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Characterization of single and double fiber-coupled diffusing spheres

机译：单和双光纤耦合扩散球的表征

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A fiber-optic sensor, consisting of an optical fiber with and without a 1.59-mm-diameter spherical ceramic tip, inserted into a 19-mm-diameter Spectralon sphere has been characterized. This sensor is evaluated as a large-area omnidirectional sensor. An optical transport measurement system that rotates the sphere about two axes has been designed. The system measured the UV transport efficiency at 351 nm of light impinging on the sphere with an f-6 cone angle. When a bare fiber was placed at the center of the target sphere, the detection sensitivity was biased in the forward direction. The peak of the sensitivity of the inverse integrating sphere shifted from front to back as the bare fiber was withdrawn from the sphere and the numerical aperture of the fiber viewed more of the scattering volume. The response function with respect to the angle of incidence of the dual sphere was much more uniform than that obtained with a bare fiber in the center of the sphere.
机译：已对插入到直径为19 mm的Spectralon球中的光纤传感器进行了表征，该传感器由具有和不具有1.59 mm直径的球形陶瓷尖端的光纤组成。该传感器被评估为大面积全向传感器。设计了一种使球体绕两个轴旋转的光学传输测量系统。该系统在351 nm的光以f-6锥角入射到球体上时测量了UV传输效率。当将裸光纤放置在目标球体的中心时，检测灵敏度会向前偏。当从裸球中抽出裸光纤时，逆积分球的灵敏度峰值从前向后移动，并且光纤的数值孔径更多地体现在散射体积上。关于双球的入射角的响应函数比在球的中心使用裸光纤获得的响应函数要均匀得多。

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