Acousto-Optic Modulator Driven by Surface Acoustic Waves

• Authors: S. Kakio
• Languages of publication: EN

Abstracts

EN

In this paper, an introduction to the design, fabrication, evaluation, and application of acousto-optic modulators using the Bragg diffraction of an optical guided wave in a channel optical waveguide due to a surface acoustic wave is provided. First, the surface acoustic wave mode dependence in the acousto-optic Bragg diffraction was discussed by considering the surface acoustic wave power required for the maximum diffraction P_{{100}} calculated using coupled mode theory and the measured P_{{100}} in Ti-diffused planar optical waveguides fabricated on LiNbO_{{3}} substrates. Next, performances of several devices that the author and the coworkers developed are reviewed. These include a waveguide-type acousto-optic modulator using a tapered crossed-channel proton-exchanged optical waveguide on a 128°-rotated Y-cut LiNbO_{{3}} substrate for an optical wavelength of 1.55 μm, a monolithically integrated tandem acousto-optic modulator in which several waveguide-type acousto-optic modulators are connected in tandem on the same substrate, and a waveguide-type acousto-optic modulator in which laser lights of the three primary colors, red, green, and blue, can be modulated by the same modulator at the same driving frequency.

Keywords

EN

42.79.Jq; 43.35.Sx; 78.20.Hp; 78.20.hb

Discipline

• 78.20.hb: Piezo-optical, elasto-optical, acousto-optical, and photoelastic effects(see also 43.35.Sx Acousto-optical effects, optoacoustics, acoustical visualization, acoustical microscopy, and acoustical holography—in Acoustics Appendix; for acousto-optical devices, see 42.79.Jq, and 43.38.Zp—in Acoustics Appendix)
• 42.79.Jq: Acousto-optical devices(see also 43.38.Zp—in Acoustics Appendix)

• Journal: Acta Physica Polonica A
• Year: 2015
• Volume: 127
• Issue: 1
• Pages: 15-19

Dates

published

2015-01

Contributors

author

S. Kakio

• Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi, Kofu 400-8511, Japan

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Identifiers

DOI

10.12693/APhysPolA.127.15