Method and apparatus for polarized optical telecommunications us

Details Method and apparatus for polarized optical telecommunications us Method and apparatus for polarized optical telecommunications us

1993-04-01

1995-01-03

Healy, Brian

Optical waveguides

Polarization without modulation

385 2, 385 7, 385 8, 385 24, 385 48, 385 88, 385 89, 25022717, 359113, 359127, 359156, 359305, 359315, G02B 610

Patent

active

053793579

ABSTRACT:
An apparatus and method for optical telecommunication includes introducing a laser beam emitted from a light source at a first station into an optical fiber, providing an ultrasonic wave obtained by modulating a voice signal by a signal-applying-device at a work section to the optical fiber, modulating a polarized light passing through the optical fiber in amplitude and frequency, receiving the polarized light with the shifted wave plane at a light-receiving section in a second station, detecting at the light-receiving section in the second station the polarized light which has been modulated by the signal-applying device in the work section, and demodulating the polarized light to obtain a voice signal.

REFERENCES:
patent: 4666255 (1987-05-01), Taylor et al.
patent: 4729620 (1988-03-01), Pavlath
patent: 4735476 (1988-04-01), Heffner et al.
patent: 4759624 (1988-07-01), Calvani et al.
patent: 4792207 (1988-12-01), Shaw et al.
patent: 4840482 (1989-06-01), Shigematsu et al.

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