Title :
Tunable wavelength-selection switch and multiplexer/demultiplexer based on asymmetric silica-on-silicon Mach-Zehnder interferometer
Author :
Lai, Q. ; Lanker, M. ; Hunziker, W. ; Melchior, H.
Author_Institution :
Inst. of Quantum Electron., Swiss Fed. Inst. of Technol., Zurich, Switzerland
fDate :
2/5/1998 12:00:00 AM
Abstract :
Wavelength multi/demultiplexers with 1 nm spacing have been realised with an asymmetric 2×2 Mach-Zehnder interferometer in silica-on-silicon. Heating one arm of the interferometer allows for wavelength tuning or wavelength switching of the outputs. Switching or tuning over 1 nm is achieved with only 95 mW within rise and fall times added to of 150 and 220 μs, respectively. Tuning and switching can be separated, as temperature changes in the substrate also result in wavelength shifts
Keywords :
Mach-Zehnder interferometers; demultiplexing equipment; elemental semiconductors; multiplexing equipment; optical communication equipment; optical fibre communication; photonic switching systems; silicon; silicon compounds; thermo-optical effects; wavelength division multiplexing; 150 mus; 220 mus; 95 mW; SiO2-Si; asymmetric 2×2 Mach-Zehnder interferometer; fall time; multiplexer/demultiplexer; rise time; tunable wavelength-selection switch; wavelength shifts; wavelength switching; wavelength tuning;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19980208
