| 摘要 |
<p>A refractive index FOCS has a thin metal film clad (16) on a fiber optic core (12) so that transmission through the core (12) is strongly affected by the refractive index of a surrounding solvent. The clad (16) is made of platinum, or also of gold, rhodium or palladium. With a fluorescent tip (14), the changes in the fluorescent signal are a measure of the solvent refractive index. With a reflective tip (18), the changes in the reflected signal are measured. In a linear configuration, source and detector are placed at opposite ends of the fiber (22) and changes in the transmitted signal are measured as a function of solvent refractive index.</p> |
