Title :
Novel method for centre wavelength tuning of silica waveguide type Mach-Zehnder multi/demultiplexers
Author :
Uetsuka, H. ; Kurosawa, Masashi ; Imoto, Keisuke
Author_Institution :
Cable Res. Lab., Hitachi Cable Ltd., Ibaraki, Japan
Abstract :
A novel method for tuning the centre wavelength of silica waveguide type Mach-Zehnder multi/demultiplexers (MUX/DEMUXs) has been devised. This tuning is achieved by irradiating a CO2 laser beam onto either arm of the Mach-Zehnder interferometer. In a MUX/DEMUX for channel spacing of 20 nm, the centre wavelength is tuned about 3 nm and the results closely agree with the calculation.
Keywords :
frequency division multiplexing; light interferometry; multiplexing equipment; optical communication equipment; optical waveguides; silicon compounds; tuning; Mach-Zehnder interferometer; SiO 2-TiO 2 glass; centre wavelength tuning; channel spacing; irradiating; laser beam; silica waveguide type Mach-Zehnder multi/demultiplexers; wavelength division multiplexing;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19900168
