Optical-fiber transmission system with polarization modulation a

Details Optical-fiber transmission system with polarization modulation a Optical-fiber transmission system with polarization modulation a

1987-04-03

1989-03-28

Griffin, Robert L.

Telecommunications

Receiver or analog modulated signal frequency converter

Signal selection based on frequency

455610, 455617, 455619, 329144, H04B 900

Patent

active

048172065

ABSTRACT:
Optical-fiber transmission system with heterodyne coherent detection in which, at the transmitting side, the polarization of an optical carrier is modulated, and at the receiving side the beam resulting from a combination of the modulated beam and a beam emitted from a local oscillator is split into two orthogonally-polarized components. The two optical signals are detected and sent to an electronic mixer which receives the two components and carries out a synchronous demodulation eliminating the effects of the linewidth of the source and of the local oscillator.

REFERENCES:
patent: 3191047 (1965-06-01), Oliver
patent: 3426207 (1969-02-01), Fried et al.
David Smith, "Coherent Fiberoptic Communications", Laser Focus/Electro Optics, Nov. 1985, pp. 92-106.
T. Okoshi et al., "Computation of Bit-Error Rate". . , Journal of Optical Communications, 1981, pp. 89-96.

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