A Hybrid Optical Fiber and FSO System for Bidirectional Communications Used in Bridges

Yu, Yi-Lin, Liaw, Shien-Kuei, Chou, Hsi-Hsir, Le Minh, Hoa and Ghassemlooy, Zabih (2015) A Hybrid Optical Fiber and FSO System for Bidirectional Communications Used in Bridges. IEEE Photonics Journal, 7 (6). pp. 1-9. ISSN 1943-0655

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Official URL: http://dx.doi.org/10.1109/JPHOT.2015.2488286

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.

Item Type: Article
Uncontrolled Keywords: Erbium doped fiber amplifer, Fiber sensor, Free space optics, Long-haul transmission system
Subjects: H600 Electronic and Electrical Engineering
Department: Faculties > Engineering and Environment > Mathematics, Physics and Electrical Engineering
Depositing User: Becky Skoyles
Date Deposited: 15 Jan 2016 09:55
Last Modified: 28 Oct 2017 16:15
URI: http://nrl.northumbria.ac.uk/id/eprint/25456

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