July 2024
Intermediate to advanced
280 pages
12h 52m
English
Content preview from The Essential Handbook of Polymer Terms and Attributes
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166 Polymer Optical Fiber Amplifiers
Polymer optical fiber amplifiers (POFAs) are optical amplifiers based on polymer optical fibers as gain media. In most cases, the gain medium is doped with rare earth ions such as erbium, neodymium, ytterbium, praseodymium, or thulium. This active dopant is pumped (provided with energy) with light from a laser, such as a fiber-coupled diode laser; in almost all cases, the pump light propagates through the fiber core together with the signal to be amplified.
PMMA (acrylic), polystyrene, and polycarbonates are polymers that are often applied as POFs. As a typical example, a POF may have a PMMA core surrounded by a fluorinated cladding, with a lower refractive index. Alternatively, ...
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