| 摘要 |
<p>A fiber optic coupler has at least two optical fibers (68, 70) each having a core (52) with a cladding material (54) disposed thereabout. The fibers, in a limited length coupling region, (56) have the cladding material removed and the core exposed, the thickness of the cladding material (54) increasing in smooth transition from immediately adjacent the exposed core (52) in the limited length coupling region (56). The fibers (68, 70) in the limited length coupling (56) region are joined by coalescing. In preferred embodiments, in the limited length coupling region, (56) a portion of the core (52) is removed, the core diameter in the coupling region (58) being less than the core diameter in regions adjacent thereto, (60, 62) the outer diameter of the core decreasing in smooth transition from immediately adjacent the cladding material (64, 66). A method and product of forming these couplers or others with the fibers in crossed relationship are also described.</p> |
