Dual-polarization fiber optic communications link

Details Dual-polarization fiber optic communications link Dual-polarization fiber optic communications link

1993-09-23

1995-06-13

Chilcot, Jr., Richard E.

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359181, 359187, 359188, H04B 1000

Patent

active

054248639

ABSTRACT:
A dual-polarization fiber optic communications link comprising a dual polarization light source for emitting a monochromatic lightwave having two polarizations, a polarization splitting coupler for separating the polarizations of the lightwave into a carrier signal and a standard signal, an optical modulator employing the carrier signal and an information signal to produce a double-sideband suppressed carrier signal with the polarization of the carrier, an optical signal combiner for combining the double-sideband suppressed carrier having one polarization with the lightwave standard having a different polarization, said combination occurring substantially without interaction between the respective signals, and the combined signals being coupled to a fiber optic transmission medium. The communications link permits greater modulation dynamic range than conventional amplitude-modulated optical communications links.

REFERENCES:
patent: 3752992 (1973-08-01), Fluhr
patent: 4893352 (1990-01-01), Welford

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