Abstract
A bent-tip optical angular displacement sensor was designed. The output function of the bent-tip fiber gained based on the bent-tip optical bundle structure analyzing. Effects of spacing p and angular α on receiving optical fiber bundle and the transmitting fiber was simulated, and the displacement h of transmitting fiber from reflect surface impact on the differential intensity is investigated. Sensor design parameters were selected, and results show that the angular displacement sensor have excellent linearity in measuring range from −20° to 20°.
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