Radiant energy – Ionic separation or analysis – Static field-type ion path-bending selecting means
Patent
1977-11-21
1978-12-05
Richardson, Robert L.
Radiant energy
Ionic separation or analysis
Static field-type ion path-bending selecting means
358901, 350 9613, H04B 900
Patent
active
041287592
ABSTRACT:
A fiber optic delay line filter receives light energy input signals repretative of any form of temporally varying signals such as electrical or acoustical, for example. A plurality of fiber optic light paths each having a determinably variant optical propagation delay, receives and transmits the light energy signals. A photo responsive means receives the delayed output light energy signals transmitted by the plurality of fiber optic light paths and produces a single electrical output signal as a function of the sum of the delayed output light energy signals, thus performing a filtering or correlation function. In a preferred embodiment, an injection laser or light emitting diode may be employed as the means for converting the temporally varying input signals to commensurate light energy signals. In a variant embodiment, a single fiber optic light path, having a partially reflective surface at each end, gives effect to multiple reflective transmissions along the length of the fiber optic light path which are then detected by a photo responsive device, providing a narrowband filter output as a function of the length and number of multiple reflective transmissions.
REFERENCES:
patent: 2451465 (1948-10-01), Barney
patent: 3604936 (1971-09-01), Kompfmer
patent: 3619620 (1971-11-01), Ring
patent: 3887939 (1975-06-01), Hunt
patent: 4079246 (1978-03-01), Misek
Dillard George M.
Hunt Barry R.
Taylor Henry F.
Coles Edward L.
McLaren J. W.
Richardson Robert L.
Rubens G. J.
Sciascia R. S.
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