Ultrahigh Resolution Optical Reflectometry Based on Linear Optical Sampling Technique With Digital Dispersion Compensation
| Autor: | Zuyuan He, Xinyu Fan, Shuai Wang |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Physics
lcsh:Applied optics. Photonics business.industry Physics::Optics lcsh:TA1501-1820 02 engineering and technology Optical performance monitoring Optical modulation amplitude Optical time-domain reflectometer Atomic and Molecular Physics and Optics 020210 optoelectronics & photonics Optics Dispersion (optics) 0202 electrical engineering electronic engineering information engineering chromatic dispersion compensation lcsh:QC350-467 Electrical and Electronic Engineering Reflectometry business Optical reflectometry Ultrashort pulse Image resolution Bandwidth-limited pulse linear optical sampling lcsh:Optics. Light |
| Zdroj: | IEEE Photonics Journal, Vol 9, Iss 6, Pp 1-10 (2017) |
| ISSN: | 1943-0655 |
| Popis: | We demonstrate an ultrahigh-resolution optical time domain reflectometry (OTDR) system by using a mode-locked laser as the pulse source and a linear optical sampling technique to detect the reflected signals. Taking advantage of the ultrashort input pulse, the large detection-bandwidth, as well as the low timing jitter of linear optical sampling system, a sub-mm spatial resolution is achieved. As the pulse-width is broadened with the increase of distance due to chromatic dispersion and large bandwidth of the ultrashort pulse, by adopting digital chromatic dispersion compensation, we achieved a spatial resolution of $340\,\mu {\text{m}}$ when measuring the reflector at 10 km. This technique helps OTDR find new foreground in long-range and ultrahigh-resolution distributed applications such as remote optical identification device detection for diagnosing passive optical network links, or precisely detecting fault positions in aircrafts. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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