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CeramOptec - Fused Tapered Optical Fiber
A tapered optical fiber is used e.g. to lead a collimated beam with a relatively large diameter into a smaller fiber or to get a better energy density in the immediate vicinity of the fiber output. CeramOptec in cooperation with Ceram Optec SIA offers fused and tapered optical fibers of the highest quality. All tapered assemblies are available with standard connectors or individually designed ferrules.
The tapered part is very short (approx. between 5mm and 100mm)
In a fused-end taper the “real” taper is very short and can completely be built in a SMA connector. The thin end of this taper is spliced to a standard fiber. Fused-end tapers are more cost effective compared to continuous tapers and can be built with a customized ratio of input diameter to output diameter.
e.g.: Core A: 200µm, Core B: 100µm, Fiber type: WFGe.
Additional information
A tapered optical fiber modifies the geometry of an input beam by reducing its diameter and enlarging its output angle.
In other words, a tapered optical fiber acts as a converter of the numerical aperture (and beam diameter) by converting the NA of the input beam according to the following formula:
NAo = R x NAi
Where: NAo = Output NA (pigtail NA)
NAi = Input NA
R = Ratio of taper input diameter to output diameter