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Optics Letters

Optics Letters


  • 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)

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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

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

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)

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  1. W. P. Risk, R. C. Youngquist, G. S. Kino, H. J. Shaw, Opt. Lett. 9, 309 (1984). [CrossRef] [PubMed]
  2. S. S. Tarng, I. C. Chang, in Proceedings of the Ultrasonics Symposium (Institute of Electrical and Electronics Engineers, New York, 1985), paper EE-5.
  3. W. P. Risk, G. S. Kino, H. J. Shaw, Opt. Lett. 11, 115 (1986). [CrossRef] [PubMed]
  4. S. E. Miller, Bell Syst. Tech. J. 33, 661, (1954).
  5. C. Lardat, P. Defranould, Proc. IEEE 64, 627 (1976). [CrossRef]

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