Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Patent
1977-11-03
1978-11-14
Smith, Alfred E.
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
350 9619, G02B 514, H01J 516, H01J 3912
Patent
active
041257685
ABSTRACT:
A launcher for waves of selected mode in an optical dielectric waveguide having a core surrounded by cladding, in which the launcher includes a prism of refractive index greater than that of the waveguide and preferably greater than that of the core of the waveguide which is placed against the waveguide either before or alongside an outwardly tapering portion of the waveguide. Light from a laser is directed through the prism on to the waveguide to induce the waves in the waveguide. A matching fluid, which may set to a solid, improved the coupling of the prism to the waveguide. A detector of similar construction is also described, the tapering of the waveguide being inward.
REFERENCES:
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patent: 3586872 (1971-06-01), Tien
patent: 3610727 (1971-10-01), Ulrich
patent: 3617109 (1971-11-01), Tien
patent: 3777149 (1973-12-01), Marcatili
patent: 3810688 (1974-05-01), Ballman et al.
patent: 3832567 (1974-08-01), Jacques et al.
patent: 3905676 (1975-09-01), Ulrich
patent: 4060308 (1977-11-01), Barnoski et al.
Jackson Lynden A.
Midwinter John E.
Moore David K.
Post Office
Smith Alfred E.
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