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Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 34, Iss. 3 — Feb. 1, 2009
  • pp: 229–231

Laser beam shaping using a single-mode fiber abrupt taper

Zhaobing Tian, Michael Nix, and Scott S-H. Yam  »View Author Affiliations


Optics Letters, Vol. 34, Issue 3, pp. 229-231 (2009)
http://dx.doi.org/10.1364/OL.34.000229


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Abstract

A new beam-shaping device was realized by an abrupt taper with a length of 700 μ m and a waist of 40 μ m . The insertion loss of the device is less than 3%. The diameter of the flat beam top can be up to 900 μ m with a small intensity variation (4%) and a small half-divergence angle (2.5°). The conversion efficiency of the new device from a Gaussian-shaped to a flat-top profile is comparable with that of a long-period-gratings-based device, while keeping the fabrication cost low. The new device requires only a fusion splicer and standard SMF-28 fiber, eliminating the need for photolithographic procedures. The new device also has no obvious incident light polarization dependence.

© 2009 Optical Society of America

OCIS Codes
(060.2310) Fiber optics and optical communications : Fiber optics
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(130.3120) Integrated optics : Integrated optics devices

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: September 15, 2008
Revised Manuscript: November 29, 2008
Manuscript Accepted: December 5, 2008
Published: January 21, 2009

Citation
Zhaobing Tian, Michael Nix, and Scott S-H. Yam, "Laser beam shaping using a single-mode fiber abrupt taper," Opt. Lett. 34, 229-231 (2009)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-34-3-229


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References

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