University of Southampton

Periklis Petropoulos

David John Richardson

Morten Ibsen

Radan Slavik

Ju Han Lee

Joseph Kakande

Francesca Parmigiani

Peh Choing Teh

An optical regenerator for regenerating a multi-level phase encoded signal. A first non-linear medium (HNLF) generates a comb of frequency harmonics from the signal under the action of a coherent pump, each component bearing the phase encoded data. A filter selects the first and (M&#x2212;1)th order components. The filtered signal is then input to a second non-linear medium (HNLF) where a further pump is applied, to coherently add the first and (M&#x2212;1)th order components and regenerate the signal by reducing phase noise.

Optical signal processing

Apparatus for providing timing jitter tolerant optical modulation of a first signal by a second signal, the first signal having a first wavelength, the second signal including a plurality of second signal pulses having a second pulse shape and a second wavelength. The apparatus includes a first signal input port, a second signal input port, a coupler, a grating and a non-linear optical device. The apparatus is configured to direct the second signal at the second signal input port to the non-linear optical device via the coupler and the grating, and to direct the first signal at the first signal input port to the non-linear optical device. The grating is a superstructured fibre Bragg grating that converts the second signal pulses into intermediary pulses each having an intermediary pulse shape. The intermediary pulse shape is such that it provides a switching window within the non-linear optical device.

Apparatus for providing timing jitter tolerant optical modulation of a first signal by a second signal

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Southampton, United Kingdom

Periklis Petropoulos