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Hitachi Ltd
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Hitachi Ltd
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Application filed by Hitachi LtdfiledCriticalHitachi Ltd
Priority to JP5318475ApriorityCriticalpatent/JPS51129250A/en
Publication of JPS51129250ApublicationCriticalpatent/JPS51129250A/en
PURPOSE:Obtain a compact optical modulator with low halfwavelength voltages by phase modulating light after coupling the branching optical paths by impressed electrical field.