A multi-optical-fiber array with charge-coupled device image detection for parallel processing of light signals and spectra

We describe a new two-dimensional multioptical-fiber array (MOFA) with 144 elements, its use with charge-coupled device (CCD) image detection to perform parallel processing for light intensity measurements, and its use with a concave aspherical grating and CCD image detection to perform parallel processing for spectrometry. Each 2-m fiber extending from the MOFA is individually sheathed in a flexible, opaque cover. The light signals can be measured simultaneously with cross-talk ranging from 0.4% to 0.03% of the peak signal, depending upon configuration. We characterize the instrument in both the intensity and the spectrometric configurations, and present techniques for optimizing performance.

Duke Scholars

Author Tuan Vo-Dinh Biomedical Engineering