Apparatus for measuring the characteristics of an optical fiber
Apparatus for monitoring optical signal-to-noise ratio
Apparatus for monitoring polarization-mode dispersion and...
Apparatus for optical path monitoring and an optical shutter...
Arrangement and method for testing fiber optic...
Arrangement and method for testing fiber optic...
Arrangement for characterizing and reducing multi-path...
Automatic optical power management in optical communications...
Automatic power restoring method and optical communication...
Automatic power restoring method and optical communication...
Automatic protection system for an optical transmission system