Anomalous spectral behaviour of weakly-fused optical fibre couplers with sub-micron diameters
Anomalous spectral behaviour of weakly-fused optical fibre couplers with sub-micron diameters
Weakly-fused optical fibre couplers can be simplified as a system of two optical fibre tapers, which are often called nanofibers when having sub-micron diameters. While conventional optical fibre couplers exhibit a wide spectral region of modal interference where two modes provide a continuous oscillatory behaviour associated to the large difference between phase constants of interfering supermodes, nanofiber couplers (NFC) exhibit an anomalous behaviour (Fig. 1) in close proximity to the supermodes cut-off wavelengths, where the high extinction ratio oscillations can exhibit a very slow oscillation. This region of interest exhibits flat transmission over nearly 20nm and results from the variation of the supermodes dispersion near their cut-off. This hybrid behaviour, where a flat transmission region is proximal to rapid spectral oscillations, allows the NFC to operate at high sensitivity as well as large dynamic range for application related to optical detection. &more...
Ismaeel, Rand
c1fb0984-a4c0-484a-8aef-625d48a62086
Talataisong, Wanvisa
7901320c-7d2e-488a-b47f-c93de4245234
Gouveia, Marcelo A.
8ada4013-f50e-4d66-b485-f47ddf16cef2
Beresna, Martynas
a6dc062e-93c6-46a5-aeb3-8de332cdec7b
Brambilla, Gilberto
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28 June 2017
Ismaeel, Rand
c1fb0984-a4c0-484a-8aef-625d48a62086
Talataisong, Wanvisa
7901320c-7d2e-488a-b47f-c93de4245234
Gouveia, Marcelo A.
8ada4013-f50e-4d66-b485-f47ddf16cef2
Beresna, Martynas
a6dc062e-93c6-46a5-aeb3-8de332cdec7b
Brambilla, Gilberto
815d9712-62c7-47d1-8860-9451a363a6c8
Ismaeel, Rand, Talataisong, Wanvisa, Gouveia, Marcelo A., Beresna, Martynas and Brambilla, Gilberto
(2017)
Anomalous spectral behaviour of weakly-fused optical fibre couplers with sub-micron diameters.
2017 Conference on lasers and electro-optics and European Quantum Electronics conference, , Munich, Germany.
25 - 29 Jun 2017.
Record type:
Conference or Workshop Item
(Poster)
Abstract
Weakly-fused optical fibre couplers can be simplified as a system of two optical fibre tapers, which are often called nanofibers when having sub-micron diameters. While conventional optical fibre couplers exhibit a wide spectral region of modal interference where two modes provide a continuous oscillatory behaviour associated to the large difference between phase constants of interfering supermodes, nanofiber couplers (NFC) exhibit an anomalous behaviour (Fig. 1) in close proximity to the supermodes cut-off wavelengths, where the high extinction ratio oscillations can exhibit a very slow oscillation. This region of interest exhibits flat transmission over nearly 20nm and results from the variation of the supermodes dispersion near their cut-off. This hybrid behaviour, where a flat transmission region is proximal to rapid spectral oscillations, allows the NFC to operate at high sensitivity as well as large dynamic range for application related to optical detection. &more...
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Accepted/In Press date: 23 March 2017
Published date: 28 June 2017
Venue - Dates:
2017 Conference on lasers and electro-optics and European Quantum Electronics conference, , Munich, Germany, 2017-06-25 - 2017-06-29
Organisations:
Optoelectronics Research Centre
Identifiers
Local EPrints ID: 408500
URI: http://eprints.soton.ac.uk/id/eprint/408500
PURE UUID: ce4f8ec1-7477-437e-ba22-a2daade63e06
Catalogue record
Date deposited: 20 May 2017 04:05
Last modified: 14 Mar 2024 02:45
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Contributors
Author:
Rand Ismaeel
Author:
Wanvisa Talataisong
Author:
Marcelo A. Gouveia
Author:
Martynas Beresna
Author:
Gilberto Brambilla
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