公开(公告)号：US3804489A

公开(公告)日：1974-04-16

申请号：US31268272

申请日：1972-12-06

Applicant: BELL TELEPHONE LABOR INC

Inventor： LI T ,  STANDLEY R

IPC: G02F1/035 ,  G02F1/313 ,  G02F1/26

CPC classification number: G02F1/035 ,  G02F1/3137 ,  G02F2201/124 ,  G02F2201/302

Abstract: An optical switch useful in thin-film electro-optic light guides relies on an induced stationary diffraction grating. The grating is produced by an interdigital electrode structure which is deposited on the electro-optic guide. The application of a voltage to the electrode pattern produces a spatial modulation of the refractive index of the guide which acts as a diffraction grating to light traveling in the guide. This grating causes light in the guide to be diffracted out of the guide, thereby stopping transmission. Removal of the voltage eliminates the grating and restores transmission.

Abstract translation: 用于薄膜电光导光子的光学开关依赖于诱导的固定衍射光栅。 光栅由沉积在电光导体上的叉指电极结构产生。 向电极图案施加电压产生作为衍射光栅的导向器的折射率的空间调制以在导向器中行进的光。 该光栅使引导件中的光从引导件衍射出来，从而停止传输。 去除电压消除光栅并恢复传输。

公开(公告)号：US3801185A

公开(公告)日：1974-04-02

申请号：US3801185D

申请日：1972-12-06

Applicant: BELL TELEPHONE LABOR INC

Inventor： RAMASWAMY V ,  STANDLEY R

IPC: G02F1/035 ,  G02F1/26

CPC classification number: G02F1/035

Abstract: An optical switch for thin-film light guides utilizes electrically induced changes in the index of refraction of the switch material to produce the switching effect. Electrodes located along the length of the switch material and separated from it by an insulating layer induce an electric field in a region of the switch material when a voltage difference is applied to them. This causes the index of refraction to increase in that region to such an extent that a light guide is formed in the switch material, allowing transmission through the switch. Removal of the voltage destroys the guide, thereby stopping transmission.

Abstract translation: 用于薄膜光导的光学开关利用电感引起的开关材料的折射率的变化产生开关效应。 沿着开关材料的长度定位并且通过绝缘层与其分离的电极在施加电压差时在开关材料的区域中引起电场。 这导致该区域中的折射率增加到在开关材料中形成光导的程度，从而允许透过开关。 电压的消除会破坏导轨，从而停止传输。