| 摘要 |
A multimode optical fiber is used in a confocal light-collection arrangement. A confocal aperture is supported in intimate proximity with respect to the first end of the fiber, preferably within two core diameters from the first end of the fiber. In the preferred embodiment, the confocal aperture is formed directly onto the first end of the fiber using, for example, photolithography or photoablation of a thin metallic film adhered directly to the light-collection end of the multimode fiber.
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