Radiological and nuclear optical sensor

Details Radiological and nuclear optical sensor Radiological and nuclear optical sensor

2008-09-17

2011-10-04

Le, Uyen Chau N (Department: 2874)

Optical waveguides

Optical waveguide sensor

C385S037000, C250S227140

Reexamination Certificate

active

08031989

ABSTRACT:
Optical systems for sensing radiation emissions from radiological and nuclear matter. An example system includes a light source, a light sensor, a processing device in signal communication with the light source and the light sensor, and a fiber optic cable that receives light from the light source and delivers light to the light sensor. The fiber optic cable includes an optical fiber core region surrounded by a cladding region. 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 positioned to provide single mode light propagation properties. The plurality of lengthwise holes have a diameter between 0.1-5 μm.

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Girard et al. , “Gamma-Radiation-Induced Attenuation in Photonic Crystal Fibre”, “Electronic Letters”, Sep. 26, 2002, vol. 28, No. 20.

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