Lens type optical equalizer for signal transmissions via...

Details Lens type optical equalizer for signal transmissions via... Lens type optical equalizer for signal transmissions via...

G - Physics

02

B

88/97.5

G02B 3/08 (2006.01) G02B 3/02 (2006.01) G02B 6/14 (2006.01)

Patent

CA 1069359

ABSTRACT OF THE DISCLOSURE A lens type optical mode delay equalizer for multimode optical waveguides requires only two parallel lenses as equalizing elements, these lenses each having a cross section corresponding to that which would be formed by cutting away parts of two identical converging lenses by cuts parallel to their optical axes, and joining the remaining portions at the cuts. The parallel lenses are spaced between the ends of two lengths of waveguide in accos- dance with a relationship involving various parameters of the lenses and the separation and maximum angle of propagation of the wave- guide. Practical lens configurations may be toroidal or cushion- cuspidal for circular waveguides and bicylindrical or cuspidal for ribbon waveguides.

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