Title :
Single and tunable dual-wavelength operation of an InGaAs-GaAs ridge waveguide distributed Bragg reflector laser
Author :
Roh, S.D. ; Lee, K.E. ; Hughes, J.S. ; Coleman, J.J.
Author_Institution :
Dept. of Electr. & Comput. Eng., Illinois Univ., Urbana, IL, USA
Abstract :
The design and operation of an InGaAs-GaAs asymmetric cladding ridge waveguide (RW) distributed Bragg reflector (DBR) laser that can be operated in both a single-wavelength mode and a stable, dual-wavelength mode with tunable mode pair separation are reported. The asymmetric cladding RW-DBR laser consists of a conventional DBR laser with an additional, separate tuning contact pad over a part of the grating. The laser operates on a single-wavelength with no current applied to the tuning DBR pad, and dual-wavelength operation is achieved when current is applied to the tuning DBR pad. Tunable mode pair separations as small as /spl sim/13 nm and as large as /spl sim/17 nm can be achieved in various tuning conditions.
Keywords :
III-V semiconductors; diffraction gratings; distributed Bragg reflector lasers; gallium arsenide; indium compounds; laser modes; laser tuning; ridge waveguides; semiconductor lasers; waveguide lasers; 13 to 17 nm; InGaAs-GaAs; InGaAs-GaAs asymmetric cladding ridge waveguide DBR laser; asymmetric cladding RW-DBR laser; design; grating sections; operation; ridge waveguide distributed Bragg reflector laser; separate tuning contact pad; single-wavelength mode; stable dual-wavelength mode; tunable mode pair separation; tuning conditions; Distributed Bragg reflectors; Distributed feedback devices; Gratings; Laser modes; Laser tuning; Optical tuning; Optical waveguides; Surface emitting lasers; Tunable circuits and devices; Waveguide lasers;
Journal_Title :
Photonics Technology Letters, IEEE
