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Demonstration of CoWDM using DPSK modulator array with injection-locked lasers

Demonstration of CoWDM using DPSK modulator array with injection-locked lasers

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A practical implementation of coherent wavelength division multiplexing (CoWDM) is demonstrated for the first time using injection-locked lasers and a DPSK modulator array. For a 31.99 Gbit/s system (three subcarriers at 10.664 Gbit/s) the null-to-null spectral bandwidth was only 42.656 GHz and the average receiver sensitivity measured was −33.5 dBm when all subcarrier phases were optimised.


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