Title :
Gain-coupled DFB lasers with truncated quantum well second-order gratings
Author :
Adams, D.M. ; Woods, I. ; White, J.K. ; Finlay, R. ; Goodchild, D.
Author_Institution :
High Performance Opt. Component Solutions, Nortel Networks, Ottawa, Ont., Canada
fDate :
12/6/2001 12:00:00 AM
Abstract :
Static and dynamic properties of in-phase gain-coupled multiple quantum well distributed feedback (DFB) lasers with second-order gratings have been measured at 1.55 μm. Devices with both facets antireflection coated and with a κL product between 4 and 5 have achieved a sidemode suppression ratio of over 63 dB. Relative intensity noise measurements have confirmed that the dynamic properties of second-order truncated well gain-coupled (GC)-DFB lasers are comparable to those with first-order truncated-well gratings
Keywords :
MOCVD; antireflection coatings; diffraction gratings; distributed feedback lasers; laser accessories; laser beams; laser feedback; laser modes; laser noise; laser variables measurement; optical fabrication; quantum well lasers; 1.55 micron; DFB lasers; antireflection coated facets; dynamic properties; facets; first-order truncated-well gratings; gain-coupled DFB lasers; in-phase gain-coupled multiple quantum well distributed feedback lasers; relative intensity noise measurements; second-order gratings; second-order truncated well gain-coupled DFB lasers; sidemode suppression ratio; static properties; truncated quantum well second-order gratings;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20011020
