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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 17, Iss. 11 — May. 25, 2009
  • pp: 9347–9356

Complete modal decomposition for optical fibers using CGH-based correlation filters

Thomas Kaiser, Daniel Flamm, Siegmund Schröter, and Michael Duparré  »View Author Affiliations

Optics Express, Vol. 17, Issue 11, pp. 9347-9356 (2009)

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The description of optical fields in terms of their eigenmodes is an intuitive approach for beam characterization. However, there is a lack of unambiguous, pure experimental methods in contrast to numerical phase-retrieval routines, mainly because of the difficulty to characterize the phase structure properly, e.g. if it contains singularities. This paper presents novel results for the complete modal decomposition of optical fields by using computer-generated holographic filters. The suitability of this method is proven by reconstructing various fields emerging from a weakly multi-mode fiber (V ≈ 5) with arbitrary mode contents. Advantages of this approach are its mathematical uniqueness and its experimental simplicity. The method constitutes a promising technique for real-time beam characterization, even for singular beam profiles.

© 2009 Optical Society of America

OCIS Codes
(060.2270) Fiber optics and optical communications : Fiber characterization
(090.1970) Holography : Diffractive optics
(090.2890) Holography : Holographic optical elements
(120.3940) Instrumentation, measurement, and metrology : Metrology
(140.3295) Lasers and laser optics : Laser beam characterization

ToC Category:

Original Manuscript: March 30, 2009
Revised Manuscript: May 13, 2009
Manuscript Accepted: May 13, 2009
Published: May 19, 2009

Thomas Kaiser, Daniel Flamm, Siegmund Schröter, and Michael Duparré, "Complete modal decomposition for optical fibers using CGH-based correlation filters," Opt. Express 17, 9347-9356 (2009)

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