17961004. Signal Detection Method and Optical Time-Domain Reflectometer simplified abstract (HUAWEI TECHNOLOGIES CO., LTD.)
Signal Detection Method and Optical Time-Domain Reflectometer
Organization Name
Inventor(s)
Signal Detection Method and Optical Time-Domain Reflectometer - A simplified explanation of the abstract
This abstract first appeared for US patent application 17961004 titled 'Signal Detection Method and Optical Time-Domain Reflectometer
Simplified Explanation
The abstract describes an optical time-domain reflectometer (OTDR) that uses a laser emitting apparatus to output an optical signal. A signal modulation apparatus generates a pulse signal based on the optical signal and sends it through an optical fiber. The receiver of the OTDR receives a scattered signal from the fiber, and the laser emitting apparatus outputs a second optical signal with a different frequency to be used as a local oscillator signal for coherent detection in the receiver.
- The OTDR uses a laser emitting apparatus to output an optical signal.
- A signal modulation apparatus generates a pulse signal based on the optical signal.
- The pulse signal is sent through an optical fiber.
- The receiver of the OTDR receives a scattered signal from the fiber.
- The laser emitting apparatus outputs a second optical signal with a different frequency.
- The second optical signal is used as a local oscillator signal for coherent detection in the receiver.
Potential Applications
- Fiber optic network testing and troubleshooting
- Optical fiber characterization and analysis
- Optical fiber fault detection and localization
Problems Solved
- Accurate measurement and analysis of optical fiber characteristics
- Efficient detection and localization of faults in optical fiber networks
Benefits
- Improved accuracy and reliability in fiber optic network testing
- Faster and more efficient troubleshooting of optical fiber networks
- Enhanced performance in optical fiber fault detection and localization
Original Abstract Submitted
An optical time-domain reflectometer (OTDR), where a laser emitting apparatus of the OTDR outputs a first optical signal in a first time period. A signal modulation apparatus of the OTDR generates a pulse signal based on the first optical signal, and outputs the pulse signal to an optical fiber in a second time period, where the first time period includes the second time period. A receiver of the OTDR receives a scattered signal from the optical fiber, where a frequency of the scattered signal is the same as a frequency of the first optical signal. Then, the laser emitting apparatus outputs a second optical signal in a third time period, where a frequency of the second optical signal is different from the frequency of the first optical signal. The second optical signal is used as a local oscillator signal to implement coherent detection in the receiver.
