publication . Article . 2015

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; Ghassemlooy, Zabih;
Open Access
  • Published: 01 Dec 2015 Journal: IEEE Photonics Journal, volume 7, pages 1-9 (eissn: 1943-0655, Copyright policy)
  • Publisher: Institute of Electrical and Electronics Engineers (IEEE)
  • Country: United Kingdom
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 fo...
free text keywords: Plastic optical fiber, Fiber optic splitter, Fiber-optic communication, Physics, Multi-mode optical fiber, Graded-index fiber, Dispersion-shifted fiber, Wavelength-division multiplexing, Optics, business.industry, business, Optical fiber cable, law.invention, law, H600
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