguides of epitaxial K_0.95Na_0.05Ta_0.71Nb_0.29O_3 thin films

Author(s) -

Christian Herzog,

Steffen Reidt,

G. Poberaj,

Peter Günter

Publication year - 2007

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.15.007642

Subject(s) - tantalate , optics , materials science , refractive index , thin film , figure of merit , phase modulation , lithium tantalate , epitaxy , modulation (music) , phase (matter) , crystal (programming language) , optoelectronics , dielectric , ferroelectricity , lithium niobate , physics , layer (electronics) , phase noise , acoustics , computer science , composite material , programming language , nanotechnology , quantum mechanics

Electro-optic modulation at lambda=1.5 mum has been demonstrated for the first time to the best of our knowledge in a ridge waveguide phase modulator produced in cubic potassium sodium tantalate niobate thin films epitaxially grown on potassium tantalate substrates exploiting the large quadratic electro-optic Kerr coefficient of R11 = 8.2x10(-17) m(2)/V(2). The relative permittivity, Kerr coefficient, and refractive index have been evaluated for the thin film crystal and are compared to the values measured in bulk crystals. The half-wave voltage times length figure of merit of the modulator has been measured to be Vpil=38 Vcm at room temperature.

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