Method and apparatus for polarized optical telecommunications using ultrasonic modulation means

Method and apparatus for polarized optical telecommunications using ultrasonic modulation means

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, modulat...

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Hauptverfasser: MIYAZAKI, MITSUO, FUJISAKI, AKIRA, MIZUTANI, MORINOBU, SENTSUI, SHINTARO, OGOSHI, HARUKI
Format: Patent
Sprache:eng
Schlagworte:
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
TRANSMISSION
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creator MIYAZAKI
MITSUO
FUJISAKI
AKIRA
MIZUTANI
MORINOBU
SENTSUI
SHINTARO
OGOSHI
HARUKI
description 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.
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subjects ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
TRANSMISSION
title Method and apparatus for polarized optical telecommunications using ultrasonic modulation means
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