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Highly-chirped Bragg gratings for integrated silica spectrometers

Highly-chirped Bragg gratings for integrated silica spectrometers
Highly-chirped Bragg gratings for integrated silica spectrometers
A blazed chirped Bragg grating in a planar silica waveguide device was used to create an integrated diffractive element for a spectrometer. The grating diffracts light from a waveguide and creates a wavelength dependent focus in a manner similar to a bulk diffraction grating spectrometer. An external imaging system is used to analyse the light, later device iterations plan to integrate detectors to make a fully integrated spectrometer. Devices were fabricated with grating period chirp rates in excess of 100nm/mm, achieving a focal length of 5.5 mm. Correction of coma aberrations resulted in a device with a footprint of 20 mm x 10mm, a peak FWHM resolution of 1.8 nm, a typical FWHM resolution of 2.6 nm and operating with a 160 nm bandwidth centered at 1550 nm.
1094-4087
21247-21259
Field, James
df955b32-3fe1-4aca-866f-95603a4c70f7
Berry, Sam A
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Bannerman, Rex
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Smith, Devin
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Gawith, Corin
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Smith, Peter G.R.
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Gates, James
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Field, James
df955b32-3fe1-4aca-866f-95603a4c70f7
Berry, Sam A
0f768f48-36c4-4599-8917-7aae657378a7
Bannerman, Rex
7f7d5c3e-8e5d-45d5-8fd7-8d1511330e08
Smith, Devin
49156a41-41f1-4f1b-8ce3-ef6f894e190c
Gawith, Corin
926665c0-84c7-4a1d-ae19-ee6d7d14c43e
Smith, Peter G.R.
8979668a-8b7a-4838-9a74-1a7cfc6665f6
Gates, James
b71e31a1-8caa-477e-8556-b64f6cae0dc2

Field, James, Berry, Sam A, Bannerman, Rex, Smith, Devin, Gawith, Corin, Smith, Peter G.R. and Gates, James (2020) Highly-chirped Bragg gratings for integrated silica spectrometers. Optics Express, 28 (14), 21247-21259. (doi:10.1364/OE.389211).

Record type: Article

Abstract

A blazed chirped Bragg grating in a planar silica waveguide device was used to create an integrated diffractive element for a spectrometer. The grating diffracts light from a waveguide and creates a wavelength dependent focus in a manner similar to a bulk diffraction grating spectrometer. An external imaging system is used to analyse the light, later device iterations plan to integrate detectors to make a fully integrated spectrometer. Devices were fabricated with grating period chirp rates in excess of 100nm/mm, achieving a focal length of 5.5 mm. Correction of coma aberrations resulted in a device with a footprint of 20 mm x 10mm, a peak FWHM resolution of 1.8 nm, a typical FWHM resolution of 2.6 nm and operating with a 160 nm bandwidth centered at 1550 nm.

Text
J FIELD Highly Chirped Bragg Gratings for Integrated Silica Spectrometers - Accepted Manuscript
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More information

Accepted/In Press date: 13 May 2020
e-pub ahead of print date: 2 July 2020
Published date: 6 July 2020

Identifiers

Local EPrints ID: 440970
URI: http://eprints.soton.ac.uk/id/eprint/440970
ISSN: 1094-4087
PURE UUID: d1f8abd6-2a89-4d72-ba57-f27c4b496681
ORCID for James Field: ORCID iD orcid.org/0000-0002-0985-6062
ORCID for Sam A Berry: ORCID iD orcid.org/0000-0002-9538-8655
ORCID for Corin Gawith: ORCID iD orcid.org/0000-0002-3502-3558
ORCID for Peter G.R. Smith: ORCID iD orcid.org/0000-0003-0319-718X
ORCID for James Gates: ORCID iD orcid.org/0000-0001-8671-5987

Catalogue record

Date deposited: 26 May 2020 16:31
Last modified: 18 Feb 2021 17:29

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