Filter for a light wave in a light guiding fiber

Details Filter for a light wave in a light guiding fiber Filter for a light wave in a light guiding fiber

1977-01-12

1979-02-13

Corbin, John K.

350 9630, 350164, G02B 514

Patent

active

041392620

ABSTRACT:
A filter comprising multiple cylindrical layers of alternately high- and low-refractive materials and surrounded by a light-absorbent material with an outer diffusing surface is deposited by evaporation about a short axial length of a glass fiber to polarize or spectrum-filter light passing through said fiber. The indices of refraction of the filter layers are higher than the effective guide indices of the modes of the fiber core.

REFERENCES:
patent: 3436141 (1969-04-01), Comte
patent: 3621457 (1971-11-01), Cuff
patent: 3949315 (1976-04-01), Zeidler
patent: 4000416 (1976-12-01), Goell
patent: 4006964 (1977-02-01), Mahlein et al.

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