Redundancy and interoperability in multi-channel optoelectronic devices

摘要

A multi-channel optoelectronic device is configured to establish a redundant status link with a remote device. The optoelectronic device can transmit N transmit optical signals to the remote device over a plurality of transmit channels and receive N receive optical signals from the remote device over a plurality of receive channels. The optoelectronic device includes one or more spare transmit and receive channels. When used with a remote device having spare transmit and receive channels, each device can establish a status link with the other and use the status link to switch out transmit and/or receive channels to identify and permanently switch out the worst transmit and/or receive channels. Alternately, the device can interoperate with a non-status-link enabled remote device by determining that the remote device is not status-link enabled, transitioning to a low transmit power mode, and transmitting and receiving over a plurality of default transmit and receive channels.

主权项

1. An optoelectronic device comprising:
a plurality of optical transmitters configured to emit a plurality of transmit optical signals representative of a plurality of transmit electrical signals, each of the plurality of transmit optical signals including primary data, and the plurality of optical transmitters including a plurality of default optical transmitters; a plurality of optical receivers configured to receive a plurality of receive optical signals and generate a plurality of receive electrical signals, each of the plurality of receive optical signals including primary data; and a controller configured to determine whether a remote device to which the optoelectronic device is communicatively coupled is status-link enabled, and:
when the remote device is status-link enabled:
effectively modulate transmitter bias currents for at least two of the optical transmitters with a low frequency status link signal such that first status data is simultaneously conveyed with primary data on at least two of the plurality of transmit optical signals; anddetect second status data simultaneously received with primary data on at least two of the plurality of receive optical signals; or when the remote device is not status-link enabled:transition the optoelectronic device to or maintain operation in a low transmit power mode; andtransmit the plurality of transmit optical signals including primary data to the remote device using the plurality of default optical transmitters.