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Fujitsu Ltd
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Fujitsu Ltd
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Application filed by Fujitsu LtdfiledCriticalFujitsu Ltd
Priority to JP8240876ApriorityCriticalpatent/JPS538091A/en
Publication of JPS538091ApublicationCriticalpatent/JPS538091A/en
PURPOSE:The oscillation modes of a semiconductor laser element are controlled as desired and the efficiency of utilizing laser light is enhanced by forming a translucent mirror at the light incident surface of an optical fiber for optical controlling.