Title :
Single-mode behaviour of a multimode 1.55 μm laser with a fibre grating external cavity
Author :
Park, C.A. ; Rowe, C.J. ; Buus, J. ; Reid, D.C.J. ; Carter, Adam ; Bennion, I.
Author_Institution :
Plessey Research (Caswell) Ltd., Towcester, UK
Abstract :
A 1.55 μm DCPBH multimode laser has been made to oscillate in a single longitudinal mode by feedback from a fibre grating which acts as an external cavity for line narrowing and as a frequency-selective component to give single-mode behaviour. Linewidths of less than 10kHz and side-mode rejection ratios of 320 have been achieved.
Keywords :
diffraction gratings; feedback; fibre optics; laser cavity resonators; laser modes; laser transitions; semiconductor lasers; spectral line breadth; >10 kHz linewidths; 1.55 micron; 1.55 micron wavelength; DCPBH; double channel; feedback; fibre grating external cavity; frequency-selective component; line narrowing; multimode laser; oscillate; planar buried heterostructure; semiconductor lasers; single longitudinal mode; single-mode behaviour;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19860776
