Title :
Reliable laboratory transmitter with submegahertz linewidth
Author :
Wenke, G. ; Patzak, E. ; Meissner, Paul L.
Author_Institution :
Heinrich-Hertz-Institut fÿr Nachrichtentechnik Berlin GmbH, Berlin, West Germany
Abstract :
An external-cavity transmitter configuration is introduced using a semiconductor laser at 1.3 ¿m wavelength, a spherical reflector for laser mode selection and a semitransparent Au-coated GRIN-rod lens for linewidth reduction. At 1.45 mW output power a linewidth of 700 kHz and a laser sidemode suppression of 30 dB is achieved.
Keywords :
gradient index optics; laser cavity resonators; laser modes; laser transitions; optical communication equipment; semiconductor junction lasers; spectral line breadth; transmitters; 1.3 micron wavelength; 1.45 mW output power; 30 dB sidemode suppression; 700 kHz linewidth; Au coating; GRIN-rod lens; external-cavity transmitter configuration; laser mode selection; linewidth reduction; optical communication equipment; semiconductor laser; semitransparent; spherical reflector; submegahertz linewidth;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19860144
