Novel method for centre wavelength tuning of silica waveguide type Mach-Zehnder multi/demultiplexers

15 February 1990

journal article
Published by Institution of Engineering and Technology (IET) in Electronics Letters

Vol. 26 (4) , 251-253
https://doi.org/10.1049/el:19900168

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 20nm, the centre wavelength is tuned about 3nm and the results closely agree with the calculation.

Keywords

SILICA WAVEGUIDE TYPE MACH-ZEHNDER MULTI/DEMULTIPLEXERS
LASER BEAM
SIO2-TIO2 GLASS
WAVELENGTH DIVISION MULTIPLEXING
IRRADIATING
CENTRE WAVELENGTH TUNING
MACH-ZEHNDER INTERFEROMETER
CHANNEL SPACING

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