Title :
Spectral linewidth broadening in Er-doped-fibre amplifiers measured with less than 1.4 kHz linewidth light source
Author :
Okamura, Hiroyuki ; Iwatsuki, Katsumi
Author_Institution :
NTT Transmission Syst. Labs., Kanagawa, Japan
Abstract :
Spectral linewidth broadening in Er-doped-fibre amplifiers is measured by utilising a delayed self-heterodyne interferometer with 1.4 kHz resolution in the 1550 nm range. Though the noise floor is broadened, no broadening is observed at the 3 dB down point.
Keywords :
erbium; fibre lasers; spectral line breadth; 1.4 kHz; 1.4 kHz linewidth light source; 1550 nm; Er-doped-fibre amplifiers; delayed self-heterodyne interferometer; noise floor; spectral linewidth broadening measurement;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19901271
