Efficient use of trusted third parties for additional...

Electrically looped back, fault emulating transceiver module

Error detection and recovery of an optical network element

Error mitigation system using line coding for optical WDM...

Extinction ratio determination using duty cycle modulation

Fast testing system for optical transceiver and testing...

Fault detection and isolation in an optical network

Fault detection and isolation in an optical network

Fault forwarding in an optical network

Fault isolation technique for optical networks

Fault localization apparatus for optical line in wavelength...

Fault localization apparatus for optical line using...

Fault tolerant optical switch architecture

Fiber optic communication system with automatic line...

Fiber optic safety system for wind turbines

First and second derivative processing of wavelength...

Flexible open ring optical network and method

High loss loop back for long repeater span

Hybrid optical ring-mesh protection in a communication system

Identifying or locating waveguides