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Real-time modal analysis via wavelength-swept spatial and spectral (S2) imaging

Real-time modal analysis via wavelength-swept spatial and spectral (S2) imaging
Real-time modal analysis via wavelength-swept spatial and spectral (S2) imaging
We present a fast implementation of the spatial and spectral imaging (S2) technique for modal analysis of multimode optical fibers. It utilizes a continuously scanning tunable laser source with an InGaAs camera operating at 500Hz along with inline data processing to increase the measurement repetition rate, by reducing the run up/run down time between two successive scans (about 27 times faster as compared to the previous state of the art). This allows real-time mode content monitoring of a multimode fiber. We illustrate the potential of this tool by collecting an 110,000 wavelength S2 spectrogram of a 5 mode-group fiber in minutes, and tracking, in real-time, the four LP11 modes of the same fiber as the launch polarization is rotated.
characterization, fiber optics, multimode
1041-1135
1-4
Gray, D.R.
46319dbb-26c5-487b-af42-891e7b00e14f
Petrovich, M.N.
bfe895a0-da85-4a40-870a-2c7bfc84a4cf
Sandoghchi, S.R.
15499707-d3f2-42f1-90e2-cbe260462487
Wheeler, N.V.
0fd34178-a77b-4c71-a3a6-86a1f634f1a0
Baddela, N.K.
1a871ff8-f95d-495b-8b91-9d6ccd209528
Jasion, G.
16cfff1d-d178-41d1-a092-56e6239726b8
Bradley, T.
d4cce4f3-bb69-4e14-baee-cd6a88e38101
Richardson, D.J.
ebfe1ff9-d0c2-4e52-b7ae-c1b13bccdef3
Poletti, F.
9adcef99-5558-4644-96d7-ce24b5897491
Gray, D.R.
46319dbb-26c5-487b-af42-891e7b00e14f
Petrovich, M.N.
bfe895a0-da85-4a40-870a-2c7bfc84a4cf
Sandoghchi, S.R.
15499707-d3f2-42f1-90e2-cbe260462487
Wheeler, N.V.
0fd34178-a77b-4c71-a3a6-86a1f634f1a0
Baddela, N.K.
1a871ff8-f95d-495b-8b91-9d6ccd209528
Jasion, G.
16cfff1d-d178-41d1-a092-56e6239726b8
Bradley, T.
d4cce4f3-bb69-4e14-baee-cd6a88e38101
Richardson, D.J.
ebfe1ff9-d0c2-4e52-b7ae-c1b13bccdef3
Poletti, F.
9adcef99-5558-4644-96d7-ce24b5897491

Gray, D.R., Petrovich, M.N., Sandoghchi, S.R., Wheeler, N.V., Baddela, N.K., Jasion, G., Bradley, T., Richardson, D.J. and Poletti, F. (2016) Real-time modal analysis via wavelength-swept spatial and spectral (S2) imaging. IEEE Photonics Technology Letters, 1-4. (doi:10.1109/LPT.2016.2524592).

Record type: Article

Abstract

We present a fast implementation of the spatial and spectral imaging (S2) technique for modal analysis of multimode optical fibers. It utilizes a continuously scanning tunable laser source with an InGaAs camera operating at 500Hz along with inline data processing to increase the measurement repetition rate, by reducing the run up/run down time between two successive scans (about 27 times faster as compared to the previous state of the art). This allows real-time mode content monitoring of a multimode fiber. We illustrate the potential of this tool by collecting an 110,000 wavelength S2 spectrogram of a 5 mode-group fiber in minutes, and tracking, in real-time, the four LP11 modes of the same fiber as the launch polarization is rotated.

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More information

Submitted date: 12 October 2015
Accepted/In Press date: 25 January 2016
e-pub ahead of print date: 3 February 2016
Keywords: characterization, fiber optics, multimode
Organisations: Optoelectronics Research Centre

Identifiers

Local EPrints ID: 379433
URI: https://eprints.soton.ac.uk/id/eprint/379433
ISSN: 1041-1135
PURE UUID: 9f123443-0b9e-4bc6-94ae-78adae85e69d
ORCID for M.N. Petrovich: ORCID iD orcid.org/0000-0002-3905-5901
ORCID for S.R. Sandoghchi: ORCID iD orcid.org/0000-0003-2196-3167
ORCID for N.V. Wheeler: ORCID iD orcid.org/0000-0002-1265-9510
ORCID for G. Jasion: ORCID iD orcid.org/0000-0001-5030-6479
ORCID for T. Bradley: ORCID iD orcid.org/0000-0001-6568-5811
ORCID for D.J. Richardson: ORCID iD orcid.org/0000-0002-7751-1058
ORCID for F. Poletti: ORCID iD orcid.org/0000-0002-1000-3083

Catalogue record

Date deposited: 04 Feb 2016 09:03
Last modified: 03 Dec 2019 02:05

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