Title :
Monolithic 1.5 μm hybrid DFB/DBR lasers with 5 nm tuning range
Author :
Westbrook, L.D. ; Nelson, A.W. ; Fiddyment, P.J. ; Collins, J.V.
Author_Institution :
British Telecom Research Laboratories, Ipswich, UK
Abstract :
A new tunable single-longitudinal-mode laser structure is reported. This monolithic hybrid DFB/DBR laser can be electrically tuned over a 5 nm wavelength range. The tuning mechanism employs the depression in the refractive index with injected carrier density, and the tuning range is linked to the period of an internal diffraction grating.
Keywords :
distributed Bragg reflector lasers; distributed feedback lasers; integrated optics; laser tuning; semiconductor junction lasers; hybrid DFB/DBR lasers; hybrid distributed feedback/distributed Bragg reflector laser; injected carrier density; internal diffraction grating; monolithic construction; refractive index; ridge waveguide structure; semiconductor laser; single-longitudinal-mode laser structure; tuning mechanism; tuning range 5 nm; wavelength 1.5 microns;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19840651
