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25th September 2015

To handle the recent increase in data traffic, in optical telecommunication systems multiple optical signals are sent onto a single fiber and then must be de-multiplexed with great accuracy, namely separated with a controlled power level on multiple channels. Scientists at the Fraunhofer IPMS, Dresden, Germany, have developed a unique concept of on-chip integrated liquid crystal waveguides, which – when voltage is properly set on a specific electrode arrangement – are able to rapidly and precisely control the optical power transmitted from one fiber to another.

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