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    • 1. 发明专利
    • Integrated optical waveguide device
    • 集成光学波导器件
    • JP2003066393A
    • 2003-03-05
    • JP2002189716
    • 2002-06-28
    • Corning Oti Spaコーニング オーティーイー エッセピーアー
    • PRUNERI VALERIO
    • G02F1/035G02F1/225
    • G02F1/2255G02F1/0356G02F2202/07G02F2203/21
    • PROBLEM TO BE SOLVED: To provide an integrated optical waveguide device that suppresses a DC drift phenomenon by a pyroelectric or piezoelectric effect. SOLUTION: An optical integrated circuit device is provided with a substrate of a ferroelectric material having first and second surfaces perpendicular to a direction of spontaneous polarization. At least a longitudinal waveguide section of at least one waveguide is formed in a first substrate region having a first orientation of spontaneous polarization of a first surface. At least one second substrate region is provided on the first surface adjacent to the first substrate region transversally to the longitudinal substrate section. An electric field component tangential to the first surface is developed in consequence to polarization or free charges generated by one or more of pyroelectric, piezoelectric and photovoltaic effects. A material layer containing mobile charges is associated with the first surface, a displacement of the mobile charges is induced by the tangential electric field component, which substantially compensates the polarization or free charges in the substrate to reduce an electric field component perpendicular to the at least longitudinal substrate section.
    • 要解决的问题:提供通过热电或压电效应抑制DC漂移现象的集成光波导装置。 解决方案:光集成电路器件设置有具有垂直于自发极化方向的第一和第二表面的铁电材料的衬底。 在具有第一表面的自发极化的第一取向的第一衬底区域中形成至少一个波导的至少一个纵向波导部分。 至少一个第二衬底区域设置在与第一衬底区域相邻的第一表面上横向于纵向衬底部分。 由于由一个或多个热电,压电和光​​电效应产生的极化或自由电荷,开发了与第一表面相切的电场分量。 含有移动电荷的材料层与第一表面相关联,移动电荷的位移由切向电场分量引起,其基本上补偿了衬底中的极化或自由电荷,以减少垂直于至少 纵向衬底部分。
    • 4. 发明专利
    • Coplanar integrated optical waveguide electro-optical modulator
    • 共聚光学波导电光调制器
    • JP2003066394A
    • 2003-03-05
    • JP2002189715
    • 2002-06-28
    • Corning Oti Spaコーニング オーティーイー エッセピーアー
    • PRUNERI VALERIONESPOLA ANTONINO
    • G02F1/03G02F1/035G02F1/225
    • G02F1/225G02F1/035G02F2201/126
    • PROBLEM TO BE SOLVED: To provide chirp-free coplanar waveguide modulators and single-drive double coplanar strip modulators. SOLUTION: A coplanar integrated optical waveguide electro-optical modulator comprises a substrate of an electro-optic material, at least two optical waveguides 41 and 42 integrated on a corresponding surface of the substrate, and electrode systems 80, 90 and 100 arranged on the surface for applying a modulating electric field to the waveguide suitable for causing a modulation of refractive index of the two waveguides in a device modulation region. The waveguides are formed, for at least a section thereof (411, 421) in the device modulation region, in respective substrate regions which have electro-optic coefficients of opposite sign along an axis transversal to the waveguide sections, so that a modulating electric field of same direction and orientation in the waveguide sections causes refractive index modulations of opposite sign in the waveguide sections.
    • 要解决的问题:提供无啁啾共面波导调制器和单驱动双共面条形调制器。 解决方案:共面集成光波导电光调制器包括电光材料的衬底,集成在衬底的相应表面上的至少两个光波导41和42以及布置在表面上的电极系统80,90和100 用于将适应于在器件调制区域中引起两个波导的折射率的调制的波导施加调制电场。 在器件调制区域的至少一部分(411,421)上,在沿着与波导部分横向的轴线具有相反符号的电光系数的各个衬底区域中形成波导,使得调制电场 在波导部分中具有相同方向和取向的波导部分中引起相反符号的折射率调制。