A burst-mode packet receiver with bit-rate-discriminating circuit for multi-bit-rate transmission system

For multi-media communications, high capacity and flexible data transmission systems, such as the Passive Optical Network (PON), are in strong demand. In such point-multipoint communication systems, however, it is necessary to handle data packets at the same bit-rate. This precondition makes the PON system inflexible. If the PON system could handle multi-bit-rate packets, the user could choose the type of Optical Network Unit (ONU) needed making it easy to accommodate multiple users. Accordingly, we developed a 3R regeneration circuit for multi-bit-rate packets for use at the Optical Line Termination (OLT) point. It will greatly improve the flexibility of the PON system. We intend to extend the circuit to handle wider ranges of bit rates