Characterisation of a first window amplifier using a thulium doped fluoride fibre

Percival, R.M., Szebesta, D., Williams, J.R., Lauder, R.D.T., Tropper, A.C. and Hanna, D.C., (1994) Characterisation of a first window amplifier using a thulium doped fluoride fibre Digonnet, Michel J.F. (ed.) In Doped Fiber Devices and Systems. vol. 2289, The International Society for Optical Engineering.. (doi:10.1117/12.188704).


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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

Item Type: Conference or Workshop Item (Paper)
Digital Object Identifier (DOI): doi:10.1117/12.188704
ISBNs: 9780819416131 (print)
0819416134 (print)
Venue - Dates: Doped Fiber Devices and Systems, United States, 1994-01-01
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Organisations: Physics & Astronomy
ePrint ID: 77173
Date :
Date Event
Date Deposited: 11 Mar 2010
Last Modified: 18 Apr 2017 20:32
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