Unrepeatered 100 Gbit/s per channel wave-divisionmultiplexed dual-polarization-QPSK transmission with random distributed feedback fiber laser-based Raman amplification using fiber Bragg grating is demonstrated. Transmission of 1.4 Tb/s (14 × 100 Gbit/s) was possible in 352.8 km link and 2.2 Tb/s (22 × 100 Gbit/s) was achieved in 327.6 km without employing remote optically pumped amplifier or speciality fibers.
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Funding: EPSRC Programme Grant UNLOC (Unlocking the capacity of optical communications) EP/J017582/1; EPSRC Grant COSINE EP/I012702/1; Spanish MICINN Grant RAMAS, TEC2011-27314
- coherent detection
- distributed Raman amplification
- random DFB fiber laser
- unrepeatered transmission