OPTICAL SEMICONDUCTOR DEVICE, OPTICAL COMMUNICATING SYSTEM USING THE SAME AND OPTICAL COMMUNICATION SYSTEM

OPTICAL SEMICONDUCTOR DEVICE, OPTICAL COMMUNICATING SYSTEM USING THE SAME AND OPTICAL COMMUNICATION SYSTEM

PURPOSE:To provide an optical semiconductor device and an optical communication system using the same for canceling polarization dependency in the case of optical communication. CONSTITUTION:In the case of optical communication for branching a signal by using a semiconductor waveguide filter 1 on a...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: ONO TAKEO, MAJIMA MASAO, ONOUCHI TOSHIHIKO
Format: Patent
Sprache:eng
Schlagworte:
BASIC ELECTRIC ELEMENTS
DEVICES USING STIMULATED EMISSION
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES
MULTIPLEX COMMUNICATION
NANOTECHNOLOGY
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
OPTICS
PERFORMING OPERATIONS
PHYSICS
SEMICONDUCTOR DEVICES
SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES
TRANSMISSION
TRANSPORTING
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Beschreibung
Zusammenfassung:PURPOSE:To provide an optical semiconductor device and an optical communication system using the same for canceling polarization dependency in the case of optical communication. CONSTITUTION:In the case of optical communication for branching a signal by using a semiconductor waveguide filter 1 on a reception side, two signals having difference wavelengths are transmitted on a transmission side while modulating semiconductor lasers 2 and 3 with the same modulated signal. Among two difference wavelengths on the transmission side, one wavelength is made coincident with the transmissive wavelength of the TE mode of the semiconductor waveguide filter 1 on the reception side, and the other wavelength is made coincident with the transmissive wavelength of the TM mode of the semiconductor waveguide filter 1. Otherwise, light is splitted into two beams and can be directly detected by two photodetectors.