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Point-by-point femtosecond laser micro-processing of independent core-specific fiber Bragg gratings in a multi-core fiber

Point-by-point femtosecond laser micro-processing of independent core-specific fiber Bragg gratings in a multi-core fiber
Point-by-point femtosecond laser micro-processing of independent core-specific fiber Bragg gratings in a multi-core fiber

Four 3rd order fiber Bragg gratings were inscribed into separate cores of a 7 core multi-core fiber using the point-by-point inscription technique. A 1030 nm, 206 ± 5 fs laser was used, operating at a frequency of 1 kHz and pulse energy of 2.1 ± 0.2 µJ. Independent Bragg resonances at λB = 1541.01 ± 0.02, 1547.82 ± 0.02, 1532.66 ± 0.02, and 1537.42 ± 0.02 nm and extinction ratios of 13.97 ± 0.4, 16.02 ± 0.4, 10.08 ± 0.4 and 13.40 ± 0.4 dB were recorded. Our data analysis shows that refractive index changes, Δn, of the order 10−3 were induced. Core-specific inscription of fiber Bragg gratings in a multi-core fiber can provide a flexible and versatile platform to address the needs of recent space division multiplexed transmission and optical sensor networks.

1094-4087
2039-2044
Donko, A.
3786c6f9-efb1-4d38-8366-9df4e9bd4033
Beresna, M.
a6dc062e-93c6-46a5-aeb3-8de332cdec7b
Jung, Y.
6685e51e-be47-4c96-8c4b-65aee3b5126d
Hayes, J.
9b5884a9-5889-4ec7-9e51-345843722a3a
Richardson, D. J.
ebfe1ff9-d0c2-4e52-b7ae-c1b13bccdef3
Brambilla, G.
815d9712-62c7-47d1-8860-9451a363a6c8
Donko, A.
3786c6f9-efb1-4d38-8366-9df4e9bd4033
Beresna, M.
a6dc062e-93c6-46a5-aeb3-8de332cdec7b
Jung, Y.
6685e51e-be47-4c96-8c4b-65aee3b5126d
Hayes, J.
9b5884a9-5889-4ec7-9e51-345843722a3a
Richardson, D. J.
ebfe1ff9-d0c2-4e52-b7ae-c1b13bccdef3
Brambilla, G.
815d9712-62c7-47d1-8860-9451a363a6c8

Donko, A., Beresna, M., Jung, Y., Hayes, J., Richardson, D. J. and Brambilla, G. (2018) Point-by-point femtosecond laser micro-processing of independent core-specific fiber Bragg gratings in a multi-core fiber. Optics Express, 26 (2), 2039-2044. (doi:10.1364/OE.26.002039).

Record type: Article

Abstract

Four 3rd order fiber Bragg gratings were inscribed into separate cores of a 7 core multi-core fiber using the point-by-point inscription technique. A 1030 nm, 206 ± 5 fs laser was used, operating at a frequency of 1 kHz and pulse energy of 2.1 ± 0.2 µJ. Independent Bragg resonances at λB = 1541.01 ± 0.02, 1547.82 ± 0.02, 1532.66 ± 0.02, and 1537.42 ± 0.02 nm and extinction ratios of 13.97 ± 0.4, 16.02 ± 0.4, 10.08 ± 0.4 and 13.40 ± 0.4 dB were recorded. Our data analysis shows that refractive index changes, Δn, of the order 10−3 were induced. Core-specific inscription of fiber Bragg gratings in a multi-core fiber can provide a flexible and versatile platform to address the needs of recent space division multiplexed transmission and optical sensor networks.

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Accepted/In Press date: 10 December 2017
e-pub ahead of print date: 18 January 2018
Published date: 22 January 2018

Identifiers

Local EPrints ID: 417604
URI: https://eprints.soton.ac.uk/id/eprint/417604
ISSN: 1094-4087
PURE UUID: 62c60f0b-be23-4f4f-8ed4-b3c2874437a6
ORCID for A. Donko: ORCID iD orcid.org/0000-0003-1884-743X

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Date deposited: 07 Feb 2018 17:30
Last modified: 16 Aug 2018 00:24

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Contributors

Author: A. Donko ORCID iD
Author: M. Beresna
Author: Y. Jung
Author: J. Hayes
Author: G. Brambilla

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