Alarm surveillance for cascaded optical access
Arrangement for characterizing and reducing multi-path...
Automatic optical power management in optical communications...
Automatic protection system for an optical transmission system
Bit error rate based system and method for optimizing...
Bit error rate based system and method for optimizing...
Built in self test method and circuit for parallel optical...
Cancellation of optical signal reflections in bi-directional...
Communication link with non-intrusive expansion capability
Communication path impairment detection for duplex optic...
Communications test receiver
Connection verification for all-optical cross-connects by...
COTDR arrangement with swept frequency pulse generator for...
Detection of disconnection in an optical transmission line
Determination and adjustment of laser modulation current in...
Distributed processor modules and persistent storage in an...
Electrically looped back, fault emulating transceiver module
Fast testing system for optical transceiver and testing...
Fault detection and isolation in an optical network
Fault tolerant optical switch architecture