Passive optical repeater bypass for optical fiber systems
Passive optical ring network
Passive optical telecommunication system
Passive optical telecommunication system for narrow band and bro
Passive photonic loop architecture employing wavelength multiple
Passive scan angle doubling optical system
Passive tap network
Path integrity proving in optical communications systems
Path to provide OTDR measurements of an optical transmission sys
Pay-channel transmission system for CATV
PCM signal coding
PDS structured optical subscriber system
Peak-hold circuit and an infrared communication device...
Penta assembly skew compensator
Performance monitoring and fault location for optical equipment,
Performance monitoring and fault location in optical transmissio
Permanent magnetic means for positioning a rotatable element to
Personal storage device for application and data transfer
Phase lock loop circuit using optical correlation detection
Phase lock loop circuit using optical correlation detection