This content is not included in your SAE MOBILUS subscription, or you are not logged in.
Built-In Test in Fiber Optic Links - Enabling Technology for a Network-Centric Future
ISSN: 0148-7191, e-ISSN: 2688-3627
Published November 02, 2004 by SAE International in United States
Annotation ability available
Modern aerospace avionics systems demand both an increased use of networks and an increase in the capacity of such networks. It is quite common today to find links of 1 gigabit-per-second (Gbps) or higher being designed into aircraft. At these rates, the transmission medium of choice is generally fiber optics since copper media at such rates generally perform poorly at lengths of more than a few tens of feet.
While fiber optics use proliferates and improves in a number of important ways, in one respect important to the aerospace industry, it remains stuck in the 70's. That aspect has to do with the way a link is diagnosed when it has problems. Troubleshooting a fiber optic link generally requires the intervention of a skilled technician, sometimes requiring the use of sophisticated diagnostic equipment.
This paper describes the features needed to provide self-diagnosis capability to fiber optics transceivers. Such transceivers would be capable of determining which component within a fiber optic link was bad and, in the case of a broken fiber, would be able to locate the fault to within inches. All such features are thought to be within the capability of current, low-cost technology and are being developed at this time.
CitationHarres, D., "Built-In Test in Fiber Optic Links - Enabling Technology for a Network-Centric Future," SAE Technical Paper 2004-01-3126, 2004, https://doi.org/10.4271/2004-01-3126.
- Harres, D. “Current State and Future Direction for Military Aircraft Fiber Optics Networks” 2003 IEEE Digital Avionics Systems Conference Indianapolis, IN 15 October 2003
- Harres, D. “An Aerospace Transceiver for Future High-Speed Fiber Networks” IEEE LEOS Avionics, Fiber Optics and Photonics Workshop St. Louis, MO 21 April 2004
- “Diagnostic Monitoring Interface for Optical Xcvrs” 1 August 2002