Highly efficient Er-doped fibre amplifiers pumped in 660 nm band

5 December 1991

journal article
Published by Institution of Engineering and Technology (IET) in Electronics Letters

Vol. 27 (25) , 2319-2320
https://doi.org/10.1049/el:19911436

Abstract

High gain coefficient in an erbium-doped fibre amplifier, 3.8 dB/mW at 1.536 μm and 2.3 dB/mW at 1.552 μm, is achieved for a pump wavelength of 664 nm by using an erbium-doped fibre with a high numerical aperture of 0.285 and thermally-diffused expanded core fibre ends. The gain at 1.536 μm reaches 30 and 35 dB for launched pump powers of 10 and 15 mW, respectively.

Keywords

1.536 MICRON
PUMP WAVELENGTH
664 NM
30 TO 36 DB
1.552 MICRON
10 TO 15 MW
GAIN COEFFICIENT
THERMALLY-DIFFUSED EXPANDED CORE FIBRE ENDS
PUMP POWERS
FIBRE AMPLIFIER
GAIN
NUMERICAL APERTURE

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