Abstract: There is provided by this invention packaging for fiber optic devices that utilizes two concentric cylinders such that one end of the inner cylinder is rigidly fixed to the outer cylinder, while the other end is flexibly attached to the outer cylinder. This attachment isolates the inner tube which supports the fiber optic device from the axial compressive strain subjected to the outer tube. An overall flexible sealing material is applied to seal the device.

Abstract: There is provided by this disclosure a method and apparatus for making fiber optic couplers that is comprised generally of the steps of stretching a fused optical fiber pair at a predetermined rate to produce first a tapered section, second a constant diameter cylindrical section, and third a final tapered section. The two optical fibers are placed in juxtaposition under a predetermined load, heated to a predetermined temperature until they fuse together to form a single entity having a predetermined width, length and circular cross section. The two moveable platforms apply a predetermined tensile load to the fibers and move the fibers past a heat source in a controlled manner to form the different sections.

Abstract: A fiber optic coupler is provided having first and second optical fibers fused together along a predetermined length having fused tapered ends for the input and output of optical energy and a constant diameter section therebetween to facilitate coupling of optical energy between the first and second optical fibers. The constant diameter section provides a higher efficient coupling action and a stronger, more rugged coupler.