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Semiconductor filled microstructured optical fibres with single mode guidance

Semiconductor filled microstructured optical fibres with single mode guidance
Semiconductor filled microstructured optical fibres with single mode guidance
Microstructured optical fibre (MOF) technology has generated new opportunities for the implementation of optical fibres with novel properties and functions [1]. It has been shown that silica MOFs make excellent 3D templates for semiconductor material deposition inside the capillary voids [2]. Recently a silicon MOF was designed and fabricated that had a high refractive index micron sized core, but yet only supported two guided modes [3]. This structure was realised via the complete filling of a hollow core photonic bandgap fibre (PBGF) with silicon so that the original air guiding PBGF was converted to a total internal reflection guiding fibre. Here, we extend the investigation by using a finite element method to model the optical properties of semiconductor filled MOFs of similar structures, with the aim to achieve broadband single mode guidance. Strategies to achieve single mode guidance both through the MOF template design and the selective filling of the voids of the original PBGF with semiconductor materials of different indices (silicon, silicon nitride, germanium) are proposed and investigated numerically. In particular, by selectively filling MOF templates with cladding rods that have a slightly raised index over that of the core, index guiding single mode operation can be observed in high index micron sized cores. Small index differences are achievable by controlling the nitrogen content in SiNx and an example of a single mode semiconductor MOF is shown in Figure 1, where the confinement loss of the fundamental mode is ~106 lower than the lowest order cladding mode.
Vukovic, N.
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Healy, N.
26eec85c-8d12-4f21-a67a-022f8dc2daab
Poletti, F.
9adcef99-5558-4644-96d7-ce24b5897491
Peacock, A.C.
685d924c-ef6b-401b-a0bd-acf1f8e758fc
Vukovic, N.
3de33ba9-eb8f-4a06-a65e-4ac0a602a157
Healy, N.
26eec85c-8d12-4f21-a67a-022f8dc2daab
Poletti, F.
9adcef99-5558-4644-96d7-ce24b5897491
Peacock, A.C.
685d924c-ef6b-401b-a0bd-acf1f8e758fc

Vukovic, N., Healy, N., Poletti, F. and Peacock, A.C. (2010) Semiconductor filled microstructured optical fibres with single mode guidance. Photon 10, Southampton, United Kingdom. 23 - 26 Aug 2010. 1 pp .

Record type: Conference or Workshop Item (Paper)

Abstract

Microstructured optical fibre (MOF) technology has generated new opportunities for the implementation of optical fibres with novel properties and functions [1]. It has been shown that silica MOFs make excellent 3D templates for semiconductor material deposition inside the capillary voids [2]. Recently a silicon MOF was designed and fabricated that had a high refractive index micron sized core, but yet only supported two guided modes [3]. This structure was realised via the complete filling of a hollow core photonic bandgap fibre (PBGF) with silicon so that the original air guiding PBGF was converted to a total internal reflection guiding fibre. Here, we extend the investigation by using a finite element method to model the optical properties of semiconductor filled MOFs of similar structures, with the aim to achieve broadband single mode guidance. Strategies to achieve single mode guidance both through the MOF template design and the selective filling of the voids of the original PBGF with semiconductor materials of different indices (silicon, silicon nitride, germanium) are proposed and investigated numerically. In particular, by selectively filling MOF templates with cladding rods that have a slightly raised index over that of the core, index guiding single mode operation can be observed in high index micron sized cores. Small index differences are achievable by controlling the nitrogen content in SiNx and an example of a single mode semiconductor MOF is shown in Figure 1, where the confinement loss of the fundamental mode is ~106 lower than the lowest order cladding mode.

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More information

e-pub ahead of print date: August 2010
Venue - Dates: Photon 10, Southampton, United Kingdom, 2010-08-23 - 2010-08-26
Organisations: Optoelectronics Research Centre

Identifiers

Local EPrints ID: 340788
URI: https://eprints.soton.ac.uk/id/eprint/340788
PURE UUID: 122edb5e-41d9-4165-9dd3-be886fc53819
ORCID for F. Poletti: ORCID iD orcid.org/0000-0002-1000-3083
ORCID for A.C. Peacock: ORCID iD orcid.org/0000-0002-1940-7172

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Date deposited: 05 Jul 2012 12:32
Last modified: 03 Oct 2019 00:36

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