Title :
High sensitivity 10 Gbit/s optical receiver using two cascaded EDFA preamplifiers
Author :
Blair, L.T. ; Nakano, H.
Author_Institution :
Central Res. Lab., Hitachi Ltd., Tokyo, Japan
fDate :
5/9/1991 12:00:00 AM
Abstract :
A cascaded preamplifier configuration has been introduced using two erbium doped fibre amplifiers (EDFAs). A low noise figure of 4.5 dB and a high net gain of 27.0 dB, at a signal wavelength of 1.553 mu m, 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 :
digital communication systems; fibre lasers; optical communication equipment; optical fibres; preamplifiers; receivers; 1.553 micron; 10 Gbit/s; 27 dB; 4.5 dB; Er doped fibre amplifiers; cascaded preamplifier; high sensitivity receiver; optical receiver;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19910523
