US Patent No. 9,438,350

METHOD AND APPARATUS FOR DISTORTION CORRECTION IN OPTICAL COMMUNICATION LINKS


Patent No. 9,438,350
Issue Date September 06, 2016
Title Method And Apparatus For Distortion Correction In Optical Communication Links
Inventorship Theodore J. Schmidt, Gilroy, CA (US)
Bo Zhang, San Jose, CA (US)
Murat Arabaci, Santa Clara, CA (US)
Roberto Marcoccia, San Jose, CA (US)
Christian Malouin, San Jose, CA (US)
Steven William Keck, Mountain View, CA (US)
Assignee Juniper Networks, Inc., Sunnyvale, CA (US)

Claim of US Patent No. 9,438,350

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.