Title :
Axial profile of grating coupled radiation from second-order DFB lasers with phase shifts
Author :
Kinoshita, Jun-Ichi
Author_Institution :
Toshiba Corp., Yokohama, Japan
fDate :
3/1/1990 12:00:00 AM
Abstract :
Axial profiles of the grating-coupled radiation field emitted in a direction normal to the surface of distributed-feedback (DFB) lasers with phase-shifted second-order corrugation are theoretically analyzed. The profiles are calculated for nonreflecting DFB lasers with the following phase shifts: λ/4 shift, two λ/8 shifts, and two 3λ/8 shifts. It is demonstrated that the radiation field can be controlled by changing the phase shifts. This result suggests a new method for modulating the surface emission of a DFB laser
Keywords :
diffraction gratings; distributed feedback lasers; optical modulation; semiconductor junction lasers; λ/4 shift; λ/8 shifts; 3λ/8 shifts; distributed feedback lasers; grating coupled radiation; laser phase shift control; laser surface emission; nonreflecting DFB lasers; phase shifts; phase-shifted second-order corrugation; radiation field; radiation field axial profiles; second-order DFB lasers; semiconductor lasers; surface emission modulation; Gratings; Interference; Laser beams; Laser modes; Laser theory; Optical coupling; Optical surface waves; Stimulated emission; Surface emitting lasers; Vertical cavity surface emitting lasers;
Journal_Title :
Quantum Electronics, IEEE Journal of
