公开(公告)号：US6060334A

公开(公告)日：2000-05-09

申请号：US958581

申请日：1997-10-28

Applicant: Isao Tsuruma

Inventor： Isao Tsuruma

IPC: G02F1/313 ,  G02F1/035 ,  H01L21/00

CPC classification number: G02F1/035

Abstract: When forming electrodes for an optical waveguide element, a metal film is formed on a surface of a substrate, and openings of predetermined shapes are formed in the metal film. Then proton exchange is carried out on the surface of the substrate with the metal film used as a mask, and optical channel waveguides are thus formed. At least a part of edge portions of the metal film defining the openings is left on the substrate and the metal film is plated with plating metal. The metal film plated with the plating metal is processed into electrodes of predetermined shapes for applying an electric voltage to the optical channel waveguides.

Abstract translation: 当形成用于光波导元件的电极时，在基板的表面上形成金属膜，并且在金属膜中形成预定形状的开口。 然后在金属膜用作掩模的基板的表面上进行质子交换，从而形成光通道波导。 限定开口的金属膜的边缘部分的至少一部分留在基板上，金属膜被电镀金属镀覆。 将镀有电镀金属的金属膜加工成预定形状的电极，以向光通道波导施加电压。

公开(公告)号：US5838486A

公开(公告)日：1998-11-17

申请号：US759794

申请日：1996-12-04

Applicant: Shinichiro Sonoda ,  Isao Tsuruma ,  Masami Hatori ,  Kenji Matsumoto

Inventor： Shinichiro Sonoda ,  Isao Tsuruma ,  Masami Hatori ,  Kenji Matsumoto

IPC: G02F1/37 ,  G02F1/35 ,  G02F1/377

CPC classification number: G02F1/3775 ,  G02F2001/3548

Abstract: An optical wavelength conversion element includes an optical waveguide which is formed on a ferroelectric crystal substrate having a nonlinear optical effect and extends along one surface of the substrate, and domain reversals which are periodically formed in the optical waveguide and arranged in a direction. The orientation of the spontaneous polarization of the substrate is reversed in the domain reversals and the optical wavelength conversion element converts the wavelength of a fundamental wave travelling in the direction in which the domain reversals are arranged under the guidance of the optical waveguide. The orientation of the spontaneous polarization of the substrate is at an angle .theta. larger than 0.degree. and smaller than 90.degree. to the surface of the substrate in a plane normal to the direction in which the fundamental wave is guided.

Abstract translation: 光波长转换元件包括形成在具有非线性光学效应并沿着衬底的一个表面延伸的铁电晶体衬底的光波导和在光波导中周期性地形成并且沿一个方向布置的畴反转。 在畴反转中，衬底的自发极化的取向反转，并且光波长转换元件在光波导的引导下转换沿畴布置反转方向行进的基波的波长。 在与基波方向垂直的平面中，衬底的自发极化的取向与衬底表面成0°且小于90°的角度。