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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Vol. 11, Iss. 12 — Dec. 1, 1986
  • pp: 818–820

Electro-optic cutoff modulator using a Ti-indiffused LiNbO3 channel waveguide with asymmetric strip electrodes

Kuniharu Takizawa  »View Author Affiliations


Optics Letters, Vol. 11, Issue 12, pp. 818-820 (1986)
http://dx.doi.org/10.1364/OL.11.000818


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Abstract

A new type of cutoff light modulator, which consists of a single-mode channel waveguide and strip electrodes placed asymmetrically on either side of the guide, is proposed. When a voltage is applied to the electrodes, this device exhibits an asymmetric refractive-index profile along a direction parallel to the crystal surface through the electro-optic effect. This produces a strong condition for cutoff of the fundamental mode of the guide. An ultrahigh extinction ratio of greater than 56 dB has been achieved by using a Ti-indiffused Y-cut LiNbO3 cutoff modulator with a 165-V drive at a wavelength of 0.6328 μm.

© 1986 Optical Society of America

History
Original Manuscript: April 17, 1986
Manuscript Accepted: September 24, 1986
Published: December 1, 1986

Citation
Kuniharu Takizawa, "Electro-optic cutoff modulator using a Ti-indiffused LiNbO3 channel waveguide with asymmetric strip electrodes," Opt. Lett. 11, 818-820 (1986)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-11-12-818

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