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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Vol. 19, Iss. 23 — Dec. 1, 1994
  • pp: 1964–1966

Four-port fiber frequency shifter with a null taper coupler

T. A. Birks, S. G. Farwell, P. St. J. Russell, and C. N. Pannell  »View Author Affiliations


Optics Letters, Vol. 19, Issue 23, pp. 1964-1966 (1994)
http://dx.doi.org/10.1364/OL.19.001964


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Abstract

A prototype of a new design of fiber frequency shifter, based on a special four-port fused taper coupler with a null maximum coupling ratio, is reported. In this coupler the constituent fibers are so dissimilar that the maximum coupling is (ideally) zero. In the presence of a flexural acoustic wave, light is coupled between the fibers, acquiring a frequency shift in the process. Near 100% conversion with 30-dB sideband and carrier suppression is achieved, in an unoptimized device, for just 1 mW of electrical drive power.

© 1994 Optical Society of America

History
Original Manuscript: March 10, 1994
Published: December 1, 1994

Citation
T. A. Birks, S. G. Farwell, P. St. J. Russell, and C. N. Pannell, "Four-port fiber frequency shifter with a null taper coupler," Opt. Lett. 19, 1964-1966 (1994)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-19-23-1964

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