Title :
Tunable twin-guide (DFB) laser with buried facets for reduced spectral linewidth broadening
Author :
Schmidt, B. ; Hakimi, R. ; Illek, S. ; Amann, M.-C.
Author_Institution :
Siemens AG, Munich, Germany
fDate :
7/31/1997 12:00:00 AM
Abstract :
The spectral linewidth of continuously wavelength tunable laser diodes has been significantly reduced by the buried facets technique. Embedding the λg=1.3 μm InGaAsP tuning region of a λ=1.55 μm tunable twin-guide distributed feedback laser entirely in high-bandgap InP suppresses the electronic 1/f noise by more than 10 dB, yielding a spectral linewidth up to a factor of two smaller during tuning
Keywords :
1/f noise; III-V semiconductors; distributed feedback lasers; gallium arsenide; indium compounds; laser noise; laser tuning; semiconductor lasers; 1.3 micrometre; 1.55 micrometre; III-V semiconductors; InGaAsP-InP; buried facets; continuously wavelength tunable devices; distributed feedback laser; electronic 1/f noise; spectral linewidth broadening; tunable twin-guide DFB laser;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19970927
