OPTICAL SCANNING ELEMENT

An optical scanning device 1 includes a supporting body 2; an optical waveguide 4 composed of a single crystal having electro-optic effect and integrated with the supporting body 2 directly or through a clad layer 3; a plurality of periodic domain inversion parts 6A to 6D formed in the optical waveg...

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Bibliographische Detailangaben
Hauptverfasser:	OKADA, Naotake, ASAI, Keiichiro, EJIRI, Tetsuya, KONDO, Jungo, YAMAGUCHI, Shoichiro
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ANALOGOUS ARRANGEMENTS USING OTHER WAVES DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES 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 LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES MEASURING NON-LINEAR OPTICS OPTICAL ANALOGUE/DIGITAL CONVERTERS OPTICAL LOGIC ELEMENTS OPTICS PHYSICS RADIO DIRECTION-FINDING RADIO NAVIGATION TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF TESTING
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Beschreibung
Zusammenfassung:	An optical scanning device 1 includes a supporting body 2; an optical waveguide 4 composed of a single crystal having electro-optic effect and integrated with the supporting body 2 directly or through a clad layer 3; a plurality of periodic domain inversion parts 6A to 6D formed in the optical waveguide 4 , the periodic domain inversion parts having periods different from each other; and a plurality of electrodes 7A to 7D and 8A to 8D capable of applying voltages on the periodic domain inversion parts, respectively, to generate diffraction gratings in the periodic domain inversion parts, respectively. The clad layer 3 is composed of a material having a refractive index lower than a refractive index of the single crystal forming the optical waveguide. Each of the periodic domain inversion parts on which the voltage is applied is selected to generate the diffraction grating in the selected periodic domain inversion part so that a propagation light propagated in the optical waveguide is emitted to the outside of the optical scanning device as a diffracted light.