Pham, Toan Thang and Bach, Gia-Duong and Vu, Van Yem and Ledoux-Rak, I and Journet, Bernard (2014) Monitoring the Oscillation Frequency Drift of an Optoelectronic Oscillator with a Vector Network Analyzer. In: 2014: The 7th International Conference on Advanced Technologies for Communications (ATC 2014), 15-17 October 2014, Hanoi, Vietnam.
Full text not available from this repository.Abstract
The classical structure of an optoelectronic oscillator (OEO) is based on a long optical fiber loop creating a delay line with very low insertion loss. The oscillation frequency is proportional to the reciprocal of the propagation delay which depends on temperature by the way of the effective refractive index of the fiber. In case of a long fiber loop, even a small change of the temperature can induce an oscillation frequency drift. In this paper, a system based on a vector network analyzer (VNA) is proposed to monitor the oscillation frequency drift with a minimum of extra optical components. There is a good correlation between the phase evolution determined by the VNA and the OEO frequency drift. Knowing the drift it is possible to correct results obtained from the OEO used as an optical path measurement tool for either distance or refractive index variation detection.
| Item Type: | Conference or Workshop Item (Paper) |
|---|---|
| Subjects: | Electronics and Communications Electronics and Communications > Electronics and Computer Engineering |
| Divisions: | Faculty of Electronics and Telecommunications (FET) |
| Depositing User: | Ms. Cam Le Tran Thi |
| Date Deposited: | 28 Aug 2015 09:51 |
| Last Modified: | 31 Aug 2015 08:03 |
| URI: | http://eprints.uet.vnu.edu.vn/eprints/id/eprint/1379 |
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