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Physical observation of single step UV-written integrated planar Bragg structures and their application as refractive-index sensors

Physical observation of single step UV-written integrated planar Bragg structures and their application as refractive-index sensors
Physical observation of single step UV-written integrated planar Bragg structures and their application as refractive-index sensors
We present what is to our knowledge the first demonstration of a potentially low-cost refractive-index sensor based on UV processing. A channel waveguide and a Bragg grating are defined in a single UV processing step, resulting in a buried structure with a well-defined grating period.
A subsequent wet etch process located over the Bragg grating opens a sensing window in the device and reveals the grating structure. Sensitivity of as much as 5×10-6 was inferred from our device.
0003-6935
5042-5045
Emmerson, Gregory D.
479a3828-e993-42d5-9406-45326e6f56be
Gawith, Corin B.E.
926665c0-84c7-4a1d-ae19-ee6d7d14c43e
Sparrow, Ian J.G.
ef0af264-8a21-4380-b082-25db946fd6d2
Williams, Richard B.
c46c705e-6678-4591-8ea0-d25049264d63
Emmerson, Gregory D.
479a3828-e993-42d5-9406-45326e6f56be
Gawith, Corin B.E.
926665c0-84c7-4a1d-ae19-ee6d7d14c43e
Sparrow, Ian J.G.
ef0af264-8a21-4380-b082-25db946fd6d2
Williams, Richard B.
c46c705e-6678-4591-8ea0-d25049264d63

Emmerson, Gregory D., Gawith, Corin B.E., Sparrow, Ian J.G. and Williams, Richard B. (2005) Physical observation of single step UV-written integrated planar Bragg structures and their application as refractive-index sensors. Applied Optics, 44 (24), 5042-5045. (doi:10.1364/AO.44.005042).

Record type: Article

Abstract

We present what is to our knowledge the first demonstration of a potentially low-cost refractive-index sensor based on UV processing. A channel waveguide and a Bragg grating are defined in a single UV processing step, resulting in a buried structure with a well-defined grating period.
A subsequent wet etch process located over the Bragg grating opens a sensing window in the device and reveals the grating structure. Sensitivity of as much as 5×10-6 was inferred from our device.

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Published date: 2005

Identifiers

Local EPrints ID: 30194
URI: https://eprints.soton.ac.uk/id/eprint/30194
ISSN: 0003-6935
PURE UUID: eb15cb2c-687a-446a-83a8-56e484ea43c6
ORCID for Corin B.E. Gawith: ORCID iD orcid.org/0000-0002-3502-3558

Catalogue record

Date deposited: 11 May 2006
Last modified: 20 Jul 2019 01:08

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Contributors

Author: Gregory D. Emmerson
Author: Ian J.G. Sparrow
Author: Richard B. Williams

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