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UV-irradiation induced stress and index changes during the growth of type-I and type-IIA fiber gratings

UV-irradiation induced stress and index changes during the growth of type-I and type-IIA fiber gratings
UV-irradiation induced stress and index changes during the growth of type-I and type-IIA fiber gratings
Changes in axial stress and refractive index have been measured as a function of the total UV-irradiation fluence during the formation of Bragg gratings in B/Ge- and Sn/Ge-codoped core fibers. For the B/Ge-codoped core fiber, a fast development of the type-I grating with a significant increase in refractive index and tensile stress in the fiber core is followed by a slow growth of the type-IIA grating with a gradual decrease of refractive index and tensile core stress. A strong UV-induced reduction of the core stress and a domination of the type-IIA grating are observed for the Sn/Ge-codoped fiber. The index changes of the type-I and type-IIA gratings are believed to be governed by the compaction of the UV-irradiated core network and its dilation, respectively.
optical fiber, bragg grating, photosensitivity, axial stress
0030-4018
313-318
Ky, Nguyen Hong
8205d3d2-122c-41f8-bde0-b77bcef04931
Limberger, H.G.
10cfb4e7-08e9-429d-9ea9-b31145e5d9e5
Salathé, R.P.
ea67db6b-9d3a-4221-bb07-fc20064d2758
Cochet, F.
8bd07f94-310c-49b9-9a10-60342f423fd4
Dong, L.
4a30a247-d676-42ef-aaf4-061579d6d64e
Ky, Nguyen Hong
8205d3d2-122c-41f8-bde0-b77bcef04931
Limberger, H.G.
10cfb4e7-08e9-429d-9ea9-b31145e5d9e5
Salathé, R.P.
ea67db6b-9d3a-4221-bb07-fc20064d2758
Cochet, F.
8bd07f94-310c-49b9-9a10-60342f423fd4
Dong, L.
4a30a247-d676-42ef-aaf4-061579d6d64e

Ky, Nguyen Hong, Limberger, H.G., Salathé, R.P., Cochet, F. and Dong, L. (2003) UV-irradiation induced stress and index changes during the growth of type-I and type-IIA fiber gratings. Optics Communications, 225 (4-6), 313-318. (doi:10.1016/j.optcom.2003.07.039).

Record type: Article

Abstract

Changes in axial stress and refractive index have been measured as a function of the total UV-irradiation fluence during the formation of Bragg gratings in B/Ge- and Sn/Ge-codoped core fibers. For the B/Ge-codoped core fiber, a fast development of the type-I grating with a significant increase in refractive index and tensile stress in the fiber core is followed by a slow growth of the type-IIA grating with a gradual decrease of refractive index and tensile core stress. A strong UV-induced reduction of the core stress and a domination of the type-IIA grating are observed for the Sn/Ge-codoped fiber. The index changes of the type-I and type-IIA gratings are believed to be governed by the compaction of the UV-irradiated core network and its dilation, respectively.

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More information

Published date: 1 October 2003
Keywords: optical fiber, bragg grating, photosensitivity, axial stress
Organisations: Optoelectronics Research Centre

Identifiers

Local EPrints ID: 378582
URI: http://eprints.soton.ac.uk/id/eprint/378582
ISSN: 0030-4018
PURE UUID: 5d379f5a-c9cf-424a-8f2e-f419842474bb

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Date deposited: 01 Jul 2015 10:38
Last modified: 08 Jan 2022 18:22

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Contributors

Author: Nguyen Hong Ky
Author: H.G. Limberger
Author: R.P. Salathé
Author: F. Cochet
Author: L. Dong

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