High speed multi-mode fiber transmissions via orthogonal wavefronts

摘要

A system is provided for high speed optical fiber data transmission by generating artificial wavefronts along multiple paths exhibiting spatial mutual orthogonality. Multiple independent signal streams are “structured” over a group of different propagation paths that are coherently organized by wavefront multiplexing and de-multiplexing techniques. Therefore, signal streams with enhanced throughput and reliability may be fully recovered at destinations via embedded diagnostic signals and optimization loops. Multiple optical channels are matched with multiple orthogonal wavefronts created by a signal pre-processor. A receiving end signal post-processor dynamically aligns propagation paths via diagnostic signals and orthogonality of the propagation wavefronts electronically. The multiple optical channels are coherently bonded into a single virtual channel, thereby increasing data bandwidth while reducing interference and unwanted multi-path effects. The wavefront multiplexing and de-multiplexing functions may be performed in a dedicated signal processor or may reside in a general-purpose microprocessor located in the user terminal.

主权项

1. An optical communications system for point-to-point optical communications, comprising:
an optical fiber segment with multiple optical channels interconnecting a transmission end and a reception end; a pre-processor at said transmission end adapted to perform a wavefront multiplexing function to multiplex multiple first parallel inputs into multiple first parallel outputs, wherein each of said first parallel outputs is associated with a combination of said first parallel inputs; and a post processor at said reception end adapted to perform a wavefront de-multiplexing function to de-multiplex multiple second parallel inputs into multiple second parallel outputs, wherein each of said second parallel inputs is associated with a combination of said second parallel outputs.