OPTICAL TRANSMISSION DEVICE

OPTICAL TRANSMISSION DEVICE

PROBLEM TO BE SOLVED: To control the oscillation wavelength so that a wavelength shift may not arise and to further match the wavelength of a light source for wavelength multiplex optical telecommunications systems with an ITU-TS grid to make the wavelength variable. SOLUTION: An etalon 106 is locat...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: IDO TATSUMI, TATENO KIMIO, BABA NAOHIKO, IWATO TAISUKE, KUWANO HIDEYUKI
Format: Patent
Sprache:eng
Schlagworte:
BASIC ELECTRIC ELEMENTS
DEVICES USING STIMULATED EMISSION
ELECTRICITY
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Beschreibung
Zusammenfassung:PROBLEM TO BE SOLVED: To control the oscillation wavelength so that a wavelength shift may not arise and to further match the wavelength of a light source for wavelength multiplex optical telecommunications systems with an ITU-TS grid to make the wavelength variable. SOLUTION: An etalon 106 is located in an optical path of a semiconductor laser light made into a parallel plane wave by a collimator lens 102, and the wavelength of a semiconductor laser device is locked by making a difference between divided lights of a transmitted light or a reflected light into a wavelength error signal. COPYRIGHT: (C)2010,JPO&INPIT