Optimized parabolic-index optical fiber communication system wit

Details Optimized parabolic-index optical fiber communication system wit Optimized parabolic-index optical fiber communication system wit

1975-07-25

1977-04-26

Rubin, David H.

350 96GN, 350 96WG, G02B 514

Patent

active

040198057

ABSTRACT:
The disclosed optical fiber communication system employs a fiber with a core having an index of refraction graded in an approximately parabolic fashion and a light-emitting diode joined directly to the fiber to serve as the light source for the system. It has been found that the overall electrical efficiency of the system, at least with respect to drive power for the diode, is maximized when the ratio of the diode radius to the radius of the fiber core is about 0.2. More broadly, the ratio of radii is found advantageously to lie in the range between about 0.1 and about 0.8, not only for efficiency reasons but also to maximize the amount of light injected into the fiber.

REFERENCES:
patent: 3832028 (1974-08-01), Kapron
patent: 3904268 (1975-09-01), Keck et al.
Cook, Article in Scientific American Nov. 1973, pp. 28-35 cited.
Yang et al., Article in Applied Optics Feb. 1975, pp. 288-293 cited.

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