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Polarization stable hollow core fiber interferometer with Faraday rotator mirrors

Polarization stable hollow core fiber interferometer with Faraday rotator mirrors
Polarization stable hollow core fiber interferometer with Faraday rotator mirrors

We report the fabrication of a hollow core fiber (HCF) coupled Faraday rotator mirror component with a total insertion loss below 1.1 dB and demonstrate its use in a polarization-stable all-fiber Michelson interferometer. The signal split into the two interferometer arms is performed using a standard 2x2 fused fiber coupler. One of the coupler output ports is permanently and directly connected to the HCF with a low return loss (below -40 dB) and negligible signal coupling into higher-order modes. The demonstrated polarization-insensitive interferometer shows residual peak-to-peak polarization-induced power variations as low as 0.04 dB. The device will be of interest in interferometric applications requiring low thermal sensitivity as the phase drift of light propagating through an HCF is over an order of magnitude less sensitive to temperature than in standard fiber. Moreover, the fiber nonlinearity is almost three orders of magnitude lower in HCFs as compared to standard solid optical fibers.

Hollow core fibers, Interference, Mirrors, Optical fiber couplers, Optical fiber polarization, Optical fibers, Optical interferometry, Sensitivity, fiber interferometers
1041-1135
1503-1506
Slavík, Radan
2591726a-ecc0-4d1a-8e1d-4d0fd8da8f7d
Dousek, Daniel
e7308d3b-fdcc-4d9f-ad98-bc905774c860
Suslov, Dmytro
5a67f33b-9b3a-428e-910e-9fbc8d1a6248
Komanec, Matej
be991afd-3cb0-458a-a7c8-4557051e2bcf
Zvanovec, Stanislav
037bcfba-8cc7-4f6f-8226-72d29fe7e636
Poletti, Francesco
9adcef99-5558-4644-96d7-ce24b5897491
Richardson, David J.
ebfe1ff9-d0c2-4e52-b7ae-c1b13bccdef3
Slavík, Radan
2591726a-ecc0-4d1a-8e1d-4d0fd8da8f7d
Dousek, Daniel
e7308d3b-fdcc-4d9f-ad98-bc905774c860
Suslov, Dmytro
5a67f33b-9b3a-428e-910e-9fbc8d1a6248
Komanec, Matej
be991afd-3cb0-458a-a7c8-4557051e2bcf
Zvanovec, Stanislav
037bcfba-8cc7-4f6f-8226-72d29fe7e636
Poletti, Francesco
9adcef99-5558-4644-96d7-ce24b5897491
Richardson, David J.
ebfe1ff9-d0c2-4e52-b7ae-c1b13bccdef3

Slavík, Radan, Dousek, Daniel, Suslov, Dmytro, Komanec, Matej, Zvanovec, Stanislav, Poletti, Francesco and Richardson, David J. (2021) Polarization stable hollow core fiber interferometer with Faraday rotator mirrors. IEEE Photonics Technology Letters, 33 (24), 1503-1506. (doi:10.1109/LPT.2021.3129591).

Record type: Article

Abstract

We report the fabrication of a hollow core fiber (HCF) coupled Faraday rotator mirror component with a total insertion loss below 1.1 dB and demonstrate its use in a polarization-stable all-fiber Michelson interferometer. The signal split into the two interferometer arms is performed using a standard 2x2 fused fiber coupler. One of the coupler output ports is permanently and directly connected to the HCF with a low return loss (below -40 dB) and negligible signal coupling into higher-order modes. The demonstrated polarization-insensitive interferometer shows residual peak-to-peak polarization-induced power variations as low as 0.04 dB. The device will be of interest in interferometric applications requiring low thermal sensitivity as the phase drift of light propagating through an HCF is over an order of magnitude less sensitive to temperature than in standard fiber. Moreover, the fiber nonlinearity is almost three orders of magnitude lower in HCFs as compared to standard solid optical fibers.

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Accepted/In Press date: 14 November 2021
e-pub ahead of print date: 19 November 2021
Published date: 15 December 2021
Keywords: Hollow core fibers, Interference, Mirrors, Optical fiber couplers, Optical fiber polarization, Optical fibers, Optical interferometry, Sensitivity, fiber interferometers

Identifiers

Local EPrints ID: 452848
URI: http://eprints.soton.ac.uk/id/eprint/452848
ISSN: 1041-1135
PURE UUID: b4dea5c5-c016-4b57-af6c-978f92e6458d
ORCID for Radan Slavík: ORCID iD orcid.org/0000-0002-9336-4262
ORCID for Francesco Poletti: ORCID iD orcid.org/0000-0002-1000-3083
ORCID for David J. Richardson: ORCID iD orcid.org/0000-0002-7751-1058

Catalogue record

Date deposited: 21 Dec 2021 17:55
Last modified: 28 Apr 2022 02:01

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Contributors

Author: Radan Slavík ORCID iD
Author: Daniel Dousek
Author: Dmytro Suslov
Author: Matej Komanec
Author: Stanislav Zvanovec

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