Method and apparatus for distortion correction in optical communication links

摘要

In some embodiments, an apparatus includes an optical transmitter module that can be electrically coupled to an electrical serializer/deserializer and a controller. The optical transmitter module can include an electrical detector that can receive an in-band signal. The electrical detector can send to the controller a first power error signal and a second power error signal based on the in-band signal. The controller can send a correction control signal to the electrical serializer/deserializer based on the first power error signal and the second power error signal such that the electrical serializer/deserializer sends a pre-emphasized signal to the optical transmitter module based on the correction control signal. In such embodiments, the first power error signal, the second power signal and the correction control signal are out-of-band signals.

主权项

1. An apparatus, comprising:
an optical transmitter module configured to be electrically coupled to an electrical serializer/deserializer and a controller, the optical transmitter module including an electrical detector configured to receive an in-band signal, the electrical detector configured to send to a controller a first power error signal based on the in-band signal such that the controller sends a correction control signal to the electrical serializer/deserializer based on the first power error signal and a second power error signal and such that the electrical serializer/deserializer modifies a pre-emphasized signal to the optical transmitter module based on the correction control signal, the first power error signal, the second power error signal and the correction control signal being out-of-band.