All-optical signal processing using planar Bragg gratings
All-optical signal processing using planar Bragg gratings
The fabrication techniques of Bragg gratings broadly fall into two categories: that are holographic, and that are non-interferometric, based on the periodical UV radiation along the photosensitive medium. The fabrication technique in this work is the direct UV grating writing (DGW). This method involves focusing two crossed laser beams (lambda=244nm) into a photosensitive core layer. Precise translation of the sample and modulation of the interference pattern define the channel waveguide and simultaneously create grating structures, shown in Figure 1. First developed at Optoelectronics Research Centre in 2002, it has similarities to the UV writing techniques used for fiber Bragg grating inscription. Advanced grating properties such as chirp, phase shifts, and apodisation are introduced by adjusting the laser intensity and the translating speed.
Sima, C.
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Gates, J.C.
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Snow, B.D.
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Rogers, H.L.
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Holmes, C.
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Zervas, M.N.
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Smith, P.G.R.
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Sima, C.
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Gates, J.C.
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Snow, B.D.
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Rogers, H.L.
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Holmes, C.
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Zervas, M.N.
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Smith, P.G.R.
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Sima, C., Gates, J.C., Snow, B.D., Rogers, H.L., Holmes, C., Zervas, M.N. and Smith, P.G.R.
(2011)
All-optical signal processing using planar Bragg gratings.
Photonics and Optoelectronics Meeting (POEM 2011), Wuhan, China.
02 - 05 Nov 2011.
(doi:10.1117/12.919071).
Record type:
Conference or Workshop Item
(Paper)
Abstract
The fabrication techniques of Bragg gratings broadly fall into two categories: that are holographic, and that are non-interferometric, based on the periodical UV radiation along the photosensitive medium. The fabrication technique in this work is the direct UV grating writing (DGW). This method involves focusing two crossed laser beams (lambda=244nm) into a photosensitive core layer. Precise translation of the sample and modulation of the interference pattern define the channel waveguide and simultaneously create grating structures, shown in Figure 1. First developed at Optoelectronics Research Centre in 2002, it has similarities to the UV writing techniques used for fiber Bragg grating inscription. Advanced grating properties such as chirp, phase shifts, and apodisation are introduced by adjusting the laser intensity and the translating speed.
More information
e-pub ahead of print date: 2011
Venue - Dates:
Photonics and Optoelectronics Meeting (POEM 2011), Wuhan, China, 2011-11-02 - 2011-11-05
Organisations:
Optoelectronics Research Centre, Physics & Astronomy, Electronics & Computer Science
Identifiers
Local EPrints ID: 336431
URI: http://eprints.soton.ac.uk/id/eprint/336431
PURE UUID: e40206e3-3419-4c01-84f6-106d2b40a6e6
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Date deposited: 28 Mar 2012 10:12
Last modified: 15 Mar 2024 03:27
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Contributors
Author:
C. Sima
Author:
B.D. Snow
Author:
H.L. Rogers
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