دورية أكاديمية
Dynamic Range Enhanced Optical Frequency Domain Reflectometry Using Dual-Loop Composite Optical Phase-Locking
| العنوان: | Dynamic Range Enhanced Optical Frequency Domain Reflectometry Using Dual-Loop Composite Optical Phase-Locking |
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| المؤلفون: | Yinxia Meng, Weilin Xie, Yuxiang Feng, Jiang Yang, Ling Zhang, Yuanshuo Bai, Wei Wei, Yi Dong |
| المصدر: | IEEE Photonics Journal, Vol 13, Iss 4, Pp 1-7 (2021) |
| بيانات النشر: | IEEE, 2021. |
| سنة النشر: | 2021 |
| المجموعة: | LCC:Applied optics. Photonics LCC:Optics. Light |
| مصطلحات موضوعية: | Fiber laser, optical phase-locked loop, optical frequency domain reflectometry, Rayleigh backscattering, Applied optics. Photonics, TA1501-1820, Optics. Light, QC350-467 |
| الوصف: | We report on a dynamic range enhanced optical frequency domain reflectometry distributed backscattering interrogator based on dual-loop composite optical phase-locked loop (OPLL). Exploiting simultaneously an acousto-optic frequency shifter based an external modulation loop and a piezo based direct modulation loop, the proposed composite OPLL allows offering a larger loop bandwidth and gain, permitting a more efficient coherence enhancement as well as sweep linearization. A high fidelity frequency sweep of ${\rm{\sim}} \text{8.2 GHz}$ at ${\text{164 GHz/s}}$ sweep rate is generated with a peak-to-peak frequency error as low as ${\rm{\sim}} \text{120 kHz}$. It leads to a dynamic range enhancement of more than ${\text{3 dB}}$ for the measured power loss compared to the case when only piezo loop is applied. This corresponds to ${\rm{\sim}} \text{15 km}$ extension for the measurement range of Rayleigh backscattering without any spatial resolution penalties. Fourier transform-limited spatial resolution has been demonstrated at a range window more than about $\text{28}$ times of the intrinsic coherence length of the adopted fiber laser. The proposed method provides a straightforward optimization of the real-time sweep control and is expected to be a useful tool in industrial and commercial applications. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 1943-0655 |
| Relation: | https://ieeexplore.ieee.org/document/9472954/; https://doaj.org/toc/1943-0655 |
| DOI: | 10.1109/JPHOT.2021.3094330 |
| URL الوصول: | https://doaj.org/article/bf2adb3a5fed482f84664f9ff3e5b2e1 |
| رقم الأكسشن: | edsdoj.bf2adb3a5fed482f84664f9ff3e5b2e1 |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 19430655 |
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| DOI: | 10.1109/JPHOT.2021.3094330 |