Title :
High gain two-stage amplification with erbium-doped fibre amplifier
Author :
Masuda, H. ; Takada, A.
Author_Institution :
NTT Transmission Syst. Labs., Kanagawa, Japan
fDate :
5/1/1990 12:00:00 AM
Abstract :
Unsaturated net gain of 51 dB is obtained for 1.551 mu m signal light by using two-stage erbium-doped fibre amplifiers pumped by 1.48 mu m laser diodes. This is achieved by using both an optical bandpass filter to suppress amplified spontaneous emission from the first stage amplifier and a bidirectional pumping scheme in the second amplifier to increase saturation output power.
Keywords :
amplification; erbium; laser transitions; optical fibres; optical pumping; solid lasers; 1.48 micron; 1.551 micron; 51 dB; Er 3+ doped optical fibre; bidirectional pumping scheme; high gain type; laser diode pump; optical bandpass filter; solid laser; two-stage amplification;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19900432
