METHOD AND RELATED APPARATUS FOR COHERENT OPTICAL TRANSMISSION

摘要

In order to provide very fast tuning of an coherent optical receiver, an apparatus for use in optical telecommunications includes a coherent optical receiver with a converter stage adapted to convert a received optical signal to an electrical signal by down-converting the received optical signal in frequency using a local oscillator signal, an analog/digital converter stage adapted to sample the converted signal, a digital processor adapted to process the sampled signal to restore a transmitted data signal, and a wavelength selector adapted to select from a distribution network an unmodulated light signal at a configurable wavelength for use as the local oscillator signal. The distribution network is an optical bus system in the form of a fiber ring.

主权项

1. An apparatus for use in optical telecommunications, comprising:
a coherent optical receiver with a converter stage adapted to convert a received optical signal to an electrical signal by down-converting the received optical signal in frequency using a local oscillator signal; an analog/digital converter stage adapted to sample the converted signal; a digital processor adapted to process the sampled signal to restore a transmitted data signal; and a wavelength selector adapted to select from a distribution network an unmodulated light signal at a configurable wavelength for use as said local oscillator signal, wherein said distribution network is an optical bus system in the form of a fiber ring.