Method and system for transmitter optimization of an optical PAM serdes based on receiver feedback

摘要

The present invention is directed to data communication system and methods. More specifically, various embodiments of the present invention provide a communication interface that is configured to transfer data at high bandwidth using PAM format(s) over optical communication networks. A feedback mechanism is provided for adjusting the transmission power levels. There are other embodiments as well.

主权项

1. A network interface device comprising:
a first optical communication interface configured to receive an optical signal transmission transmitted over an optical communication link, the optical signal transmission being characterized by a signal level and a noise level, the optical signal transmission being received from a transmitter device; a photodiode configured to convert the optical signal transmission to an electrical signal transmission; a TIA configured to amplify the electrical signal transmission; a processor configured to calculate a set of threshold levels based on at least the signal level and the noise level, the processor being configured to generate a set of power transmission levels for the transmitter device, the power transmission levels being based on at least one of the threshold levels, the power transmission levels being non-equispaced; an encoder for encoding the power transmission levels; a second optical communication interface for sending the encoded power transmission levels to the transmitter device.