Abstract
Conventional beam steering for optical sensors is mechanically complex, consisting of a large number of optical and mechanical components. Steering the field of view requires large and heavy gimbal components. One approach to non-mechanical beam steering consists of a phase-modulated optical fiber array. Agile beam steering of optical radiation using fiber arrays offer significant advantages, such as weight, stability, speed and power requirements, over conventional beam steering systems based on large optics telescopes and gimbals. This paper represents an analysis of an agile beam steering system incorporating a fiber array and phase modulator to continually track a moving object. Expressions and modeling of the far-field beam pattern and off-axis beam steering efficiency are presented.
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