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Coherent, focus-corrected imaging of optical fiber facets using a single-pixel detector

Coherent, focus-corrected imaging of optical fiber facets using a single-pixel detector
Coherent, focus-corrected imaging of optical fiber facets using a single-pixel detector
A novel imaging technique that produces accurate amplitude and phase images of an optical fiber facet using only a phase-only liquid-crystal on silicon (LCOS) spatial light modulator (SLM) and a single-pixel detector is presented. The system can take images in two orthogonal polarizations and so provides a powerful tool for modal characterization of multimode fibers, which is of increasing importance due to their burgeoning use in telecommunications and medical applications. This technique first uses a simulated annealing algorithm to compute a hologram that collects light from a small region of the fiber facet. Next, the fiber facet is automatically brought into focus using adaptive aberration correction on the SLM. Finally, a common-path interferometer is created using the SLM, and the phase of the optical field at each pixel is determined. Finally, high-definition amplitude and phase images of a ring-core refractive index fiber are presented as a proof-of-principle demonstration of the technique.
0146-9592
6034-6037
Gordon, George S.D.
764a07c6-deb9-4d74-8291-d104d3991806
Feng, Feng
04f20a64-6bed-42b5-9815-488df06a5929
Kang, Qiongyue
261baa75-d2c0-46f1-9386-3c6a138129f0
Jung, Yongmin
6685e51e-be47-4c96-8c4b-65aee3b5126d
Sahu, Jayanta
009f5fb3-6555-411a-9a0c-9a1b5a29ceb2
Wilkinson, Timothy
fa054c37-a325-4f32-8734-593d8ab2d25c
Gordon, George S.D.
764a07c6-deb9-4d74-8291-d104d3991806
Feng, Feng
04f20a64-6bed-42b5-9815-488df06a5929
Kang, Qiongyue
261baa75-d2c0-46f1-9386-3c6a138129f0
Jung, Yongmin
6685e51e-be47-4c96-8c4b-65aee3b5126d
Sahu, Jayanta
009f5fb3-6555-411a-9a0c-9a1b5a29ceb2
Wilkinson, Timothy
fa054c37-a325-4f32-8734-593d8ab2d25c

Gordon, George S.D., Feng, Feng, Kang, Qiongyue, Jung, Yongmin, Sahu, Jayanta and Wilkinson, Timothy (2014) Coherent, focus-corrected imaging of optical fiber facets using a single-pixel detector. Optics Letters, 39 (20), 6034-6037. (doi:10.1364/OL.39.006034). (PMID:25361149)

Record type: Article

Abstract

A novel imaging technique that produces accurate amplitude and phase images of an optical fiber facet using only a phase-only liquid-crystal on silicon (LCOS) spatial light modulator (SLM) and a single-pixel detector is presented. The system can take images in two orthogonal polarizations and so provides a powerful tool for modal characterization of multimode fibers, which is of increasing importance due to their burgeoning use in telecommunications and medical applications. This technique first uses a simulated annealing algorithm to compute a hologram that collects light from a small region of the fiber facet. Next, the fiber facet is automatically brought into focus using adaptive aberration correction on the SLM. Finally, a common-path interferometer is created using the SLM, and the phase of the optical field at each pixel is determined. Finally, high-definition amplitude and phase images of a ring-core refractive index fiber are presented as a proof-of-principle demonstration of the technique.

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More information

Published date: October 2014
Organisations: Optoelectronics Research Centre

Identifiers

Local EPrints ID: 372153
URI: http://eprints.soton.ac.uk/id/eprint/372153
ISSN: 0146-9592
PURE UUID: 2b06e930-dbbf-4337-9458-02d167295639
ORCID for Yongmin Jung: ORCID iD orcid.org/0000-0002-9054-4372
ORCID for Jayanta Sahu: ORCID iD orcid.org/0000-0003-3560-6152

Catalogue record

Date deposited: 01 Dec 2014 12:28
Last modified: 09 Jan 2022 03:29

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Contributors

Author: George S.D. Gordon
Author: Feng Feng
Author: Qiongyue Kang
Author: Yongmin Jung ORCID iD
Author: Jayanta Sahu ORCID iD
Author: Timothy Wilkinson

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