TUNEABLE AWG DEVICE FOR MULTIPLEXING AND DEMULTIPLEXING SIGNALS AND METHOD FOR TUNING SAID DEVICE

摘要

The invention relates to a tuneable AWG device for multiplexing and demultiplexing signals and to a method for tuning said device. The inventive device is an integrated-optic device which enables a signal made up of a plurality of signals multiplexed by wavelength division to be injected through an input port such as to obtain, at the output, a demultiplexed signal with each component exiting via a different port. If the multiplexed signal is changed to another input port, the demultiplexed signals appear at different ports, but always according to a pre-determined relationship. The invention makes it possible to tune the AWG device by using stationary acoustic waves such that the acoustically excited optical guides are excited by a linear acoustic wave.

主权项

1. A tunable AWG (Arrayed Waveguide Grating) device for signal multiplexing and demultiplexing comprising:
one or more input ports consisting of optical waveguides, a plurality of output ports consisting of optical waveguides, a first optical coupler for optical input port mixing, a second optical coupler for the mixing and output of optical output ports, a set of optical waveguides with increasing lengths connecting the first optical coupler to the second optical coupler so as to enable the multiplexing/demultiplexing of signals transmitted,the tunable AWG device comprising:
an adapted support for surface acoustic wave transmission for the acoustic excitation of either:
a set of optical waveguides connecting the first and second optical coupler these being sorted by increasing length, orthe optical waveguides of the input ports, the excitable waveguides being spaced apart on the support, and at least one acoustic excitation transducer arranged on the support surface acoustic wave transmission, wherein said acoustic excitation transducer is adapted to excite an acoustic standing wave transversal to the optical waveguides arranged on the support such that the acoustic wave, discretized at the points of the cross section of the acoustically excited optical waveguides is linearized.