Main fiber value of the beam splitter
Beam splitters in PON networks are often made with single-mode optical fiber, by exploiting evanescent wave coupling between a pair of fibers to share the beam between them. A beam splitter or beamsplitter is an optical device that splits a beam of light into a transmitted and a reflected beam. The choice between these two methods depends on the specific requirements of the optical. Light from an input fiber is first collimated, then sent through a beam splitting optic to divide it into two.
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