Surveillance method of optical amplifier-repeater transmission s

Surveillance method of optical communication line

Surveillance system of a multi-wavelength ring network

Switch employing partially reflective coating

Switchable optical network unit

Switchable optical network unit

Switchable optical network with improved transmission ability

Switchable wavelength router

Switchable wavelength router

Switched optical network

Switched video architecture for an optical fiber-to-the-curb tel

Switching system of optical transmission lines for protecting fr

Symmetrical overfilled polygon laser scanner

Symmetrical prism beam deflector

Synchronization apparatus for an optical communications network

Synchronization method as well as synchronizing units, terminal

Synchronized XY laser scanner

Synchronizing signal detecting method and device for...

Synchronous amplitude modulation for improved performance of...

Synchronous modulation method and apparatus for in-line regenera