Title :
Laser linewidth measurement using a Mach-Zehnder interferometer and an optical amplifier
Author :
Constable, J.A. ; White, Ian H.
Author_Institution :
Sch. of Phys., Bath Univ., UK
fDate :
1/20/1994 12:00:00 AM
Abstract :
Laser linewidth measurements have been carried out using a novel form of unbalanced fibre Mach-Zehnder interferometer, in which the interference signal is frequency shifted by an optical amplifier, using a resonating electrical feedback loop. This method offers stable, high sensitivity measurement of the linewidths of coherent laser sources.
Keywords :
distributed feedback lasers; fibre optic sensors; laser variables measurement; light interferometry; measurement by laser beam; semiconductor lasers; DFB laser; Mach-Zehnder interferometer; coherent laser sources; high sensitivity measurement; interference signal frequency shifting; laser linewidth measurement; optical amplifier; resonating electrical feedback loop; unbalanced fibre Mach-Zehnder interferometer;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19940089
