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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Vol. 20, Iss. 11 — Jun. 1, 1995
  • pp: 1247–1249

Narrow-band acousto-optic tunable filtering in a two-mode fiber

Dan Östling and Helge E. Engan  »View Author Affiliations


Optics Letters, Vol. 20, Issue 11, pp. 1247-1249 (1995)
http://dx.doi.org/10.1364/OL.20.001247


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Abstract

We demonstrate an optical filter that utilizes acousto-optic coupling between the spatial modes that propagate in a two-mode elliptical-core fiber. The optical bandwidth at 1090 nm is 0.85 nm, which is in agreement with predictions based on measurement of differential group delay between the modes. The filter is slightly polarization dependent, with a 0.28-nm wavelength difference between the passband peaks for the two polarization eigenstates. The optical insertion loss is dominated by 2–4-dB bending loss in nonoptimized mode strippers, and the coupling loss is negligible. Full acousto-optic mode conversion was achieved at an 8-mW electrical input power to the acoustic transducer.

© 1995 Optical Society of America

History
Original Manuscript: January 18, 1995
Published: June 1, 1995

Citation
Dan Östling and Helge E. Engan, "Narrow-band acousto-optic tunable filtering in a two-mode fiber," Opt. Lett. 20, 1247-1249 (1995)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-20-11-1247

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