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We outline the hardware architecture of coherent optical receivers supporting Gt40 Gb/s data rates and extract constraints for compatible signal processing algorithms. Additionally a chipset layout for a 40 Gb/s digital coherent polarization-multiplexed QPSK receiver is presented.
This paper focuses on the recent progress in coherent optical communication using advanced digital signal processing (DSP) technology. In particular the design of DSP components is presented which are required to realize a 10 Gbaud synchronous optical quadrature phase shift keying (QPSK) transmission system. Additionally the measurement results of a preliminary synchronous QPSK transmission setup...
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