Wavelength Division Multiplexed Fiber Optic Sensors For Aircraft Applications
Norris E. Lewis, Michael B. Miller · Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE · 1989
This paper describes the design and performance of a sensor system based on passive fiber optic sensors utilizing the principle of wavelength division multiplexing. The system is discussed in relation to the requirements of aircraft applications. The requirements on the source, sensor and detection circuits are outlined and a detailed power budget for a 12 bit rotary sensor is given. Measured performance of the various components is presented, along with a discussion of the environmental conditions found in various application areas within the aircraft. The wavelength sensing technique becomes the basis for a common sensor interface, and various techniques are described to provide capability for multiplexing many sensors onto one common interface.