Title :
Dispersion of linewidth-broadening factor in 1.5 μm laser diodes
Author_Institution :
British Telecom Research Laboratories, Ipswich, UK
Abstract :
Measurements which demonstrate the strong dependence of the linewidth-broadening factor α on photon energy in 1.5 μm lasers are reported, α was found to vary between 3 and 11 over a 40 meV energy range. The consequences for the linewidth and transient wavelength chirping in 1.5 μm DFB lasers, where the operating wavelength may be different from the peak gain wavelength, are examined.
Keywords :
III-V semiconductors; distributed feedback lasers; gallium arsenide; gallium compounds; indium compounds; laser modes; optical dispersion; semiconductor junction lasers; spectral line breadth; DFB lasers; InGaAsP lasers; laser diodes; linewidth-broadening factor; optical dispersion; photon energy; semiconductor laser; transient wavelength chirping; wavelength 1.5 microns;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19850722
