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US 4,057,322 AGranted
Precision surface optical fibers
AssigneeInternational Telephone and Telegraph Corporation
InventorCharles K. Kao
Life of this patent
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Abstract
Methods and apparatus are disclosed for forming a precision three-dimensional surface to clad optical fibers. One embodiment provides means for deforming the fiber end to conform to the geometry of the interstice formed between three tangential and parallel cylinders. The precision three-dimensional fiber end enables accurate low loss coupling between the fibers to be achieved through the accurate reference planes presented.
Claims12
A precision formed optical fiber comprising:
- cylindrical core means for transmitting light energy through said fiber;
- cladding means for promoting total internal reflection within said fiber;
- and
- at least three intersecting reference planes formed on the surface of the cladding for providing low light loss connection with said fiber.
1 more element
Dependencies are inferred from the claim text.