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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Vol. 11, Iss. 5 — May. 1, 1986
  • pp: 336–338

Acousto-optic fiber-optic frequency shifter using periodic contact with a copropagating surface acoustic wave

W. P. Risk and G. S. Kino  »View Author Affiliations


Optics Letters, Vol. 11, Issue 5, pp. 336-338 (1986)
http://dx.doi.org/10.1364/OL.11.000336


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Abstract

The phase-matching condition required for efficient acousto-optic polarization coupling limits the operation of some types of fiber-optic frequency shifters to relatively low frequencies (1–2 MHz). Collinear phase matching can occur at higher frequencies if the acoustically induced coupling is made spatially periodic. Using this technique, a frequency shifter operating at 5.6 MHz (2.8 times the usual collinear phase-matching frequency) has been demonstrated. A maximum coupling efficiency of 26% was achieved using 32 W of electrical input power. A 3-dB modulation bandwidth of 110 kHz resulted for the design described here. Unwanted spectral components were suppressed by 24 dB.

© 1986 Optical Society of America

History
Original Manuscript: January 30, 1986
Manuscript Accepted: February 26, 1986
Published: May 1, 1986

Citation
W. P. Risk and G. S. Kino, "Acousto-optic fiber-optic frequency shifter using periodic contact with a copropagating surface acoustic wave," Opt. Lett. 11, 336-338 (1986)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-11-5-336

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