Optical engines and optical cable assemblies having electrical signal conditioning

摘要

Optical engines and optical cable assemblies incorporating optical engines providing duty cycle correction on multiplexed low-speed signals are disclosed. In one embodiment, an optical engine includes a low-speed Tx line, a low-speed Rx line, an optical transceiver device, and a control circuit. A low-speed Tx signal is transmitted on the low-speed Tx line and a low-speed Rx signal is received on the low-speed Rx line. The optical transceiver device further includes a laser control pin operable to control a laser configured to provide light on an optical Tx lane, and an optical detect pin operable to provide an indication as to light detected at an optical Rx lane. A Tx signal conditioning circuit configured to condition the low-speed Tx signal is coupled to the laser control pin, and/or a Rx signal conditioning circuit configured to condition the low-speed Rx signal is coupled to the optical detect pin.

主权项

1. An optical engine comprising:
a low-speed Tx line; a low-speed Rx line, wherein a low-speed Tx signal is transmitted on the low-speed Tx line and a low-speed Rx signal is received on the low-speed Rx line; an optical transceiver device comprising:
an optical Tx lane and an optical Rx lane, wherein the optical transceiver device is configured to convert a high-speed electrical Tx signal into a high-speed Tx optical signal provided on the optical Tx lane, and convert a high-speed Rx optical signal received on the optical Rx lane into a high-speed electrical Rx signal, wherein the low-speed Tx signal and the low-speed Rx signal have a data rate that is lower than a data rate of the high-speed electrical Tx signal and a data rate of the high-speed electrical Rx signal;a laser control pin operable to control a laser configured to provide light on the optical Tx lane; andan optical detect pin operable to provide an indication as to light detected at the optical Rx lane; a control circuit configured to:
selectively route the low-speed Tx signal at the low-speed Tx line to the optical transceiver device in real time such that the optical transceiver device converts the low-speed Tx signal to a low-speed optical Tx signal at the optical Tx lane; and/orselectively route the low-speed Rx signal on the optical detect pin to the low-speed Rx line in real time; and a Tx signal conditioning circuit coupled to the laser control pin and/or a Rx signal conditioning circuit coupled to the optical detect pin, wherein:
the Tx signal conditioning circuit is configured to condition the low-speed Tx signal prior to the optical transceiver device; andthe Rx signal conditioning circuit is configured to condition the low-speed Rx signal received from the optical transceiver device.