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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 20, Iss. 4 — Feb. 13, 2012
  • pp: 3620–3632

Artificially disordered birefringent optical fibers

S. Herath, N. P. Puente, E. I. Chaikina, and A. Yamilov  »View Author Affiliations


Optics Express, Vol. 20, Issue 4, pp. 3620-3632 (2012)
http://dx.doi.org/10.1364/OE.20.003620


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Abstract

We develop and experimentally verify a theory of evolution of polarization in artificially-disordered multi-mode optical fibers. Starting with a microscopic model of photo-induced index change, we obtain the first and second order statistics of the dielectric tensor in a Ge-doped fiber, where a volume disorder is intentionally inscribed via UV radiation transmitted through a diffuser. A hybrid coupled-power & coupled-mode theory is developed to describe the transient process of de-polarization of light launched into such a fiber. After certain characteristic distance, the power is predicted to be equally distributed over all co-propagating modes of the fiber regardless of their polarization. Polarization-resolved experiments, confirm the predicted evolution of the state of polarization. Complete mode mixing in a segment of fiber as short as ∼ 10cm after 3.6dB insertion loss is experimentally observed. Equal excitation of all modes in such a multi-mode fiber creates the conditions to maximize the information capacity of the system under e.g. multiple-input-multiple-output (MIMO) transmission setup.

© 2012 OSA

OCIS Codes
(060.2310) Fiber optics and optical communications : Fiber optics
(260.1440) Physical optics : Birefringence
(290.4210) Scattering : Multiple scattering
(290.5825) Scattering : Scattering theory

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: December 22, 2011
Revised Manuscript: January 11, 2012
Manuscript Accepted: January 11, 2012
Published: January 30, 2012

Citation
S. Herath, N. P. Puente, E. I. Chaikina, and A. Yamilov, "Artificially disordered birefringent optical fibers," Opt. Express 20, 3620-3632 (2012)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-20-4-3620


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