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Proceedings Paper

Characterization of a first window amplifier using a thulium-doped fluoride fiber
Author(s): R. Michael Percival; Daryl Szebesta; John R. Williams; Richard D.T. Lauder; Anne C. Tropper; David C. Hanna
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Paper Abstract

A fully connectorized diode laser pumped first window amplifier has been constructed, for the first time, around a thulium doped fluoride fiber. For a 780/806 nm combination of pump and signal wavelengths intrinsic small signal gains of 25 - 26 dB and gain efficiencies of 2.4 dB/mW have been achieved. In addition output powers approaching +13 dBm from the doped fiber were possible for launched pump powers of 31 mW, which corresponds to a pump to signal conversion efficiency of around 64%. Minimum noise figures of 4 - 5 dB have been achieved with characteristics which mirror the output power performance. The 3 dB gain bandwidth for this transition has been measured at 9 - 10 nm for small signals, increasing to better than 15 nm under signal saturation conditions.

Paper Details

Date Published: 3 October 1994
PDF: 6 pages
Proc. SPIE 2289, Doped Fiber Devices and Systems, (3 October 1994); doi: 10.1117/12.188704
Show Author Affiliations
R. Michael Percival, BT Labs. (United Kingdom)
Daryl Szebesta, BT Labs. (United Kingdom)
John R. Williams, BT Labs. (United Kingdom)
Richard D.T. Lauder, Univ. of Southampton (United Kingdom)
Anne C. Tropper, Univ. of Southampton (United Kingdom)
David C. Hanna, Univ. of Southampton (United Kingdom)

Published in SPIE Proceedings Vol. 2289:
Doped Fiber Devices and Systems
Michel J. F. Digonnet, Editor(s)

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