OPTICAL MODULATOR AND OPTICAL TRANSMISSION DEVICE USING SAME

OPTICAL MODULATOR AND OPTICAL TRANSMISSION DEVICE USING SAME

It is possible to provide an optical modulator in which a transmission loss from a driver circuit element to a modulation substrate is reduced. An optical modulator includes a modulation substrate (1) that includes an optical waveguide (200) and a modulation electrode (10) for modulating a light wav...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: MIYAZAKI, Norikazu, KATAOKA, Toshio
Format: Patent
Sprache: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:It is possible to provide an optical modulator in which a transmission loss from a driver circuit element to a modulation substrate is reduced. An optical modulator includes a modulation substrate (1) that includes an optical waveguide (200) and a modulation electrode (10) for modulating a light wave propagating through the optical waveguide, a driver circuit element (2) that generates a modulation signal to be applied to the modulation electrode (10), and a case (3) that accommodates the modulation substrate (1) and the driver circuit element (2), in which an output terminal (20′) that outputs the modulation signal is provided on an upper surface side of the driver circuit element (2), and a wiring substrate (4) including a wiring that electrically connects the output terminal (20′) and the modulation electrode (10) is disposed above the driver circuit element (2) and the modulation substrate (1) to straddle both the driver circuit element (2) and the modulation substrate (1).