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Long-period fiber grating fabrication by high-intensity femtosecond pulses at 211 nm

Long-period fiber grating fabrication by high-intensity femtosecond pulses at 211 nm
Long-period fiber grating fabrication by high-intensity femtosecond pulses at 211 nm
Using high-intensity (110-200 GW/cm2) 250-fs 211-nm laser pulses and a point-by-point technique, the efficiency of long-period grating inscription in H2-loaded standard telecom Corning SMF-28 and H2-free photosensitive B-codoped Fibercore fibers was studied and compared with those at other existing recording methods (low-intensity 157-nm, 193-nm, 248-nm or high-intensity 264-nm fabrications).

It was shown that at high-intensity 211-nm laser inscription, two-quantum photoreactions are responsible for long-period fiber grating (LPFG) formation, which results in a significant photosensitivity enhancement in comparison with conventional low-intensity 248-nm exposure (by 45 times for SMF-28 fiber).

It was found that the grating strength in the case of SMF-28 fiber, irradiated with high-intensity 211-nm pulses, reaches 28 dB, which is the highest value among all known photochemical approaches. The thermal studies of the recorded gratings were also conducted.
laser excitation, optical fiber devices, optical fiber filters, ultraviolet radiation effects
0733-8724
2568-2578
Kalachev, Alexey I.
8080082c-a6b4-4d3c-a46d-c1f10f365215
Nikogosyan, David N.
b1d0f0c1-158b-4694-b168-6c5c2f175b54
Brambilla, Gilberto
815d9712-62c7-47d1-8860-9451a363a6c8
Kalachev, Alexey I.
8080082c-a6b4-4d3c-a46d-c1f10f365215
Nikogosyan, David N.
b1d0f0c1-158b-4694-b168-6c5c2f175b54
Brambilla, Gilberto
815d9712-62c7-47d1-8860-9451a363a6c8

Kalachev, Alexey I., Nikogosyan, David N. and Brambilla, Gilberto (2005) Long-period fiber grating fabrication by high-intensity femtosecond pulses at 211 nm. IEEE Journal of Lightwave Technology, 23 (8), 2568-2578. (doi:10.1109/JLT.2005.851335).

Record type: Article

Abstract

Using high-intensity (110-200 GW/cm2) 250-fs 211-nm laser pulses and a point-by-point technique, the efficiency of long-period grating inscription in H2-loaded standard telecom Corning SMF-28 and H2-free photosensitive B-codoped Fibercore fibers was studied and compared with those at other existing recording methods (low-intensity 157-nm, 193-nm, 248-nm or high-intensity 264-nm fabrications).

It was shown that at high-intensity 211-nm laser inscription, two-quantum photoreactions are responsible for long-period fiber grating (LPFG) formation, which results in a significant photosensitivity enhancement in comparison with conventional low-intensity 248-nm exposure (by 45 times for SMF-28 fiber).

It was found that the grating strength in the case of SMF-28 fiber, irradiated with high-intensity 211-nm pulses, reaches 28 dB, which is the highest value among all known photochemical approaches. The thermal studies of the recorded gratings were also conducted.

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More information

Published date: 2005
Keywords: laser excitation, optical fiber devices, optical fiber filters, ultraviolet radiation effects
Organisations: Optoelectronics Research Centre

Identifiers

Local EPrints ID: 30200
URI: https://eprints.soton.ac.uk/id/eprint/30200
ISSN: 0733-8724
PURE UUID: 3897e138-05c5-468e-9495-5fad585e58ae

Catalogue record

Date deposited: 11 May 2006
Last modified: 15 Jul 2019 19:07

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