Pumping scheme for ultra-wideband WDM transmission using distributed Raman amplification

Ultra-flat wideband single-pump Raman-enhanced parametric amplification.

We experimentally optimize a single pump fiber optical parametric amplifier in terms of gain spectral bandwidth and gain variation (GV). We find that optimal performance is achieved with the pump tuned to the zero-dispersion wavelength of dispersion stable highly nonlinear fiber (HNLF). We demonstrate further improvement of parametric gain bandwidth and GV by decreasing the HNLF length. We disc...

Transmission performance improvement using random DFB laser based Raman amplification and bidirectional second-order pumping.

We demonstrate that a distributed Raman amplification scheme based on random distributed feedback (DFB) fiber laser enables bidirectional second-order Raman pumping without increasing relative intensity noise (RIN) of the signal. This extends the reach of 10 × 116 Gb/s DP-QPSK WDM transmission up to 7915 km, compared with conventional Raman amplification schemes. Moreover, this scheme gives the...

Parallel WDM Transmission for Ultra-high Bandwidth

Wavelength Division Multiplexing (WDM) is a technology that multiplexes a number of optical signals in a single optical fiber achieving very high aggregate bandwidth. Each optical signal provides a bitrate well above 1 Gbit/s, and thus the aggregate information capacity per fiber exceeds Tbit/s. This technology is also formidable for inter-computer communication where ultra-high bandwidth needs...

Design Criteria for Ultra Wideband Distributed Amplifiers

This report presents the analysis of lumped, lossless networks configured to emulate ideal transmission line characteristics over broad frequency passbands. The filter sections are configured to allow for the realization of distributed amplifiers capable of processing signal frequencies extending through tens of gigahertz. The principle advantage of the distributed approach to broadband amplifi...

Fiber Raman Amplification in Ultra-high Speed Ultra-long Haul Transmission: Gain Profile, Noises and Transmission Performance