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Photosensitivity in tantalum doped silica optical fibres

Photosensitivity in tantalum doped silica optical fibres
Photosensitivity in tantalum doped silica optical fibres
Photodarkening and photoinduced index changes are reported for the first time to our knowledge in tantalum-doped silica optical fibers exposed to KrF excimer laser emission at 248nm. The UV absorption of the tantalum-doped preform features the tail of a strong absorption band below 200nm. The 248nm-induced absorption in the UV also features the tail of a band below 200nm. Photodarkening at 900nm shows signs of saturation after several excimer pulses and some recovery after each pulse. Using an external holographic writing technique at 248nm, we also formed Bragg gratings at 1.55µm in these fibers. The grating growth saturated after several pulses and displayed a fast decay component when writing was performed with a higher pulse rate. The decay is well fitted by a stretched exponential with beta = 0.35.
0740-3224
1747-1750
Dong, L.
4a30a247-d676-42ef-aaf4-061579d6d64e
Archambault, J.L.
22245ae0-fbe9-4d25-a850-f3b38c78848a
Taylor, E.R.
d9a73a87-6abd-4a1e-a462-84549c667d19
Roe, M.P.
c0b88f51-a78a-4415-b9fb-76fff227acdd
Reekie, L.
ec314137-6924-44ad-86a4-ff3f9a67c1b5
Russell, P.St.J.
77db5e8d-8223-4806-ae60-a106619a022a
Dong, L.
4a30a247-d676-42ef-aaf4-061579d6d64e
Archambault, J.L.
22245ae0-fbe9-4d25-a850-f3b38c78848a
Taylor, E.R.
d9a73a87-6abd-4a1e-a462-84549c667d19
Roe, M.P.
c0b88f51-a78a-4415-b9fb-76fff227acdd
Reekie, L.
ec314137-6924-44ad-86a4-ff3f9a67c1b5
Russell, P.St.J.
77db5e8d-8223-4806-ae60-a106619a022a

Dong, L., Archambault, J.L., Taylor, E.R., Roe, M.P., Reekie, L. and Russell, P.St.J. (1995) Photosensitivity in tantalum doped silica optical fibres. Journal of the Optical Society of America B, 12 (9), 1747-1750. (doi:10.1364/JOSAB.12.001747).

Record type: Article

Abstract

Photodarkening and photoinduced index changes are reported for the first time to our knowledge in tantalum-doped silica optical fibers exposed to KrF excimer laser emission at 248nm. The UV absorption of the tantalum-doped preform features the tail of a strong absorption band below 200nm. The 248nm-induced absorption in the UV also features the tail of a band below 200nm. Photodarkening at 900nm shows signs of saturation after several excimer pulses and some recovery after each pulse. Using an external holographic writing technique at 248nm, we also formed Bragg gratings at 1.55µm in these fibers. The grating growth saturated after several pulses and displayed a fast decay component when writing was performed with a higher pulse rate. The decay is well fitted by a stretched exponential with beta = 0.35.

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Published date: 1995
Organisations: Optoelectronics Research Centre

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Local EPrints ID: 78170
URI: http://eprints.soton.ac.uk/id/eprint/78170
ISSN: 0740-3224
PURE UUID: 53558a18-f4f7-40b3-8e6c-f979968be43e

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Date deposited: 11 Mar 2010
Last modified: 14 Feb 2020 17:33

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