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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Vol. 20, Iss. 10 — May. 15, 1995
  • pp: 1125–1127

Photorefractive spatial mode converter for multimode-to-single-mode fiber-optic coupling

Arthur Chiou, Pochi Yeh, Changxi Yang, and Claire Gu  »View Author Affiliations


Optics Letters, Vol. 20, Issue 10, pp. 1125-1127 (1995)
http://dx.doi.org/10.1364/OL.20.001125


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Abstract

We report what is to our knowledge the first experimental demonstration of a photorefractive spatial mode converter (based on mutually pumped phase conjugation) that couples light efficiently from a multimode fiber into a single-mode fiber with an extremely large degree of tolerance to misalignment. Using an argon laser (514.5 nm) and a barium titanate crystal, we have demonstrated that the laser light can be coupled from a multimode fiber (core diameter 100 μm, numerical aperture 0.37) into a single-mode fiber (core diameter 2.9 μm, numerical aperture 0.11), with an efficiency of ~15% and an alignment tolerance of ~100 μm. The coupling efficiency is more than 2 orders of magnitude, and the tolerance to misalignments is more than 30 times better than the corresponding values achievable by conventional techniques.

© 1995 Optical Society of America

History
Original Manuscript: December 19, 1994
Published: May 15, 1995

Citation
Arthur Chiou, Pochi Yeh, Claire Gu, and Changxi Yang, "Photorefractive spatial mode converter for multimode-to-single-mode fiber-optic coupling," Opt. Lett. 20, 1125-1127 (1995)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-20-10-1125

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