Rissons, Angélique and Ly, Khadijetou and Mollier, Jean-Claude and Pez, Mathias and Gambardella, Eddie Bidirectional link mock-up for avionics applications. (2008) In: Avionics, Fiber-Optics and Photonics Technology Conference 2008, 30 Sept - 02 Oct 2008, San diego, United States .
|(Document in English) |
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Copper-based networks have been extensively employed on aircraft to ensure the avionics data-communications. Since the Airbus A380 development, Avionic Data Communication Network (ADCN) has been implemented to ensure transmissions between avionic equipment. This system is based on the Avionic Full Duplex Ethernet (AFDX), and transfers data at rates up to 100 Mb/s. The need of faster communications systems, up to 1Gb/s, has led to great interest in fiber optic based networks. Beyond higher data rates capabilities, the fiber optics have additional benefits, compared to electrical cables, in terms of weight saving and electromagnetic interference immunity which is strongly needed at gigahertz bandwidths. Multimode fibers (MMF) are becoming increasingly attractive for short-haul (<300m) high-speed interconnections. Besides, Vertical Cavity Surface Emitting Lasers (VCSELs) present interesting performances in comparison to edge-emitting lasers, cost effective and are widely chosen in this type of applications. We aim at achieving an entirely optical fiber Gigabit Ethernet (GbE) link based on 850nm VCSELs to interconnect avionic equipments. To meet IEEE 802.3 standards  and ADCN requirements , the fiber optic link must be full-duplex, bi-directional, on a single wavelength, and on the same fiber on up to 100m-distance. We have used, at each side of the link, a transceiver module developed for harsh environment applications. Also, there are multiple connections due to production breaks. These connections give birth to return loss (RL) and consequently crosstalk. One might pay attention to the impact of the RL on the link. We present the characterization of a mock-up and the comparison of experimental results with the GbE requirements.
|Item Type:||Conference or Workshop Item (Paper)|
|Additional Information:||This paper appears in: Avionics, Fiber-Optics and Photonics Technology Conference, 2008 IEEE Publication Date: Sept. 30 2008-Oct. 2 2008 ISBN: 978-1-4244-1919-7|
|Audience (conference):||International conference proceedings|
|Institution:||Université de Toulouse > Institut Supérieur de l'Aéronautique et de l'Espace - ISAE|
Other partners > Airbus (FRANCE)
Other partners > D-Lightsys (FRANCE)
|Deposited By:||Angelique Rissons|
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