METHOD AND SYSTEM FOR AN OPTOELECTRONIC BUILT-IN SELF-TEST SYSTEM FOR SILICON PHOTONICS OPTICAL TRANSCEIVERS

摘要

Methods and systems for an optoelectronic built-in self-test (BIST) system for silicon photonics optical transceivers are disclosed and may include, in an optoelectronic transceiver having a transmit (Tx) path and a receive (Rx) path, where the Rx path includes a main Rx path and a BIST loopback path: generating a pseudo-random bit sequence (PRBS) signal, generating an optical signal in the Tx path by applying the PRBS signal to a modulator, communicating the optical signal to the BIST loopback path and converting to an electrical signal utilizing a photodetector, the photodetector being a replica of a photodetector in the main Rx path, and assessing the performance of the Tx and Rx paths by extracting a PRBS signal from the electrical signal. The transceiver may be a single complementary-metal oxide semiconductor (CMOS) die or in two CMOS die, where a first comprises electronic devices and a second comprises optical devices.

主权项

1. A method for optical communication, the method comprising:
in an optoelectronic transceiver having a transmit (Tx) path and a receive (Rx) path, the Rx path comprising a main Rx path and a built-in self-test loopback path:
generating a pseudo-random bit sequence (PRBS) signal;generating an optical signal in the Tx path by applying the PRBS signal to an optical modulator;communicating the optical signal to the built-in self-test loopback path;converting the optical signal to an electrical signal in the Rx path utilizing a photodetector in the built-in self-test loopback path, the loopback photodetector being a replica of a photodetector in the main Rx path; andassessing the performance of the Tx and Rx paths by extracting a PRBS signal from the electrical signal.