Title :
Low-crosstalk penalty MZI space switch with a 0.64-mm phase shifter using quantum-well electrorefraction
Author :
Dorren, B.H.P. ; Haverkort, J.E.M. ; Prasanth, R. ; Groen, F.H. ; Wolter, J.H.
Author_Institution :
Dept. of Phys., Eindhoven Univ. of Technol., Netherlands
Abstract :
We investigate Mach-Zehnder interferometric (MZI) space switches with quantum-well phase shifters. We find that the minimum phase shifter length is limited by additional crosstalk due to electroabsorption-induced imbalance in the MZI. This criterion also provides an optimal detuning between the bandgap and the operating wavelength of the MZI. Finally, we present a novel MZI with an ultrashort 0.64-mm phase shifter.
Keywords :
III-V semiconductors; Mach-Zehnder interferometers; electro-optical switches; electroabsorption; gallium arsenide; indium compounds; integrated optics; optical communication equipment; optical couplers; optical crosstalk; optical phase shifters; optimisation; quantum confined Stark effect; quantum well devices; semiconductor quantum wells; 0.64 mm; InGaAs-InP; Mach-Zehnder interferometric space switches; bandgap; crosstalk; electroabsorption-induced imbalance; low-crosstalk penalty MZI space switch; minimum phase shifter length; operating wavelength; optimal detuning; phase shifter; quantum-well electrorefraction; quantum-well phase shifters; ultrashort phase shifter; Insertion loss; Integrated optics; Optical crosstalk; Optical interferometry; Optical losses; Optical switches; Phase shifters; Phase shifting interferometry; Quantum wells; Telecommunication switching;
Journal_Title :
Photonics Technology Letters, IEEE
