Optical modulators
    41.
    发明申请
    Optical modulators 有权
    光调制器

    公开(公告)号:US20050047703A1

    公开(公告)日:2005-03-03

    申请号:US10683267

    申请日:2003-10-14

    IPC分类号: G02F1/01 G02F1/035

    CPC分类号: G02F1/0356 G02F1/0121

    摘要: An object of the present invention is to improve the modulation efficiency of an optical modulator in a high frequency band while satisfying the velocity matching condition. An optical modulator is provided having an optical waveguide for propagating light, an electrode for applying a voltage on the waveguide for modulating the light, a signal source electrically connected to the electrode and a terminating resistance electrically connected to the electrode. The signal source has a characteristic impedance Zi and the terminating resistance has an impedance Zl satisfying the formula (Zi

    摘要翻译: 本发明的一个目的是在满足速度匹配条件的同时提高高频带中光调制器的调制效率。 提供一种光调制器,其具有用于传播光的光波导,用于在波导上施加电压以调制光的电极,电连接到电极的信号源和电连接到电极的终端电阻。 信号源具有特性阻抗Zi,并且终端电阻具有满足公式(Zi

    BRANCHED OPTICAL WAVEGUIDE, OPTICAL WAVEGUIDE SUBSTRATE AND OPTICAL MODULATOR
    42.
    发明申请
    BRANCHED OPTICAL WAVEGUIDE, OPTICAL WAVEGUIDE SUBSTRATE AND OPTICAL MODULATOR 审中-公开
    分支光学波导,光波导基板和光学调制器

    公开(公告)号:US20110262071A1

    公开(公告)日:2011-10-27

    申请号:US13178964

    申请日:2011-07-08

    IPC分类号: G02F1/035 G02B6/125

    摘要: An optical waveguide is formed on a ferroelectric substrate having a thickness of 20 μm or less by diffusion of a dopant or ion exchange. The optical waveguide has a non-branched section 2a operating on single mode and a pair of branched sections branched from the non-branched section 2a. Each of the branched sections has a connecting part 7 extending from a branching end 10 and a multi mode propagating part 8 continuously formed from the connecting part 7. The multi mode propagating part 8 has a width “m” larger than a width “t” of the non-branched section. A width “p” of the connecting part increases from the non-branched section 2a toward the multi mode propagating part 8.

    摘要翻译: 通过掺杂剂或离子交换剂的扩散,在厚度为20μm以下的强电介质基板上形成光波导。 光波导具有在单模上工作的非分支部分2a和从非分支部分2a分支的一对分支部分。 每个分支部分具有从分支端10延伸的连接部分7和从连接部分7连续形成的多模传播部分8.多模传播部分8具有大于宽度“t”的宽度“m” 的非支化部分。 连接部的宽度“p”从非分支部2a向多模传播部8增大。

    Optical waveguide devices and travelling wave type optical modulators
    43.
    发明申请
    Optical waveguide devices and travelling wave type optical modulators 有权
    光波导器件和行波型光学调制器

    公开(公告)号:US20070147722A1

    公开(公告)日:2007-06-28

    申请号:US10568888

    申请日:2004-08-19

    IPC分类号: G02F1/035

    摘要: A device 4 has a substrate 5, an optical waveguide 2 and modulation electrodes 1A, 1B, 1C. The substrate 5 is made of an electro-optic material and has a thickness of ≦30 μm at least in a region where the modulation electrode applies an electric field. The device has a ridge generated when the optical waveguide is formed, and the ridge has a height H (angstrom) and a width “W” (μm) whose product (H×W) is 7150 angstrom·μm or smaller to realize single mode propagation of light in the optical waveguide. The waveguide has branched parts in the region where the modulation electrode applied an electric field. The deviation of positions of peaks and bottoms in the extinction ratio curve can be reduced, by increasing the distance of the branched parts of the optical waveguide to ≧46 μm.

    摘要翻译: 器件4具有衬底5,光波导2和调制电极1A,1B,1C。衬底5由电光材料制成,其厚度至少在<=30μm的至少在 调制电极施加电场。 该器件具有在形成光波导时产生的脊,脊的高度为H(埃),宽度“W”(母),其乘积(H×W)为7150埃或更小,以实现单模传播 在光波导中的光。 波导在调制电极施加电场的区域中具有分支部分。 通过将光波导的分支部分的距离增加到> =46μm,可以减少消光比曲线中的峰值和底部位置的偏差。

    Electrode systems for optical modulation and optical modulators
    44.
    发明授权
    Electrode systems for optical modulation and optical modulators 失效
    用于光学调制和光学调制器的电极系统

    公开(公告)号:US07218819B2

    公开(公告)日:2007-05-15

    申请号:US10740850

    申请日:2003-12-22

    IPC分类号: G02B6/26 G02F1/035

    摘要: An object of the invention is to provide an electrode system for optical modulation of an optical modulator to reduce a thickness “E” of an electrode required for velocity matching and for reducing a propagation loss in the electrode. A substrate 2 is made of an electrooptic material and has one and the other main faces 2a, 2b opposing each other. An electrode system 20A is provided on the substrate 2 for applying a voltage for modulating light propagating in optical waveguides 6A and 6B. The electrode system 20A includes ground electrodes 3A, 3B and a signal electrode 4. A ratio “W/G” of a width “W” of the signal electrode 4 to a gap “G” between the ground and signal electrodes is 0.8 or higher. Preferably, the substrate 2 has a thickness “T” of 20 μm or larger, in a region where the optical waveguides 6A and 6B are provided.

    摘要翻译: 本发明的目的是提供一种用于光学调制器的光学调制的电极系统,以减小速度匹配所需的电极的厚度“E”并减小电极中的传播损耗。 基板2由电光材料制成,并且具有彼此相对的一个和另一个主面2a,2b。 电极系统20A设置在基板2上,用于施加用于调制在光波导6A和6B中传播的光的电压。电极系统20A包括接地电极3A,3B和信号电极4。 信号电极4的宽度“W”与接地信号电极之间的间隙“G”的比“W / G”为0.8以上。 优选地,在设置有光波导6A和6B的区域中,基板2的厚度“T”为20μm以上。

    Optical waveguide device, and a travelling wave form optical modulator
    45.
    发明授权
    Optical waveguide device, and a travelling wave form optical modulator 有权
    光波导器件和行波形光调制器

    公开(公告)号:US07035485B2

    公开(公告)日:2006-04-25

    申请号:US10495340

    申请日:2002-11-15

    IPC分类号: G02F1/035

    摘要: An optical waveguide device 1 has an optical waveguide substrate 19, a supporting body 2 for supporting the substrate 19 and a joining layer 3 for joining the substrate 19 and the supporting body 2. The substrate 19 has a flat plate-shaped main body 4 made of an electro-optic material with a thickness of 30 μm or smaller and having first and second main faces 4a and 4b opposing each other, an optical waveguide provided on the side of the first main face 4a of the main body 4, and electrodes 7A to 7C provided on the side of the first main face 4a of the main body 4. The joining layer 3 joins the supporting body 2 at a joining face 4d and the second main face 4d of the main body 4. The joining face 2a of the supporting body 2 is substantially flat. Alternatively, the joining layer 3 has a thickness of 200 μm or lower.

    摘要翻译: 光波导装置1具有光波导基板19,支撑基板19的支撑体2和接合基板19和支撑体2的接合层3。 基板19具有平板状主体4,其由厚度为30μm以下的电光材料制成,并具有彼此相对的第一和第二主面4a和4b,设置在该侧面上的光波导 主体4的第一主面4a以及设置在主体4的第一主面4a一侧的电极7A〜7A。 接合层3在主体4的接合面4d和第二主面4d处接合支撑体2。 支撑体2的接合面2a基本上是平的。 或者,接合层3的厚度为200μm以下。

    Optical modulators and a method for modulating light
    46.
    发明授权
    Optical modulators and a method for modulating light 有权
    光调制器和调制光的方法

    公开(公告)号:US06904186B2

    公开(公告)日:2005-06-07

    申请号:US10291678

    申请日:2002-11-12

    IPC分类号: G02F1/01 G02F1/225 G02F1/035

    摘要: An optical modulator modulates light propagating in a three-dimensional optical waveguide 5 by applying a voltage on the waveguide. The modulator has a three dimensional optical waveguide 5 having at least a pair of branched portions 5b, 5c and a recombining portion 5f of the branched portions 5c, 5d and radiating light of off-mode, and a slab optical waveguide 4 guiding the light of off-mode. The modulator also has modulating electrodes 7A, 7B, 7C for applying a signal voltage and a direct current bias on the waveguide 5 to modulate light propagating in the waveguide 5. The modulator further has a photo detector 13 for detecting light radiated from the slab optical waveguide 4, and a controlling unit 15 for varying the direct current bias based on an output from the photo detector 13 so as to control the operational point of the modulator. According to the modulator, the operational point may be controlled with improved efficiency and stability.

    摘要翻译: 光调制器通过在波导上施加电压来调制在三维光波导5中传播的光。 调制器具有三维光波导5,其具有至少一对分支部分5b,5c和分支部分5c,5d的重合部分5f以及离散模式的辐射光,以及平板光波导 4引导关闭模式的灯。 调制器还具有用于在波导5上施加信号电压和直流偏压的调制电极7A,7B,7C,以调制在波导5中传播的光。 调制器还具有用于检测从平板光波导4辐射的光的光检测器13,以及用于根据光电检测器13的输出改变直流偏压的控制单元15,以便控制调制器的工作点。 根据调制器,可以以提高的效率和稳定性来控制操作点。

    Optical waveguide device and a travelling-wave optical modulator
    47.
    发明授权
    Optical waveguide device and a travelling-wave optical modulator 有权
    光波导器件和行波光调制器

    公开(公告)号:US06819851B2

    公开(公告)日:2004-11-16

    申请号:US10108250

    申请日:2002-03-27

    IPC分类号: G02F1035

    摘要: An optical waveguide device has an optical waveguide substrate and a supporting substrate. The optical waveguide substrate has a main body made of an electro-optic material and having a first main face and a second main face, an optical waveguide formed in or on the main body and an electrode formed on the side of the first main face of the main body. The supporting substrate is joined with the second main face of the main body. A low dielectric portion with a dielectric constant lower than that of the electro-optic material is formed in the supporting substrate.

    摘要翻译: 光波导器件具有光波导基板和支撑基板。 光波导基板具有由电光材料制成的主体,具有第一主面和第二主面,形成在主体中或其上的光波导和形成在主体的第一主面侧的电极 主体。 支撑基板与主体的第二主面接合。 在支撑衬底中形成介电常数低于电光材料的介电常数的低电介质部分。

    Optical device
    48.
    发明授权
    Optical device 有权
    光学装置

    公开(公告)号:US06961493B2

    公开(公告)日:2005-11-01

    申请号:US10123872

    申请日:2002-04-16

    摘要: An optical device consisting of a core layer, a first clad layer in contact with the core layer, a second clad layer, third clad layer and at least one electrode for applying a certain voltage or supplying a certain current. The second clad layer is deposited on the third clad layer and the core layer is provided between the first clad layer and the second clad layer. The core layer, first clad layer, second clad layer and third clad layer consist of a material with a negative refractive index variation coefficient, and the third clad layer has a refractive index smaller than that of the second clad layer.

    摘要翻译: 由芯层,与芯层接触的第一覆盖层,第二覆盖层,第三覆盖层和用于施加一定电压或提供一定电流的至少一个电极组成的光学器件。 第二覆层沉积在第三覆层上,芯层设置在第一覆层和第二覆层之间。 芯层,第一包层,第二包层和第三包层由具有负折射率变化系数的材料构成,第三包层的折射率小于第二包层的折射率。

    Optical device
    50.
    发明授权
    Optical device 失效
    光学装置

    公开(公告)号:US07184631B2

    公开(公告)日:2007-02-27

    申请号:US09948007

    申请日:2001-09-06

    IPC分类号: G02B6/42 G02B6/00

    摘要: An optical device includes an optical input waveguide, a branch/cross waveguide, an optical output waveguide and connection waveguides that connect the optical input and optical output waveguides to the cross/branch waveguide. The spot size of light propagating through the cross/branch waveguide is larger than the spot size of light propagating through optical input waveguides, the optical output waveguides, or the connection waveguides.

    摘要翻译: 光学装置包括光输入波导,分支/交叉波导,光输出波导和将光输入和光输出波导连接到交叉/分支波导的连接波导。 通过交叉/分支波导传播的光的光斑尺寸大于通过光输入波导,光输出波导或连接波导传播的光的光斑尺寸。