Communications network

   
   

A device and method for quantifying the amount of jitter experienced by an optical data pulse. During transmission data pulses may suffer jitter. Their arrival time at a node may be temporally offset from its predicted arrival time. Data pulses are timed so that they may be received at a detector disposed downstream of said node at a predetermined time. The device includes an optical AND gate, which has a first input arranged to receive a chirped pulse having a duration T, and whose wavelength varies in a monotonically over the duration of the pulse, the node having a second input arranged to receive a second data pulse. The node includes an optical gate arranged to generate an output pulse in response to the chirped pulse and the data pulse received at the first and second inputs, respectively, having a wavelength dependent upon the time at which the data pulse is received at the second input.

 
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< Liquid crystal display component and transparent conductive substrate suitable for the same

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> Method of magnetic recording/reproducing

> Reflection liquid crystal display capable of displaying pictures in improved color purity

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