Designing silicon-core fiber tapers for efficient supercontinuum generation in the greenhouse gas absorption region
Designing silicon-core fiber tapers for efficient supercontinuum generation in the greenhouse gas absorption region
We propose a tapered silicon-core optical fiber design for extending the long-wavelength edge of supercontinuum generation to obtain a high spectral density source across the 3-4.5 µm regime. The taper works by generating sufficient spectral broadening of the driving laser pulse to produce a series of pumps for nondegenerate four-wave mixing, and then opening up new phase-matching conditions to transfer the power from these pumps to a target region of mid-infrared wavelengths. We show, by simulation, that this taper design works effectively when pumped with a conventional 2.1 µm femtosecond fiber laser, significantly improving the spectral coverage obtained with a fixed-diameter fiber. Thus, these tapered silicon-core fibers offer a potential platform for an efficient all-fiber spectroscopy solution to measure greenhouse gases.
Four-wave mixing, fiber tapers, mid-infrared, nonlinear optics, optical fibers, silicon, supercontinuum
1698-1706
Campling, Joseph
daeaf1d9-ff3c-4efd-a618-3a248b79e7f5
Horak, Peter
520489b5-ccc7-4d29-bb30-c1e36436ea03
Peacock, Anna C.
685d924c-ef6b-401b-a0bd-acf1f8e758fc
1 June 2020
Campling, Joseph
daeaf1d9-ff3c-4efd-a618-3a248b79e7f5
Horak, Peter
520489b5-ccc7-4d29-bb30-c1e36436ea03
Peacock, Anna C.
685d924c-ef6b-401b-a0bd-acf1f8e758fc
Campling, Joseph, Horak, Peter and Peacock, Anna C.
(2020)
Designing silicon-core fiber tapers for efficient supercontinuum generation in the greenhouse gas absorption region.
Journal of the Optical Society of America B: Optical Physics, 37 (6), .
(doi:10.1364/JOSAB.392346).
Abstract
We propose a tapered silicon-core optical fiber design for extending the long-wavelength edge of supercontinuum generation to obtain a high spectral density source across the 3-4.5 µm regime. The taper works by generating sufficient spectral broadening of the driving laser pulse to produce a series of pumps for nondegenerate four-wave mixing, and then opening up new phase-matching conditions to transfer the power from these pumps to a target region of mid-infrared wavelengths. We show, by simulation, that this taper design works effectively when pumped with a conventional 2.1 µm femtosecond fiber laser, significantly improving the spectral coverage obtained with a fixed-diameter fiber. Thus, these tapered silicon-core fibers offer a potential platform for an efficient all-fiber spectroscopy solution to measure greenhouse gases.
Text
Accepted_manuscript
- Accepted Manuscript
More information
Accepted/In Press date: 21 April 2020
e-pub ahead of print date: 18 May 2020
Published date: 1 June 2020
Additional Information:
Funding Information:
Engineering and Physical Sciences Research Council (EP/P000940/1).
Publisher Copyright:
© 2020 Optical Society of America.
Keywords:
Four-wave mixing, fiber tapers, mid-infrared, nonlinear optics, optical fibers, silicon, supercontinuum
Identifiers
Local EPrints ID: 440908
URI: http://eprints.soton.ac.uk/id/eprint/440908
ISSN: 0740-3224
PURE UUID: 1fbff8bf-7bb1-42ec-ba35-e041edae5f68
Catalogue record
Date deposited: 22 May 2020 16:37
Last modified: 17 Mar 2024 05:31
Export record
Altmetrics
Contributors
Author:
Joseph Campling
Author:
Peter Horak
Author:
Anna C. Peacock
Download statistics
Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.
View more statistics