COHERENT OPTICAL TRANSMITTER AND COHERENT OPTICAL RECEIVER

摘要

The invention relates to a coherent optical transmitter (200), comprising: a plurality of filters configured for filtering a plurality of data signals, the plurality of filters providing a plurality of filtered data signals, wherein one of the filters is configured for filtering according to a first filtering scheme, and wherein the other ones of the filters are configured for filtering according to a second filtering scheme; a plurality of modulators configured for modulating the plurality of filtered data signals onto a plurality of optical subcarriers (λ1,...,λk,...,λn), the plurality of modulators providing a plurality of modulated optical subcarriers (λ̃1,...,λ̃k,...,λ̃n); and a multiplexer (207) configured for multiplexing the plurality of modulated optical subcarriers (λ̃ 1,...,λ̃k,...,λ̃n) to a super-channel optical signal (206). The invention further relates to a coherent optical receiver (300), comprising: a plurality of coherent optical front ends configured for partitioning a super-channel optical signal (306) into a plurality of sub-1 channel optical signals, the plurality of coherent optical front ends being driven by a plurality of optical subcarriers (λ1,...,λk,...,λn); and a processing circuit (303) coupled to the plurality of coherent optical front ends, the processing circuit (303) being configured to adjust the plurality of coherent optical front ends based on timing information (317) of a predetermined one of the plurality of sub-channel optical signals.