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21 September 1994 Redundant multiplexing topologies of Fabry-Perot sensors for shipboard applications
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Abstract
The U.S. Navy is presently developing fiber optic sensor technology for machinery monitoring and control and damage control systems. We have developed a redundant, reflective star network of four fiber optic sensors (temperature, pressure, liquid level, and smoke) which can be monitored using either Time Division Multiplexing or Frequency Modulated Continuous Wave techniques. The sensors used are short cavity, low finesse Fabry- Perot sensors; processing utilizes the varying power reflectances from the sensors and is done in a desk top computer. The networks allow for the passive, remote monitoring of an area or of a machine using a single fiber and opto-electronics package. The paper presents the philosophies of the two designs and the results of network testing. Projections are made concerning the maximum number of sensors that are multiplexable using these approaches, and comparisons are drawn between the two methods. The sensors used have been qualified for shipboard application and thus compete directly with electrical equivalents.
© (1994) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Michael J. Ransford, Henry K. Whitesel, and Carl P. Jacobson "Redundant multiplexing topologies of Fabry-Perot sensors for shipboard applications", Proc. SPIE 2294, Distributed and Multiplexed Fiber Optic Sensors IV, (21 September 1994); https://doi.org/10.1117/12.187394
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