High sensitivity 10 Gbit/s optical receiver using two cascaded EDFA preamplifiers
- 9 May 1991
- journal article
- Published by Institution of Engineering and Technology (IET) in Electronics Letters
- Vol. 27 (10) , 835-836
- https://doi.org/10.1049/el:19910523
Abstract
A cascaded preamplifier configuration has been introduced using two erbium doped fibre amplifiers. A low noise figure of 4.5 dB and a high net gain of 27.0 dB, at a signal wavelength of 1.553 μm, have led to the highest reported receiver sensitivity to date of –31.1 dBm (606 photon/bit). This represents an improvement of 18.8 dB over the sensitivity without an optical amplifier.Keywords
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