Fiber-integrated phase-change reconfigurable optical attenuator
Fiber-integrated phase-change reconfigurable optical attenuator
We report on the experimental demonstration of an optical-fiber-integrated, non-volatile transmission switching device. The operating mechanism exploits a cavity resonance spectral shift associated with an induced change in the refractive index of a high-index thin film on the polished side facet of the fiber. In the present case, a thermally-induced amorphous-crystalline structural transition in a 500 nm layer of germanium antimony telluride at a distance of 500 nm from the core-cladding interface of an SMF-28 single-mode fiber delivers resonant transmission contrast >0.5 dB/mm at 1315nm. Contrast is a function of active layer proximity to the core, while operating wavelength is determined by layer thickness-varying thickness by a few tens of nanometers can provide for tuning over the entire near-infrared telecoms spectral range.
Martins, Tiago
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Gholipour, Behrad
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Piccinotti, Davide
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MacDonald, Kevin F.
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Peacock, Anna
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Frazão, Orlando
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Zheludev, Nikolai
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November 2019
Martins, Tiago
826b0b69-90f5-4d40-84b7-f661628dbf66
Gholipour, Behrad
c17bd62d-9df6-40e6-bc42-65272d97e559
Piccinotti, Davide
15c6d296-3464-43ec-943a-8155e66d2a51
MacDonald, Kevin F.
76c84116-aad1-4973-b917-7ca63935dba5
Peacock, Anna
685d924c-ef6b-401b-a0bd-acf1f8e758fc
Frazão, Orlando
d54dca12-baf0-44c6-b218-cc9c73fe7d76
Zheludev, Nikolai
32fb6af7-97e4-4d11-bca6-805745e40cc6
Martins, Tiago, Gholipour, Behrad, Piccinotti, Davide, MacDonald, Kevin F., Peacock, Anna, Frazão, Orlando and Zheludev, Nikolai
(2019)
Fiber-integrated phase-change reconfigurable optical attenuator.
APL Photonics, 4, [111301].
(doi:10.1063/1.5116000).
Abstract
We report on the experimental demonstration of an optical-fiber-integrated, non-volatile transmission switching device. The operating mechanism exploits a cavity resonance spectral shift associated with an induced change in the refractive index of a high-index thin film on the polished side facet of the fiber. In the present case, a thermally-induced amorphous-crystalline structural transition in a 500 nm layer of germanium antimony telluride at a distance of 500 nm from the core-cladding interface of an SMF-28 single-mode fiber delivers resonant transmission contrast >0.5 dB/mm at 1315nm. Contrast is a function of active layer proximity to the core, while operating wavelength is determined by layer thickness-varying thickness by a few tens of nanometers can provide for tuning over the entire near-infrared telecoms spectral range.
Text
GST-on-fibre optical switch - accepted manuscript
- Accepted Manuscript
Text
1.5116000
- Version of Record
More information
Accepted/In Press date: 9 October 2019
e-pub ahead of print date: 1 November 2019
Published date: November 2019
Identifiers
Local EPrints ID: 435243
URI: http://eprints.soton.ac.uk/id/eprint/435243
ISSN: 2378-0967
PURE UUID: 247b4eda-f05a-4c1b-9a69-25fa6926ca29
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Date deposited: 28 Oct 2019 17:30
Last modified: 17 Mar 2024 02:56
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Contributors
Author:
Tiago Martins
Author:
Behrad Gholipour
Author:
Davide Piccinotti
Author:
Orlando Frazão
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