Radiant energy – Ionic separation or analysis – Static field-type ion path-bending selecting means
Patent
1979-11-06
1981-05-12
Corbin, John K.
Radiant energy
Ionic separation or analysis
Static field-type ion path-bending selecting means
250227, 350 9633, G02B 514
Patent
active
042668514
ABSTRACT:
A coupler for a concentric core optical fiber comprises a step index fiber having an inner core diameter equal to the diameter of the inner core of the concentric fiber. The inner cores of both fibers are aligned and face each other. When positioned in this manner, the cladding layer of the step index fiber is also aligned with the isolation zone of the concentric core fiber and the outer core of the concentric core fiber is aligned with the substrate of the step index fiber. A large glass rod or cane is then fused to the outer periphery of the step index fiber to cause light propagating in the substrate to couple to the cane. The light thus propagating is indicative of the light that is transmitted by the concentric fiber in the outer core. The signal propagating in the inner core of the step index fiber represents the signal propagating in the inner core of the concentric core fiber and can be detected by an ordinary detector. Another detector is coupled to the cane member and provides a signal proportional to the signal propagating in the outer core of the concentric fiber.
REFERENCES:
patent: 4000416 (1976-12-01), Goell
patent: 4054366 (1977-10-01), Barnoski et al.
patent: 4076375 (1978-02-01), Muska et al.
patent: 4135780 (1979-01-01), Dyott
patent: 4149772 (1979-04-01), Iyengar et al.
patent: 4169656 (1979-10-01), Hodge
patent: 4201447 (1980-05-01), Thompson et al.
"Research Toward Optical-Fiber Transmission Systems, Part II", Miller et al., Proc. of IEEE, vol. 61, No. 12, Dec. 1973, pp. 1726-1751.
Corbin John K.
International Telephone and Telegraph Corporation
Lee John D.
O'Halloran John T.
Van Der Sluys Peter C.
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