Synchronous digital communications system

System and apparatus for dropping and adding optical data...

System and method for managing system margin

System and method for mitigating dispersion slope in an...

System and method for modularly scalable architecture for...

System and method for monitoring and controlling light...

System and method for protecting traffic in a hubbed optical...

System and method for providing failure protection in...

System and method for secure multiple wavelength...

System and method for setting a tunable filter in an optical...

System and method for spectral loading an optical...

System and method for tunable chromatic dispersion compensation

System and method for use of a variable optical attenuator...

System and method for wave vector multiplexed laser...

System and methods for quantum key distribution over WDM links

System and methods for quantum key distribution over WDM links

System for accessing a wavelength-division-multiplexed...

System for checking the operation of an optical filter

System for compensating for chromatic dispersion and...

System for distributing information and energy using fiber...