Multiclad Plastic Scintillating, Wavelength Shifting and Optical Fibers Preliminary Specifications A Typical Round Scintillating Fiber General Description and Preliminary Data Standard fiber optics consist of a core having a high refractive index that is clad with a material having a lower refractive index. The mismatch of indices sets the conditions for total internal reflection and gives the fiber its wave guiding properties. Multiclad fibers have a second layer of cladding, applied over the standard cladding. This outermost layer has an even lower refractive index thus permitting total internal reflection at a second boundary. The additional photons guided within multiclad fibers increase the output signal up to 60% over conventional single clad fibers. All of the fiber types Bicron has produced as single clad fibers can be made as multiclad fibers. Material Properties Core material Polystyrene   refractive index 1.60   density 1.05 First cladding material Acrylic   refractive index 1.49   thickness in round fibers 3% of fiber diameter   thickness in square fibers 4% of fiber size Second cladding material Fluoro-Acrylic   refractive index 1.42   thickness in round fibers 1% of fiber diameter   thickness in square fibers 1% of fiber size Preliminary Specifications Optical and Physical Properties Numerical Aperture 0.74 Trapping Efficiency,   round fibers 5.6% minimum   square fibers 7.3% Radiation length 42 cm. Operating Temperature -20°C to +50°C Vacuum compatible Yes Atomic Composition Number of H atoms per cc (core) 4.82 x 1023 Number of C atoms per cc (core) 4.85 x 1023 Number of electrons per cc (core) 3.4 x 1023 [ Scintillating and fluorescent fibers ] Organic Products | Inorganic Scintillation Products | Crystal Products Bicron RMP | Optics and Oxides | Crismatec | Product Search/Faq Company Profile | News | Contact Us | NE Technology | Home