Title :
Noise characteristics of Er/sup 3+/-doped fiber amplifiers pumped by 0.98 and 1.48 mu m laser diodes
Author :
Hamada, Mohamed ; Shimizu, Makoto ; Okayasu, Masanobu ; Takeshita, Tatsuya ; Horiguchi, Masaharu ; Tachikawa, Yoshiaki ; Sugita, Etsuji
Author_Institution :
NTT Opto-Electron. Lab., Ibaraki, Japan
fDate :
3/1/1990 12:00:00 AM
Abstract :
Measured noise characteristics of Er/sup 3+/-doped optical fiber amplifiers pumped by 0.98- and 1.48- mu m laser diodes (LDs) are reported. The noise figures estimated from the beat noise between signal and spontaneous emission are 3.2 dB for pumping by 0.98- mu m LD and 4.1 dB for pumping by 1.48- mu m LD. The beat noise between spontaneous emission components and the spontaneous shot noise for the 0.98- mu m pumping are lower than those for the 1.48- mu m pumping.<>
Keywords :
erbium; fibre optics; optical pumping; random noise; solid lasers; 0.98 micron; 1.48 micron; Er/sup 3+/-doped fiber amplifiers; beat noise; laser diodes; laser pumping; noise characteristics; noise figures; spontaneous emission; spontaneous emission components; spontaneous shot noise; Diode lasers; Erbium; Laser excitation; Noise generators; Noise measurement; Optical fiber polarization; Optical noise; Power measurement; Radio frequency; Semiconductor device noise;
Journal_Title :
Photonics Technology Letters, IEEE
