IQ optical modulator

An IQ optical modulator having an MZ optical waveguide of a nested structure, the MZ optical waveguide of the nested structure having an I/Q channel optical modulation region, in which an end portion of an input optical waveguide and an end portion of an output optical waveguide of the IQ optical mo...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	OZAKI JOSUKE, NUNOTANI, NOBUHIRO, HASHIZUME, YASUAKI, OGISO, YOSHIHIRO, ISHIKAWA MITSUTERU
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	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 FREQUENCY-CHANGING NON-LINEAR OPTICS OPTICAL ANALOGUE/DIGITAL CONVERTERS OPTICAL LOGIC ELEMENTS OPTICS PHYSICS TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF
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Beschreibung
Zusammenfassung:	An IQ optical modulator having an MZ optical waveguide of a nested structure, the MZ optical waveguide of the nested structure having an I/Q channel optical modulation region, in which an end portion of an input optical waveguide and an end portion of an output optical waveguide of the IQ optical modulator are located on the same end face of a chip of the IQ optical modulator, the IQ optical modulator is provided with an optical crossing waveguide in which an optical waveguide between a first optical multiplexer and a second optical multiplexer of an MZ optical waveguide having a nested structure intersects an input optical waveguide, and a first optical demultiplexer is provided between the I-channel optical modulation region and the Q-channel optical modulation region, and a second optical demultiplexer is provided between the Q-channel optical modulation region and the I-channel optical modulation region. The light transmission direction in the first optical wave separator is opposite to the light transmis