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Voltage controlled N*N coupled waveguide switch and power splitter

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2 Author(s)
Ruschin, S. ; Tel-Aviv Univ., Israel ; Meshulach, D.

It is shown that it is possible to accomplish near-complete power transfer functions in N coupled waveguide arrays by controlling a set of N voltages applied to the waveguides. Switching of the power from an excited center waveguide into any output channel in a five waveguide array and splitting of power into any output combination of channels are demonstrated. In all cases, the crosstalk is better than -16 dB, and the power splitting efficiency ratio differs from 1 on an amount of not more than 15%. The length of the device is arbitrarily set. The sensitivity of the splitting functions to small random changes of the applied voltages is investigated.<>

Published in:

Photonics Technology Letters, IEEE  (Volume:5 ,  Issue: 2 )