This demonstration employed a ring network topology with three nodes. Two DVD streams originated from [PC1]. One stream was transmitted to [PC2] via GbE and the other was sent to [PC3].

The Optical Media Manager converted the Ethernet frames into 40Gbps optical packets and generated optical labels from their destination addresses.

Operating at a high rate of speed, the Optical Packet Switch read the optical label of the received optical packet, dropped the packet if it was heading to the switch's own node, or let it pass through if was intended for another node.

The Optical Media Manager receiving the optical packets recovered the data with an asynchronous burst mode CDR, reassembled the Ethernet frames, and transmitted them to [PC2] (or [PC3]).

To be more precise, the basic technologies that were developed are as follows:

• Multi-channel and multi-junction optical switch to improve the extinction ratio
• Optical buffer memory consisting of an optical switch device and an optical fiber delay to perform collision management
• Burst mode clock and data recovery (CDR) to enable recovery of clock and data with asynchronous burst mode
• Very fast and highly functional label recognition circuit with optical serial-parallel conversion, high-speed photodiodes, and high speed logic circuit

We totally optimized the device design, then implemented and evaluated it to make the system work.