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9 terms
Photonics Dictionary: P
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fiber core x
P x
packing density
1. In a photonic interconnect, the number of detectors in a given area. Detectors spaced too closely may give rise to crosstalk. 2. In the cross section of a fiber optic bundle, the ratio of fiber...
packing fraction
The ratio of the active core area of a fiber bundle to the total area at its light-emitting or receiving end.
plastic fiber
Fiber in which both core and cladding are made of plastic.
plastic jackets
The direct cladding used for fused silica cores to create large numerical aperture fibers and used as overcoats to glass-clad fibers to reduce microbend loss and increase mechanical protection.
plastic optical fiber
Plastic optical fiber (POF) is a type of optical fiber made from transparent plastic, typically polymethylmethacrylate (PMMA) or polycarbonate. Unlike traditional glass optical fibers, which are made...
plastic-clad silica fiber
An optical waveguide having a silica core and a plastic cladding.
profile dip
->
index dip
The decrease in the refractive index at the center of a fiber's core, caused by certain fabrication techniques. Also called profile dip.
projecting core coupler
A device that couples a light source to an optical fiber by projecting an image of the source and the fiber core onto a screen where they can be superimposed by micropositioners.
pulse reduction factor
Factor that relates the pulse spread occurring in a graded-index fiber to that of an equivalent step-index fiber having an identical refractive index difference between core and cladding (that is, an...
Photonics Dictionary
P
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