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Highly accurate fiber transfer delay measurement with large dynamic range
Optics Express
|February 3, 2016
Summary
A new method accurately measures fiber transfer delay by converting time-domain measurements to frequency-domain signals. This technique achieves sub-picosecond resolution for precise fiber optic communication analysis.
Area of Science:
- Optical Engineering
- Telecommunications
- Metrology
Background:
- Accurate measurement of fiber transfer delay is crucial for high-performance optical communication systems.
- Existing methods may suffer from limitations in resolution, accuracy, or dynamic range.
Purpose of the Study:
- To demonstrate a novel and efficient method for fiber transfer delay measurement.
- To achieve high resolution and accuracy over a large dynamic range without dead zones.
Main Methods:
- Converted time-domain fiber transfer delay measurement to frequency measurement of a modulation signal in the frequency domain.
- Employed a coarse and straightforward ambiguity resolving process.
Main Results:
- Achieved sub-picosecond resolution.
- Demonstrated an accuracy of 1 picosecond.
- Obtained a large dynamic range of up to 50 km.
- Ensured no measurement dead zone.
Conclusions:
- The proposed method offers a significant advancement in fiber transfer delay measurement.
- This technique enables precise characterization of optical fiber links.
- The high accuracy and large dynamic range are suitable for demanding telecommunication applications.
