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Photoinduced refractive-index changes in germanosilicate fibres

Photoinduced refractive-index changes in germanosilicate fibres
Photoinduced refractive-index changes in germanosilicate fibres
Photoinduced guided index changes approaching 10-4 in the range 488-784 nm, measured using a simple interferometric technique, are reported in germanosilicate single-mode optical fibers exposed to the 488-nm line of an Ar+ laser running multifrequency. The wavelength dependence and dynamics of the writing process are characterized, and the material dispersion of the induced Δn(λ) is shown to be weak. The effect is placed in the context of related research on color centers in these fibers, and two different mechanisms are proposed that lead to quantitative estimates in rough agreement with the measured Δn values.
0146-9592
102-104
Hand, D.P.
a08ad5b2-7543-4a99-a1d2-e14934ee0faf
Russell, P.St.J.
77db5e8d-8223-4806-ae60-a106619a022a
Hand, D.P.
a08ad5b2-7543-4a99-a1d2-e14934ee0faf
Russell, P.St.J.
77db5e8d-8223-4806-ae60-a106619a022a

Hand, D.P. and Russell, P.St.J. (1990) Photoinduced refractive-index changes in germanosilicate fibres. Optics Letters, 15 (2), 102-104. (doi:10.1364/OL.15.000102).

Record type: Article

Abstract

Photoinduced guided index changes approaching 10-4 in the range 488-784 nm, measured using a simple interferometric technique, are reported in germanosilicate single-mode optical fibers exposed to the 488-nm line of an Ar+ laser running multifrequency. The wavelength dependence and dynamics of the writing process are characterized, and the material dispersion of the induced Δn(λ) is shown to be weak. The effect is placed in the context of related research on color centers in these fibers, and two different mechanisms are proposed that lead to quantitative estimates in rough agreement with the measured Δn values.

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Published date: 1990

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Local EPrints ID: 78424
URI: http://eprints.soton.ac.uk/id/eprint/78424
ISSN: 0146-9592
PURE UUID: 53ad150b-b71c-4f88-b0be-e14abf7ec0c1

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Date deposited: 11 Mar 2010
Last modified: 14 Mar 2024 00:14

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Contributors

Author: D.P. Hand
Author: P.St.J. Russell

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