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Abstract

A spectroscopic apparatus comprises a housing, a light source supported by the housing, a sample optical detector supported by the housing, an optical input selection device supported by the housing, a plurality of optical source lines, and a plurality of optical return lines. The optical input selection device is rotatable about a first axis and comprises a first internal optical fiber having a first input end and a first output end. The first input end is disposed collinearly with the first axis, and the first output end disposed at a radially offset distance from the first axis. The optical source lines have respective source line input ends. Each source line input end is selectively optically alignable with the first output end. The optical return lines have respective return line output ends. Each return line output end is supported by the housing and selectively communicates with the sample optical detector.

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First Claim