OPTICAL DUO BINARY TRANSMISSION APPARATUS USING POLARIZATION MODULATOR

PROBLEM TO BE SOLVED: To provide an optical duo binary transmission apparatus using duo binary modulation technique. SOLUTION: The optical duo binary transmission apparatus has a precoder to code input binary data signals, a low pass filter to change coded binary data signals into 3 level signals, a...

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Bibliographic Details
Main Authors KIM SUNG-KEE, LEE HAN-LIM, KIN KUN, HWANG SEONG-TEAK
Format Patent
LanguageEnglish
Published 29.09.2005
Edition7
Subjects
DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
FREQUENCY-CHANGING
NON-LINEAR OPTICS
OPTICAL ANALOGUE/DIGITAL CONVERTERS
OPTICAL LOGIC ELEMENTS
OPTICS
PHYSICS
TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF
TRANSMISSION
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Summary:PROBLEM TO BE SOLVED: To provide an optical duo binary transmission apparatus using duo binary modulation technique. SOLUTION: The optical duo binary transmission apparatus has a precoder to code input binary data signals, a low pass filter to change coded binary data signals into 3 level signals, a light source to form light, a polarization modulator to modulate the polarization of output light from the light source in accordance with the 3 level signals, and a polarizer to transmit only optical signals in a predetermined polarization direction. COPYRIGHT: (C)2005,JPO&NCIPI
Bibliography:Application Number: JP20050074212