Concentric core optical fiber coupler

Details Concentric core optical fiber coupler Concentric core optical fiber coupler

1982-10-12

1984-08-14

Lee, John D.

350 9615, 350 9633, G02B 726

Patent

active

044653352

ABSTRACT:
A method for constructing and the resulting structural configuration of an nput coupler for a concentric core optical fiber comprises removing the outer protective material of a concentric core optical fiber to expose the outer core back a predetermined distance from the end which includes the intermediate protective material or cladding and the inner core. A plurality of single core optical fibers are stripped so that their respective cores are exposed whereupon they are bonded to the exposed outer core by a transparent index matching epoxy, which bonding is located at the transition region where the exposed outer core begins and the outer cladding ends. The outer end of the concentric core fiber element including the intermediate protective material and the inner core is cleaved and at least one other single core optical element is cleaved and bonded in end to end abutting relationship with the inner core by transparent index matching epoxy. Additionally, opaque material is located on either side of the bonds to attenuate any optical energy not coupled between the cores.

REFERENCES:
patent: 4008061 (1977-02-01), Ramsay
patent: 4252403 (1981-02-01), Salisbury
patent: 4266851 (1981-05-01), Salisbury
patent: 4314740 (1982-02-01), Bickel

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