Methods and apparatus for monitoring and controlling the performance of optical communication systems

摘要

In some embodiments, an apparatus includes an optical detector that can sample asynchronously an optical signal from an optical component that can be either an optical transmitter or an optical receiver. In such embodiments, the apparatus also includes a processor operatively coupled to the optical detector, where the processor can calculate a metric value of the optical signal without an extinction ratio of the optical signal being measured. The metric value is proportional to the extinction ratio of the optical signal. In such embodiments, the processor can define an error signal based on the metric value of the optical signal and the processor can send the error signal to the optical transmitter such that the optical transmitter modifies an output optical signal.

主权项

1. An apparatus, comprising:
an optical detector configured to sample asynchronously an optical signal from an optical component; and a processor operatively coupled to the optical detector, the processor configured to calculate a metric value of the optical signal without an extinction ratio of the optical signal being measured, the metric value being proportional to the extinction ratio of the optical signal, the processor configured to calculate a calibration value based on the optical signal such that the calibration value is calculated by the processor when: (1) a bit rate of the optical signal is greater than an analog bandwidth of the optical detector and (2) a sampling frequency of the optical signal is not less than the analog bandwidth of the optical detector, the processor configured to define an error signal based on the calibration value and the metric value of the optical signal, the processor configured to send the error signal to an optical transmitter such that the optical transmitter modifies an output optical signal.