Title :
InGaAsP/InP vertical directional coupler filter with optimally designed wavelength tunability
Author :
Wu, Chi ; Rolland, C. ; Shepherd, F. ; Larocque, C. ; Puetz, N. ; Chik, K.D. ; Xu, J.M.
Author_Institution :
Dept. of Electr. Eng., Toronto Univ., Ont., Canada
fDate :
4/1/1993 12:00:00 AM
Abstract :
The design of a broad-electrotuning-range (>73 nm) and narrow-bandwidth ( approximately 1.5 nm) InGaAsP/InP tunable directional coupler filter that uses two vertically coupled asymmetric ridge waveguides is described. The filter operates with both current injection and electrorefraction. This is the widest tuning range reported to date for a semiconductor waveguide filter and is obtained with a moderate current level ( approximately 1.1 kA/cm/sup 2/). The tuning range can be extended to >80 nm if the thermal tuning is included.<>
Keywords :
III-V semiconductors; directional couplers; electro-optical devices; gallium arsenide; indium compounds; integrated optics; optical couplers; optical filters; tuning; InGaAsP/InP vertical directional coupler filter; broad-electrotuning-range; current injection; design; electrorefraction; narrow-bandwidth; optimally designed wavelength tunability; semiconductor waveguide filter; thermal tuning; tuning range; vertically coupled asymmetric ridge waveguides; Bandwidth; Directional couplers; Indium phosphide; Laser tuning; Optical devices; Optical filters; Optical receivers; Optical tuning; Stimulated emission; Tunable circuits and devices;
Journal_Title :
Photonics Technology Letters, IEEE
