All-fiber LP11 mode convertors

We describe two all-fiber devices for converting light from the fundamental mode to the second-order set of modes in optical fibers. The first is made by controlled hole collapse in a photonic crystal fiber, and the second is a twisted fused coupler made from few-moded conventional fiber. As well as...

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Bibliographic Details
Published in:Optics letters 2008-02, Vol.33 (4), p.306-308
Main Authors: WITKOWSKA, A, LEON-SAVAL, S. G, PHAM, A, BIRKS, T. A
Format: Article
Language:English
Subjects:
Applied sciences
Circuit properties
Electric, optical and optoelectronic circuits
Electronics
Exact sciences and technology
Integrated optics. Optical fibers and wave guides
Optical and optoelectronic circuits
Online Access:Get full text
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Summary:We describe two all-fiber devices for converting light from the fundamental mode to the second-order set of modes in optical fibers. The first is made by controlled hole collapse in a photonic crystal fiber, and the second is a twisted fused coupler made from few-moded conventional fiber. As well as having applications within fiber optics, the devices can be used to generate azimuthally polarized free-space beams.
ISSN:0146-9592
1539-4794
DOI:10.1364/OL.33.000306