To reduce optical loss within fiber optic mechanical splices and connectors, apply optical couplant (matching gel) at the interface of the two mated fibers. incident petroleum-jelly-like buffer or temporary test jack gels. of the input light fiber, often fused silica glass, which has a They offer zero oil leed, crystal clarity. Thorlabs offers reusable, mechanical fiber-to-fiber splices that are designed for splicing two single mode or multimode fibers. The TS126 Mechanical Fiber-to-Fiber Splice is compatible with fibers that have cladding sizes between Ø125 µm and Ø140 µm. During assembly, no need glue dispensing and polish. Usually ships within 24 hours. 52 @ 589nm) that eliminates the fiber-to-air interface.