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Broadband single-mode operation of standard optical fibers by using a sub-wavelength optical wire filter

Broadband single-mode operation of standard optical fibers by using a sub-wavelength optical wire filter
Broadband single-mode operation of standard optical fibers by using a sub-wavelength optical wire filter
We report the use of a sub-wavelength optical wire (SOW) with a specifically designed transition region as an efficient tool to filter higher order modes in multimode waveguides. Higher-order modes are effectively suppressed by controlling the transition taper profile and the diameter of the sub-wavelength optical wire. As a practical example, single-mode operation of a standard telecom optical fiber over a broad spectral window (400~1700 nm) was demonstrated with a 1µm SOW. The ability to obtain robust and stable single-mode operation over a very broad range of wavelengths offers new possibilities for mode control within fiber devices and is relevant to a range of application sectors including high performance fiber lasers, sensors, photolithography, and optical coherence tomography systems.
1094-4087
14661-14667
Jung, Yongmin
6685e51e-be47-4c96-8c4b-65aee3b5126d
Brambilla, Gilberto
815d9712-62c7-47d1-8860-9451a363a6c8
Richardson, David J.
ebfe1ff9-d0c2-4e52-b7ae-c1b13bccdef3
Jung, Yongmin
6685e51e-be47-4c96-8c4b-65aee3b5126d
Brambilla, Gilberto
815d9712-62c7-47d1-8860-9451a363a6c8
Richardson, David J.
ebfe1ff9-d0c2-4e52-b7ae-c1b13bccdef3

Jung, Yongmin, Brambilla, Gilberto and Richardson, David J. (2008) Broadband single-mode operation of standard optical fibers by using a sub-wavelength optical wire filter. Optics Express, 16 (19), 14661-14667. (doi:10.1364/OE.16.014661).

Record type: Article

Abstract

We report the use of a sub-wavelength optical wire (SOW) with a specifically designed transition region as an efficient tool to filter higher order modes in multimode waveguides. Higher-order modes are effectively suppressed by controlling the transition taper profile and the diameter of the sub-wavelength optical wire. As a practical example, single-mode operation of a standard telecom optical fiber over a broad spectral window (400~1700 nm) was demonstrated with a 1µm SOW. The ability to obtain robust and stable single-mode operation over a very broad range of wavelengths offers new possibilities for mode control within fiber devices and is relevant to a range of application sectors including high performance fiber lasers, sensors, photolithography, and optical coherence tomography systems.

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Published date: 3 September 2008

Identifiers

Local EPrints ID: 65474
URI: https://eprints.soton.ac.uk/id/eprint/65474
ISSN: 1094-4087
PURE UUID: 0ddbc1ef-10a9-42aa-b519-0fd4e931a3d5
ORCID for David J. Richardson: ORCID iD orcid.org/0000-0002-7751-1058

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Date deposited: 17 Feb 2009
Last modified: 10 Dec 2019 01:57

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