Data transmission rate arbitration method and optical...

Data transmission unit for high bit-rate signals, especially...

DCC loop plug

DCC loop plug

Detection of data transmission rates using passing...

Detection of disconnection in an optical transmission line

Determination and adjustment of laser modulation current in...

Device and method for optical supervisory channel framing in...

Device for integrating demultiplexing and optical channel...

Device for monitoring the quality of an optical signal by...

Digital performance monitoring for an optical communications...

Digital-signal quality monitoring method and communications...

Dispersion monitoring method and apparatus and dispersion...

Distortion measurement in optical communication systems

Distributed fiber sensor with detection and signal...

Distributed processor modules and persistent storage in an...

DWDM system with IP telephony provisioning at remote locations

Dynamic measurement of and compensation for impairments to...

Dynamically reconfigurable optical smart node