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Successful 112 Gbit/s PDM-CSRZ-DQPSK transmission with coherent detection and digital electronic DSP post processing is reported over a 1730 km SSMF plus 300 km DCF field installed DWDM-system. A modular network approach with co-propagating 10 Gbit/s WDM-channels is achieved.
8 times 107 Gbit/s DWDM transmission is achieved over a 500 km field installed fibre link in the Deutsche Telekom network, indicating high link utilization of 1 bit/s/Hz spectral efficiency, needed for Terabit/s network capacity, required in a mid-term timeframe.
PM-RZ-DQPSK with direct detection and fast optical polarisation tracking achieves 6dB noise margin over a long-haul field link. The crosstalk by 10&40G OOK channels at 50GHz spacing is analysed for high channel power.
Optical systems and technologies have been radically changing the telecommunication networks for past 15 years; today wavelength division multiplexing (WDM) technology, optical amplifiers, and simple optical switching elements like optical add-drop multiplexers (OADMs) are used in the backbone networks of all operators worldwide. Optical systems nowadays provide the basis for cost-effective transmission...
A low-cost Gigabit Ethernet Metro Domain interconnection with distances up to 1700 km using simple & low-cost GBICs as a plug and play solution over a WDM-transmission link based on normalised fibre sections is demonstrated.
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