Ray-path equalizer for signal-transmission system using multimod

Details Ray-path equalizer for signal-transmission system using multimod Ray-path equalizer for signal-transmission system using multimod

1977-07-15

1979-12-11

Levy, Stewart J.

350 9619, G02B 514

Patent

active

041780663

ABSTRACT:
Signals, especially short pulses, are transmitted by way of a series of aligned light guides with internally reflecting boundaries (i.e. fibers or foils), with interposition of two identical transparent elements each refracting incident rays from the proximal guide end toward the remote guide end along paths which intersect the common guide axis at points near the center of the respective element for angles of incidence close to zero and at points near the center of the opposite element for angles of incidence close to a critical angle .THETA..sub.M << 1 (in radians). The transparent elements could be planoconvex lenses, which may be divided into Fresnel zones, or holograms; they could also be replaced by an optically equivalent transparent body whose refractive index varies along a generally parabolic law with increasing distance from the axis.

REFERENCES:
patent: 3759590 (1973-09-01), Arnoud
patent: 3809455 (1974-05-01), Pekaw et al.
patent: 3832030 (1974-08-01), Gloge
patent: 3975082 (1976-08-01), Winzer
patent: 3980391 (1976-09-01), Stewart
patent: 4077701 (1978-03-01), Steensma et al.

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