| 摘要 |
<p>Optical systems for sensing radiation emissions from radiological and nuclear matter. An example system (10) includes a light source (14), a light sensor (18), a processing device (12) in signal communication with the light source and the light sensor, and a fiber optic cable (16) that receives light from the light source and delivers light to the light sensor. The fiber optic cable includes an optical fiber core (36) region surrounded by a cladding region (34). The optical fiber is a single mode optical fiber having a mode field diameter greater than 25 µm. The optical fiber cladding region includes a plurality of lengthwise holes (40) positioned to provide single mode light propagation properties. The plurality of lengthwise holes have a diameter between 0.1-5 µm.</p> |
