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 to be transported from computer to computer and within a cluster and where redundancy or parallel computation is required. However, as the bit rate increases, the link complexity increases as well as cost, both of which are very critical in computer applications. In this paper we present a WDM parallel transport method by which ultra-high bandwidth is achieved yet with low modulation bit-rates, low power source lasers and low complexity. This method also minimizes dispersion and non-linear phenomena, it does not degrade the quality of signal, it increases transmission reliability and it reduces cost per transported bandwidth in short and in medium-haul. Key-Words: Supercomputing networks, Ultra-high rates, Wavelength-bus, optical computer networks