| 摘要 |
A scheme is described for remote control of the wavelength of a tunable transmitter in a smart small form-factor pluggable (SFP) transceiver, a smart SFP plus (SFP+) transceiver, a smart 10 gigabit small form-factor pluggable (XFP) transceiver, a smart duplex transceiver, a smart bidirectional (BiDi) transceiver, or a smart single wavelength single fiber (SWSF) BiDi-transceiver in a communication system using an operating system with Operation, Administration, and Maintenance (OAM) and Proprietary Protocol (PP) functions; an OAM, PP & Payload Processor; a transceiver; an optical spectrum analyzer; a bit error rate test (BERT); and an optical link in the field. |
| 主权项 |
1. A dense wavelength division multiplexing (DWDM) communication system comprising:
a smart small form-factor pluggable (SFP) transceiver located at a remote site, the smart SFP transceiver being configured to include a tunable transmitter and to support a loopback mode; an operating system configured to support Operation, Administration, and Maintenance (OAM) and Proprietary Protocol (PP) functions, communicatively coupled to an OAM, PP & Payload processor, and configured to remotely control a wavelength of a tunable transmitter of the smart SFP transceiver; a first transceiver coupled to the OAM, PP, and Payload processor, configured to exchange messages with the smart SFP transceiver over an optical link; a bit error rate test (BERT) unit communicatively coupled to the OAM, PP & Payload processor and configured to:
transmit a pseudo-random (PRN) bit stream to the smart SFP transceiver, while the smart SFP transceiver is operating in the loopback mode, andreceive the PRN bit stream back from the smart SFP transceiver for bit error rate (BER) measurement, wherein the smart SFP transceiver is configured to: receive a loopback configuration message over the optical link from the operating system to place the smart SFP transceiver in the loopback mode, receive the PRN bit stream over the optical link from the BERT unit and return the received PRN bit stream to the BERT unit during the loopback mode, receive a loopback disable message over the optical link from the operating system and configure the smart SFP transceiver to be out of the loopback mode; receive a first message over the optical link from the first transceiver the first message including a request to measure a parameter representing a transmission wavelength of the smart SFP transceiver, measure the parameter of the smart SFP transceiver and transmit a response message including the measured parameter over the optical link, the measured parameter comprising information on temperature of the tunable transmitter of the smart SFP transceiver, and after receiving a wavelength adjustment message from the first transceiver, adjust the wavelength of the tunable transmitter of the smart SFP transceiver in accordance with the wavelength adjustment message such that the adjusted wavelength of the tunable transmitter of the smart SFP transceiver does not overlap with a wavelength of the first transceiver coupled to the OAM, PP & Payload processor; wherein the first transceiver is configured to send the first message and the wavelength adjustment message to the smart transceiver until a predetermined BER is obtained. |
