Optical fibers as beam shapers: From Gaussian beams to optical vortices

Rita S. Rodrigues Ribeiro; Pabitra Dahal; Ariel Guerreiro; Pedro Jorge; Jaime Viegas

doi:10.1364/OL.41.002137

Optical fibers as beam shapers: From Gaussian beams to optical vortices

Rita S. Rodrigues Ribeiro, Pabitra Dahal, Ariel Guerreiro, Pedro Jorge, Jaime Viegas

Electrical Engineering

INESC Porto

Research output: Contribution to journal › Article › peer-review

36 Scopus citations

Abstract

This Letter reports a new method for the generation of optical vortices using a micropatterned optical fiber tip. Here, a spiral phase plate (2? phase shift) is micromachined on the tip of an optical fiber using a focused ion beam. This is a high resolution method that allows milling the fibers with nanoscale resolution. The plate acts as a beam tailoring system, transforming the fundamental guided mode, specifically a Gaussian mode, into the Laguerre-Gaussian mode (LG01 ), which carries orbital angular momentum. The experimental results are supported by computational simulations based on the finite-difference time-domain method.

Original language	British English
Pages (from-to)	2137-2140
Number of pages	4
Journal	Optics Letters
Volume	41
Issue number	10
DOIs	https://doi.org/10.1364/OL.41.002137
State	Published - 15 May 2016

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title = "Optical fibers as beam shapers: From Gaussian beams to optical vortices",

abstract = "This Letter reports a new method for the generation of optical vortices using a micropatterned optical fiber tip. Here, a spiral phase plate (2? phase shift) is micromachined on the tip of an optical fiber using a focused ion beam. This is a high resolution method that allows milling the fibers with nanoscale resolution. The plate acts as a beam tailoring system, transforming the fundamental guided mode, specifically a Gaussian mode, into the Laguerre-Gaussian mode (LG01 ), which carries orbital angular momentum. The experimental results are supported by computational simulations based on the finite-difference time-domain method.",

author = "{Rodrigues Ribeiro}, {Rita S.} and Pabitra Dahal and Ariel Guerreiro and Pedro Jorge and Jaime Viegas",

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AU - Rodrigues Ribeiro, Rita S.

AU - Dahal, Pabitra

AU - Guerreiro, Ariel

AU - Jorge, Pedro

AU - Viegas, Jaime

PY - 2016/5/15

Y1 - 2016/5/15

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AB - This Letter reports a new method for the generation of optical vortices using a micropatterned optical fiber tip. Here, a spiral phase plate (2? phase shift) is micromachined on the tip of an optical fiber using a focused ion beam. This is a high resolution method that allows milling the fibers with nanoscale resolution. The plate acts as a beam tailoring system, transforming the fundamental guided mode, specifically a Gaussian mode, into the Laguerre-Gaussian mode (LG01 ), which carries orbital angular momentum. The experimental results are supported by computational simulations based on the finite-difference time-domain method.

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Optical fibers as beam shapers: From Gaussian beams to optical vortices

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