Title :
Intermode tuning characteristics of an InGaAsP laser with optical feedback from an external grating reflector
Author :
Binder, J.O. ; Cormack, G.D. ; Somani, A.
Author_Institution :
Alberta Telecommun. Res. Centre, Edmonton, Alta., Canada
Abstract :
The spectral characteristics are reported of one-side antireflection coated 1.3 mu m InGaAsP lasers exposed to strong feedback from an external grating, when the center wavelength of reflection of the grating is tuned continuously from one solitary laser diode longitudinal mode to the adjacent lower frequency mode. The effects of different residual reflectivities of the coated facet on the tuning characteristics of the laser between internal cavity modes are shown to agree with theory. Bistability in the tuning characteristic is explained. A dependence of the stability of single-mode oscillation and of the linewidth on the detuning from the solitary laser modes is theoretically explained.<>
Keywords :
III-V semiconductors; antireflection coatings; diffraction gratings; gallium arsenide; indium compounds; laser cavity resonators; laser theory; laser tuning; mirrors; optical bistability; semiconductor junction lasers; 1.3 micron; III-V semiconductor; InGaAsP lasers; antireflection coating; bistability; center wavelength; coated facet; external grating reflector; intermode tuning characteristics; internal cavity modes; linewidth; lower frequency mode; optical feedback; residual reflectivities; single-mode oscillation; solitary laser diode longitudinal mode; spectral characteristics; Gratings; Laser feedback; Laser modes; Laser stability; Laser theory; Laser tuning; Optical bistability; Optical feedback; Optical reflection; Optical tuning;
Conference_Titel :
Communications, Computers and Signal Processing, 1989. Conference Proceeding., IEEE Pacific Rim Conference on
Conference_Location :
Victoria, BC, Canada
DOI :
10.1109/PACRIM.1989.48297
