Claims
- 1. A system for simultaneously transmitting payload data and an optical media monitoring signal through an optical media comprising:
a first input configured to receive payload data; a signal generator configured to generate an optical media monitoring signal; an extinction ratio controller configured to receive extinction ratio data and the optical media monitoring signal to generate an extinction ratio control signal; an optical driver configured to receive the extinction ratio control signal and the payload data and generate a driver signal, wherein the driver signal represents the payload data and the optical media monitoring signal; and an optical signal generator configured to transform the driver signal into an optical signal.
- 2. The method of claim 1, wherein the extinction ratio data controls at least one aspect of the driver signal.
- 3. The method of claim 1, wherein the optical media monitoring signal comprises an m-sequence.
- 4. The method of claim 1, wherein the payload data comprises network traffic.
- 5. A system for processing a reflected composite optical signal, generated by transmission of a composite signal to monitor during data transmission for line anomalies, wherein the composite signal comprises payload data and a sequence signal, the system comprising:
an optical detector configured to convert a reflected composite optical signal to a reflected composite electrical signal; a first amplifier configured to amplify the reflected composite electrical signal; a filter configured to separate a reflected sequence signal from the composite electrical signal; a processor configured to:
correlate the reflected sequence signal with the sequence signal; identify a point of correlation and a time of receipt of the portion of the reflection sequence signal that generates the point of correlation relative to the transmission of the composite signal; and calculate a location of a line anomaly based on the time of receipt and a rate of propagation of the composite signal.
- 6. The method of claim 5, wherein the filter consists of a device selected from the group consisting of a high pass filter, a low pass filter, a de-multiplexer, and a demodulator.
- 7. The system of claim 5, wherein the system is located at one or more nodes within one or more networks.
- 8. The system of claim 5, further comprising a receiver configured to:
receive the composite signal; separate the payload data from the sequence signal; provide the payload data to a network interface.
- 9. A method of real time monitoring for line anomalies in an optical media during data transmission over the optical media comprising:
transmitting a composite signal over the optical media, wherein the composite signal comprises a sequence signal combined with a payload data signal; monitoring for a reflected composite signal, the reflected composite signal generated by the composite signal encountering a line anomaly as the composite signal progresses through the optical media; receiving a reflected composite signal; processing the reflected composite signal to isolate a reflected sequence signal of the reflected composite signal; processing the reflected sequence signal to determine if the optical media possesses a line anomaly.
- 10. The method of monitoring of claim 9, further comprising processing the reflected sequence signal to determine the location of line anomaly.
- 11. The method of monitoring of claim 9, wherein the processing the reflected composite signal comprises any of the actions selected from the group consisting of filtering, de-modulation, and de-multiplexing to isolate the reflected sequence signal.
- 12. The method of monitoring of claim 9, wherein processing the reflected sequence signal to determine if the optical media possesses a line anomaly comprises correlating the reflected sequence signal with the sequence signal.
- 13. The method of monitoring of claim 9, further comprising simultaneously receiving the composite signal at a receiver and processing the composite signal to isolate the payload data.
- 14. A method of identifying one or more line anomalies in an optical media during data transmission over the optical media comprising:
transmitting at a first location a composite signal over the optical media, the composite signal comprising a sequence signal combined with an data signal; receiving the composite signal at a second location; extracting a received sequence signal from the received composite signal; processing the received sequence signal to obtain a correlated signal; comparing the correlated signal to a baseline signal; responsive to the comparing, generating a output indicative of the existence of a line anomaly.
- 15. The method of claim 14, wherein the sequence signal comprises a m-sequence.
- 16. The method of claim 14, wherein processing comprises correlating the received sequence signal with the sequence signal as transmitted to generated a correlated signal.
- 17. The method of claim 14, wherein the baseline signal represents a baseline signal generated when the optical media is known to be absent of line anomalies.
- 18. The method of claim 14, composite signal comprises a combined signal representing a sequence signal and a data signal.
- 19. A method for combining payload data with a sequence signal for channel monitoring during transmission of the payload data over the channel, the method comprising:
receiving payload data; receiving a sequence signal; generating a composite signal representing the payload data and the sequence signal; transmitting the composite signal through a first end of the channel; receiving the composite signal at a distal end of the channel; monitoring for a reflected composite signal at the first end of the channel, the reflected composite signal generated by the composite signal encountering a line anomaly as it progresses from the first end to the distal end; generating a line anomaly alert responsive to the monitoring if a reflected composite signal is detected.
- 20. The method of claim 19, further comprising processing the reflected composite signal to isolate a reflected sequence signal;
correlating the reflected sequence signal with the sequence signal to obtain a correlated signal; analyzing a point of correlation in the correlated signal and a time of transmission to determine a location of the line anomaly.
- 21. The method of claim 19,wherein generating a composite signal comprises biased amplitude modulating or frequency division multiplexing the payload data and the sequence signal.
- 22. The method of claim 19, further comprising processing the composite signal received at the distal end to detect line anomalies in the channel.
- 23. The method of claim 19, further comprising dispatching repair personal to the line anomaly in response to the generating a line anomaly alert.
- 24. The method of claim 19, wherein generating a composite signal comprises adding the sequence signal to the payload signal.
- 25. The method of claim 19, wherein the receiving a sequence signal comprises generating a sequence signal.
- 26. The method of claim 19, wherein the method of combining payload data with a sequence signal for channel monitoring occurs periodically during payload data transmission.
Parent Case Info
[0001] This application is a continuation-in-part of application Ser. No. 10/095,825, entitled OPTICAL TIME DOMAIN REFLECTOMETRY filed Mar. 11, 2002 which is a continuation-in-part of application Ser. No. 09/810,932, entitled METHOD AND APPARATUS FOR TRANSMISSION LINE ANALYSIS filed Mar. 16, 2001.
Continuation in Parts (2)
|
Number |
Date |
Country |
Parent |
10095825 |
Mar 2002 |
US |
Child |
10464962 |
Jun 2003 |
US |
Parent |
09810932 |
Mar 2001 |
US |
Child |
10095825 |
Mar 2002 |
US |