Ferrules & Splices - For Optical Fibers

One type of optical fiber coupling is a precision quartz tube in which the center bore is tapered from either end to a precision fit for the diameter of the optical fiber being used. The precision taper allows excellent alignment of two fiber ends when they are inserted from opposite ends of the coupler.

Another coupler is one used in WDM and other applications where two fibers need to be aligned side by side very accurately. Thermal, mechanical and optical parameters must be taken into account. A quartz capillary with a center that has a rectangular shape or precision separate dual ID’s are used. The entrance has a taper to help pack the two fibers together as they are inserted. For other multiple fiber applications, the quartz tube can have a variety of shapes. Square, circular, elliptical, rectangular or triangular interior shapes can be produced. With the appropriate preforms, couplers of many sizes can be fabricated.

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