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Journal of the Optical Society of America B

Journal of the Optical Society of America B


  • Editor: Grover Swartzlander
  • Vol. 30, Iss. 5 — May. 1, 2013
  • pp: 1357–1367

Nonlinear multimodal interference and saturable absorption using a short graded-index multimode optical fiber

Elham Nazemosadat and Arash Mafi  »View Author Affiliations

JOSA B, Vol. 30, Issue 5, pp. 1357-1367 (2013)

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A detailed investigation of the nonlinear multimodal interference in a short graded-index multimode optical fiber is presented. The analysis is performed for a specific device geometry, where the light is coupled in and out of the multimode fiber via single-mode fibers. The same device geometry was recently used to obtain ultra-low-loss coupling between two single-mode optical fibers with very different mode-field diameters. Our results indicate the potential application of this simple geometry for nonlinear devices, such as in nonlinear switching, optical signal processing, or as saturable absorbers in mode-locked fiber lasers. Saturable absorption in this all-fiber configuration is discussed and it is shown that it provides attractive properties that can potentially be used in high pulse energy mode-locked fiber lasers.

© 2013 Optical Society of America

OCIS Codes
(060.2310) Fiber optics and optical communications : Fiber optics
(060.7140) Fiber optics and optical communications : Ultrafast processes in fibers
(190.4370) Nonlinear optics : Nonlinear optics, fibers

ToC Category:
Nonlinear Optics

Original Manuscript: February 15, 2013
Revised Manuscript: April 5, 2013
Manuscript Accepted: April 5, 2013
Published: April 26, 2013

Elham Nazemosadat and Arash Mafi, "Nonlinear multimodal interference and saturable absorption using a short graded-index multimode optical fiber," J. Opt. Soc. Am. B 30, 1357-1367 (2013)

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