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High-performance low-loss fibre polarizer based on graphene and PVB

High-performance low-loss fibre polarizer based on graphene and PVB
High-performance low-loss fibre polarizer based on graphene and PVB
Graphene has exceptional electronic transport and photonic properties [1, 2] and as a result this ‘wonder material’ is steadily finding wide-ranging applications in optoelectronic technologies. Although in the short time since its discovery much of the focus has been on its use for electrical devices, more recently a number of graphene-based photonic devices have been demonstrated, including graphene polarizers and electro-absorption based modulators [2, 3]. In this paper, we present a high-performance low-loss broadband fibre polarizer. Previous iterations of such a device require that the optical fibre is polished into the core to provide the required strength of interaction between the graphene sheet and the propagating electromagnetic field, see Fig. 1a [3]. The penalty for this extent of polishing is large device loss (20 dB, at 1550 nm [3]), which has prevented this type of polarizer from becoming a major disruptive technology. With this in mind, we present the first steps towards producing a low-loss in-fibre graphene based polarizer by polishing the fibre close to, but not into, the core. Additional cladding between the fibre core and the graphene sheet reduces the propagation losses but, unfortunately, also decreases the polarizer’s extinction ratio. To address this, we spin coat a polyvinyl butyral (PVB) over-layer onto the graphene which as well as acting as a protective layer, also serves to increase its interaction with the electromagnetic field. A cross-section of the device is shown in Fig. 1b.
Zhang, H.
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Healy, N.
26eec85c-8d12-4f21-a67a-022f8dc2daab
Shen, L.
f45b1185-ca40-4af3-8b79-d444dc11dc8f
Huang, C.C.
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Hewak, D.W.
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Peacock, A.C.
685d924c-ef6b-401b-a0bd-acf1f8e758fc
Zhang, H.
9c978833-adbb-4880-b4a2-40854ba96285
Healy, N.
26eec85c-8d12-4f21-a67a-022f8dc2daab
Shen, L.
f45b1185-ca40-4af3-8b79-d444dc11dc8f
Huang, C.C.
825f7447-6d02-48f6-b95a-fa33da71f106
Hewak, D.W.
87c80070-c101-4f7a-914f-4cc3131e3db0
Peacock, A.C.
685d924c-ef6b-401b-a0bd-acf1f8e758fc

Zhang, H., Healy, N., Shen, L., Huang, C.C., Hewak, D.W. and Peacock, A.C. (2015) High-performance low-loss fibre polarizer based on graphene and PVB. CLEO/Europe-EQEC '15. 21 - 25 Jun 2015.

Record type: Conference or Workshop Item (Paper)

Abstract

Graphene has exceptional electronic transport and photonic properties [1, 2] and as a result this ‘wonder material’ is steadily finding wide-ranging applications in optoelectronic technologies. Although in the short time since its discovery much of the focus has been on its use for electrical devices, more recently a number of graphene-based photonic devices have been demonstrated, including graphene polarizers and electro-absorption based modulators [2, 3]. In this paper, we present a high-performance low-loss broadband fibre polarizer. Previous iterations of such a device require that the optical fibre is polished into the core to provide the required strength of interaction between the graphene sheet and the propagating electromagnetic field, see Fig. 1a [3]. The penalty for this extent of polishing is large device loss (20 dB, at 1550 nm [3]), which has prevented this type of polarizer from becoming a major disruptive technology. With this in mind, we present the first steps towards producing a low-loss in-fibre graphene based polarizer by polishing the fibre close to, but not into, the core. Additional cladding between the fibre core and the graphene sheet reduces the propagation losses but, unfortunately, also decreases the polarizer’s extinction ratio. To address this, we spin coat a polyvinyl butyral (PVB) over-layer onto the graphene which as well as acting as a protective layer, also serves to increase its interaction with the electromagnetic field. A cross-section of the device is shown in Fig. 1b.

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More information

Published date: June 2015
Additional Information: CH-6.5
Venue - Dates: CLEO/Europe-EQEC '15, 2015-06-21 - 2015-06-25
Organisations: Optoelectronics Research Centre

Identifiers

Local EPrints ID: 378977
URI: https://eprints.soton.ac.uk/id/eprint/378977
PURE UUID: e24ddc5a-57c3-4ed3-98b4-e8e2e24d5735
ORCID for H. Zhang: ORCID iD orcid.org/0000-0002-4577-3600
ORCID for C.C. Huang: ORCID iD orcid.org/0000-0003-3471-2463
ORCID for D.W. Hewak: ORCID iD orcid.org/0000-0002-2093-5773
ORCID for A.C. Peacock: ORCID iD orcid.org/0000-0002-1940-7172

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Date deposited: 15 Jul 2015 15:15
Last modified: 17 Nov 2018 01:36

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Contributors

Author: H. Zhang ORCID iD
Author: N. Healy
Author: L. Shen
Author: C.C. Huang ORCID iD
Author: D.W. Hewak ORCID iD
Author: A.C. Peacock ORCID iD

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