THE STRUCTURE OF NONLINEAR GRATING COUPLER

본 발명은 비선형 격자 결합기(nonlinear grating coupler)의 구조에 관한 것으로, 특히 가늘어지는 비선형 박막(tapered nonlinear thin film)과 선형 광도파로 격자 구조(liner waveguide grating structure)가 접합된 구조와, 계단형 비선형 박막(stepped nonlinear thin film)과 선형 광도파로 격자 구조가 접합된 형태의 비선형 격자 결합기의 구조에 관한 것이다. A structure for a nonlinear grating coupler which...

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Bibliographische Detailangaben
Hauptverfasser:	SONG, SUCK-HO, JUNG, JOUNG-SUL
Format:	Patent
Sprache:	eng ; kor
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 ELEMENTS, SYSTEMS, OR APPARATUS OPTICAL LOGIC ELEMENTS OPTICS PHYSICS TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF
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Zusammenfassung:	본 발명은 비선형 격자 결합기(nonlinear grating coupler)의 구조에 관한 것으로, 특히 가늘어지는 비선형 박막(tapered nonlinear thin film)과 선형 광도파로 격자 구조(liner waveguide grating structure)가 접합된 구조와, 계단형 비선형 박막(stepped nonlinear thin film)과 선형 광도파로 격자 구조가 접합된 형태의 비선형 격자 결합기의 구조에 관한 것이다. A structure for a nonlinear grating coupler which is capable of providing a structure that a tapered nonlinear thin film and a linear waveguide grating structure are combined and a nonlinear grating coupler that a stepped nonlinear thin film and a linear optical waveguide grating structure are combined. The structure includes a tapered nonlinear thin film having a third-order nonlinearity, a linear optical waveguide having a refractive index greater than a linear refractive index of a nonlinear thin film formed on the tapered nonlinear thin film, and a grating structure formed on the linear optical waveguide.