Patent ID: 8417069
Filing Date: 2013-04-09
Classification: H04B

Abstract:
1. A system, comprising: a laser configured to produce a laser beam; an optical splitter optically coupled to said laser and splitting said laser beam received from said laser into a plurality of laser beams; a modulator optically coupled to one of said plurality of laser beams and a second modulator operating in parallel with said modulator and optically coupled to another of said plurality of laser beams; a length of multi-mode fiber optically coupled to said modulator at the proximal end of said fiber and a second length of multi-mode fiber optically coupled to said second modulator at the proximal end of said second fiber; and a phase mask optically coupled to the distal end of said fiber and filtering out modes propagating through said fiber other than a selected mode and a second phase mask operating in parallel with said phase mask and optically coupled to the distal end of said second fiber and filtering out modes propagating through said second fiber other than a second selected mode, said second selected mode differing from said selected mode.