journal article·2018-11

Demonstration of wide frequency bandwidth electro-optic response in SBN thin film waveguide

Surbhi Gupta, Ayushi Paliwal, Ruyan Guo, Amar S. Bhalla, Vinay Gupta, Monika Tomar

Optical Materials· Volume 85
Publisher page

Abstract

Abstract The dynamic modulation of effective electro-optic (EO) coefficient in pulsed laser deposited SBN thin film was investigated using Senarmont Compensation method. Prism coupling technique was used to realize a waveguide to guide the light in SBN thin film. The dynamic variation of effective electro-optic coefficient over a wide frequency range (10 Hz–20 MHz) was investigated with the maximum value of 198 pm/V. This wide frequency bandwidth obtained in the present article opens up avenues to design an EO modulator using ferroelectric SBN thin film. A lower value of half wave voltage (38 V) along with high figure of merit ( 0.9 × 10 6 V 2 ) were obtained for the fabricated SBN60 thin film based EO modulator.
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Research context

OpenAlex topics: Photorefractive and Nonlinear Optics · Acoustic Wave Resonator Technologies · Nonlinear Optical Materials Research

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