Fiber optic mode selector

Details Fiber optic mode selector Fiber optic mode selector

1986-01-17

1989-05-09

Sikes, William L.

350 9619, G02B 626

Patent

active

048283509

ABSTRACT:
An all fiber mode selector comprises a single-mode optical fiber and a double-mode optical fiber, each having a facing surface formed on one side of the cladding. The facing surfaces are juxtaposed in close facing relationship. The fibers are selected so that an optical signal propagating in the LP.sub.11 propagation mode of the double-mode optical fiber propagates at substantially the same phase velocity as an optical signal propagating in the LP.sub.01 propagation mode of the single-mode optical fiber. The evanescent fields of the two fibers interact to couple optical energy from the LP.sub.11 mode of the double-mode optical fiber to the LP.sub.01 mode of the single-mode optical fiber and vice versa.

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