Who are the best fiber optics manufacture?

To single out a company would be grossly unfair since in such business the players are, usually, respected industrial corporations with impeccable values reputations. State of the art fiber optics cannot be completed in a garage shed and vast investments have to be made in equipment, plant and human resources to produce optics of any type.  

In general quality of fibers in the market is exceptionally high and it should be said that the failures and disasters which may have happened have had nothing to do with the quality of the fibers but along with the handling and application of systems.