“…Remote absorbance measurements are also of interest, where fiber optics are utilized (5)(6)(7)(8)(9)(10)(11)(12)(13). Remote absorbance sensing is important in process analysis (5, 7, 9, 12, 13), in bioanalytical monitoring (6), and in field-portable or applied instruments (11). In each case, the fiber optic arrangement provides a means to successfully analyze an otherwise difficult 0003-2700/90/0362-0558502.50/0 sample environment.…”