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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 23, Iss. 1 — Jan. 1, 1984
  • pp: 118–123

Light intensity modulation based on guided-to-radiation mode coupling in heterostructure waveguides

Hidetoshi Onodera, Ikuo Awai, Masamitsu Nakajima, and Junichi Ikenoue  »View Author Affiliations


Applied Optics, Vol. 23, Issue 1, pp. 118-123 (1984)
http://dx.doi.org/10.1364/AO.23.000118


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Abstract

The performance of light intensity modulation using guided-to-radiation mode coupling through the electrooptic effect is investigated theoretically and experimentally. We show that high modulation efficiency is obtainable if a heterostructure waveguide is employed that has appropriate refractive indices to bring forth large field overlap of the two coupled modes. Waveguides of Nb2O5 or Li(Nb0.1Ta0.9)O3 film on a structure could have modulation efficiency of more than 100 dB/cm. The experiment was LiTaO3 substrate carried out in a Nb2O5–LiTaO3 structure fabricated by rf reactive sputtering, and we obtained the measured modulation depth as high as 45 dB/cm at an applied voltage of 400 V across 55-μm gap electrodes.

© 1984 Optical Society of America

History
Original Manuscript: September 17, 1983
Published: January 1, 1984

Citation
Hidetoshi Onodera, Ikuo Awai, Masamitsu Nakajima, and Junichi Ikenoue, "Light intensity modulation based on guided-to-radiation mode coupling in heterostructure waveguides," Appl. Opt. 23, 118-123 (1984)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-23-1-118

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