Clock-distribution with instantaneous synchronization for 160 Gbit/s optical time-domain multiplexed systems packet transmission

Area of Science:

• Optical communications
• High-speed data transmission
• Synchronization techniques

Background:

• Ultra-high-speed optical time-domain multiplexed (OTDM) systems require precise clock synchronization.
• Existing methods face challenges with fast locking/unlocking and clock stability in bursty traffic.

Purpose of the Study:

• To introduce a novel clock-distribution method for OTDM systems.
• To achieve instantaneous synchronization and stable clocking for high-speed data packets.

Main Methods:

• Development of a new clock-distribution technique.
• Integration into an OTDM system for time demultiplexing.
• Testing error-free operation over standard single-mode fiber.

Main Results:

• Demonstrated instantaneous synchronization and fast locking/unlocking.
• Achieved a highly stable bursty clock.
• Enabled error-free 160 to 10 Gbit/s time demultiplexing.
• Observed a low power penalty of 1.5 dB after 51 km fiber transmission.

Conclusions:

• The novel clock-distribution method is effective for ultra-high-speed OTDM systems.
• The technique supports error-free operation and robust clocking in demanding network conditions.