METHODS FOR REDUCING OPTICAL BEAT INTERFERENCE BY CONTINUOUSLY VARYING LASER TEMPERATURES AND RELATED OPTICAL NETWORK UNITS

摘要

Methods of reducing optical beat interference are disclosed in which an output of a first temperature control system that establishes an operating temperature of a first laser that is included in a first optical network unit is controlled so that the operating temperature of the first laser varies according to a first continuous function that has a first amplitude and a first frequency and an output of a second temperature control system that establishes an operating temperature of a second laser that is included in a second optical network unit is controlled so that the operating temperature of the second laser varies according to a second continuous function that has a second amplitude and a second frequency, where the first continuous function is different than the second continuous function, the first amplitude is different than the second amplitude, and/or the first frequency is different than the second frequency.

主权项

1. A method of reducing optical beat interference at a receiver in a fiber optic network that has a plurality of optical network units communicating with the receiver over a common optical transmission path, the method comprising:
controlling an output of a first temperature control system that establishes an operating temperature of a first laser that is included in a first of the optical network units so that the operating temperature of the first laser varies according to a first continuous function that has a first amplitude and a first frequency; and controlling an output of a second temperature control system that establishes an operating temperature of a second laser that is included in a second of the optical network units so that the operating temperature of the second laser varies according to a second continuous function that has a second amplitude and a second frequency, wherein the first continuous function is different than the second continuous function, the first amplitude is different than the second amplitude, and/or the first frequency is different than the second frequency.