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Leakage channel fibers with microstructured cladding elements: a unique LMA platform

Leakage channel fibers with microstructured cladding elements: a unique LMA platform
Leakage channel fibers with microstructured cladding elements: a unique LMA platform
We present a novel design of leakage channel fiber (LCF) that incorporates an air-hole lattice to define the modal filtering characteristics. The approach has the potential to offer single-mode, large mode area (LMA) fibers in a single-material platform with bend loss characteristics comparable to all-solid (LCFs) whilst at the same time providing significant fabrication benefits. We compare the performance of the proposed fiber with that of rod-type photonic crystal fibers (PCFs) and all-solid LCFs offering a similar effective mode area of ~1600µm2 at 1.05µm. Our calculations show that the proposed fiber concept succeeds in combining the advantages of the use of small air holes and the larger design space of rod-type PCFs with the improved bend tolerance and greater higher order mode discrimination of all-solid LCFs, while alleviating their respective issues of rigidity and restricted material design space. We report the fabrication and experimental characterization of a first exemplar fiber, which we demonstrate offers a single-mode output with a fundamental mode area ~1440µm2 at 1.06µm, and that can be bent down to a radius of 20cm with a bend loss of <3dB/turn. Finally we show that the proposed design concept can be adopted to achieve larger mode areas (> 3000µm2), albeit at the expense of reduced bend tolerance.
1094-4087
8574-8584
Dasgupta, Sonali
43e5e81a-3da3-4ba5-a5f4-2abe6301fc71
Hayes, John R.
a6d3acd6-d7d5-4614-970e-0e8c594e48e2
Richardson, David J.
ebfe1ff9-d0c2-4e52-b7ae-c1b13bccdef3
Dasgupta, Sonali
43e5e81a-3da3-4ba5-a5f4-2abe6301fc71
Hayes, John R.
a6d3acd6-d7d5-4614-970e-0e8c594e48e2
Richardson, David J.
ebfe1ff9-d0c2-4e52-b7ae-c1b13bccdef3

Dasgupta, Sonali, Hayes, John R. and Richardson, David J. (2014) Leakage channel fibers with microstructured cladding elements: a unique LMA platform. Optics Express, 22 (7), 8574-8584. (doi:10.1364/OE.22.008574).

Record type: Article

Abstract

We present a novel design of leakage channel fiber (LCF) that incorporates an air-hole lattice to define the modal filtering characteristics. The approach has the potential to offer single-mode, large mode area (LMA) fibers in a single-material platform with bend loss characteristics comparable to all-solid (LCFs) whilst at the same time providing significant fabrication benefits. We compare the performance of the proposed fiber with that of rod-type photonic crystal fibers (PCFs) and all-solid LCFs offering a similar effective mode area of ~1600µm2 at 1.05µm. Our calculations show that the proposed fiber concept succeeds in combining the advantages of the use of small air holes and the larger design space of rod-type PCFs with the improved bend tolerance and greater higher order mode discrimination of all-solid LCFs, while alleviating their respective issues of rigidity and restricted material design space. We report the fabrication and experimental characterization of a first exemplar fiber, which we demonstrate offers a single-mode output with a fundamental mode area ~1440µm2 at 1.06µm, and that can be bent down to a radius of 20cm with a bend loss of <3dB/turn. Finally we show that the proposed design concept can be adopted to achieve larger mode areas (> 3000µm2), albeit at the expense of reduced bend tolerance.

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e-pub ahead of print date: 3 April 2014
Published date: 7 April 2014
Organisations: Optoelectronics Research Centre

Identifiers

Local EPrints ID: 364132
URI: http://eprints.soton.ac.uk/id/eprint/364132
ISSN: 1094-4087
PURE UUID: 24b52fc2-d4c5-429b-b895-1a2bd94fa5a9
ORCID for David J. Richardson: ORCID iD orcid.org/0000-0002-7751-1058

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Date deposited: 07 Apr 2014 10:30
Last modified: 15 Mar 2024 02:41

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Contributors

Author: Sonali Dasgupta
Author: John R. Hayes

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