Multiaxis Strain Sensor and Fiber Optic Network

Physical Optics Corporation proposes to develop a novel fiber optic unified sensor system (NOFUSS) for multiaxis strain measurements in multiple locations within the body/canister of vertical launch missiles. This multisensor system connects as many as 48strain sensors, each acquiring data on strain in three dimensions. These sensors are interrogated through optical fibers, with the signals time, wavelength, and space division multiplexed to acquire data at sampling rates exceeding 5 kHz for each sensor.The fabrication of the NOFUSS system is based on MEMS and fast data acquisition system technology, and will ensure that the life span of the sensors is no shorter than the design life cycle of the missile itself. These sensors and light delivery fiberssatisfy all military requirements for ruggedness and environmental stability. In Phase I a working model of the NOFUSS system will be demonstrated with several MEMS fiber optic 3D strain sensors and a fast data acquisition system; in Phase II a completeprototype system will be developed to show how NOFUSS will monitor U.S. Navy missiles.