Abstract
In this paper, a 10-Gb/s hybrid optical fiber (OF) and free-space optics (FSO) link as part of a bidirectional long-haul OF transmission for application in outdoor environments such as bridges is proposed. A fiber-Bragg-grating (FBG) sensor head is used for monitoring the condition of a bridge, and in the case of the bridge being damaged, the transmission path is changed over from OF to the FSO link to ensure link connectivity. An Erbium-doped fiber amplifier is used to compensate for losses due to the fiber cable and the free-space channel. At a bit error rate (BER) of 10e-9, the power penalty between the OF and FSO paths is <; 1 dB, and the power variations for both paths are ±0.07 and ±0.12 dB, respectively.
Original language | English |
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Article number | 7905509 |
Pages (from-to) | 1-9 |
Number of pages | 9 |
Journal | IEEE Photonics Journal |
Volume | 7 |
Issue number | 6 |
Early online date | 7 Oct 2015 |
DOIs | |
Publication status | Published - 7 Dec 2015 |
Keywords
- Erbium doped fiber amplifer
- Fiber sensor
- Free space optics
- Long-haul transmission system