公开(公告)号：US20050196091A1

公开(公告)日：2005-09-08

申请号：US11010823

申请日：2004-12-13

Applicant: Yee Lam ,  Hiroshi Nakamura ,  Yuen Chan

Inventor： Yee Lam ,  Hiroshi Nakamura ,  Yuen Chan

IPC: G02F1/015 ,  G02F1/017 ,  G02F1/01

CPC classification number: B82Y20/00 ,  G02F1/01708 ,  G02F2001/0157 ,  G02F2001/0175 ,  G02F2201/127

Abstract: According to the present invention, a travelling-wave electroabsorption modulator (TW-EAM) comprises: an optical waveguide with a plurality of adjacent regions electrically isolated from each other, the regions being characterized alternately by the properties of electroabsorption (EA) and optical transparency over the same range of optical wavelengths, and a microwave transmission line located above the optical waveguide, such that sections of the transmission line located above EA regions in the optical waveguide are in electrical contact with said EA regions, whereas sections of the transmission line located above transparent regions in the optical waveguide are electrically isolated from said transparent regions. In the absence of a microwave signal, the EA regions are substantially transparent to light in the optical waveguide. When a microwave signal is applied to the EA regions, they become substantially absorbing at the wavelength of the light in the optical waveguide. Thus, by applying a fast time-varying microwave signal to the transmission line, the absorption of light in the waveguide can be modulated temporally, thereby encoding information onto the light beam.

Abstract translation: 根据本发明，行波电吸收调制器（TW-EAM）包括：具有彼此电隔离的多个相邻区域的光波导，该区域由电吸收（EA）和光学透明性 在相同的光波长范围内，以及位于光波导上方的微波传输线，使得位于光波导中的EA区之上的传输线的部分与所述EA区电接触，而传输线的部分位于 光波导中的上述透明区域与所述透明区域电隔离。 在没有微波信号的情况下，EA区域对光波导中的光基本上是透明的。 当微波信号施加到EA区域时，它们在光波导中的光的波长处变得基本上被吸收。 因此，通过对传输线应用快速时变微波信号，可以暂时调制波导中的光的吸收，从而将信息编码到光束上。

公开(公告)号：US20050117829A1

公开(公告)日：2005-06-02

申请号：US10519204

申请日：2003-06-27

Applicant: William Chang ,  Paul Yu

Inventor： William Chang ,  Paul Yu

IPC: F28F1/12 ,  G02F1/017 ,  G02F1/01

CPC classification number: G02F1/01708 ,  B82Y20/00 ,  G02F2201/063 ,  G02F2201/127

Abstract: A method for optical modulation comprising the steps of guiding an optical wave in an optical waveguide, the optical wave having an evanescent tail; and applying a modulation voltage to the evanescent tail.

Abstract translation: 一种用于光学调制的方法，包括以下步骤：在光波导中引导光波，所述光波具有渐逝尾部; 并向渐逝尾部施加调制电压。

公开(公告)号：US20050018941A1

公开(公告)日：2005-01-27

申请号：US10724942

申请日：2003-12-01

Applicant: Christopher Coldren ,  Larry Coldren

Inventor： Christopher Coldren ,  Larry Coldren

IPC: G02F1/035 ,  G02F1/225 ,  G02F2/00 ,  G02F1/01

CPC classification number: H01L31/035236 ,  B82Y20/00 ,  G02F1/025 ,  G02F1/0356 ,  G02F1/2255 ,  G02F1/2257 ,  G02F2/004 ,  G02F2001/212 ,  G02F2002/008 ,  G02F2201/127 ,  H01L31/105 ,  H01S5/026 ,  H01S5/0262 ,  H01S5/0265 ,  H01S5/0427 ,  H01S5/06256 ,  H01S5/1209

Abstract: Traveling-wave optoelectronic wavelength conversion is provided by a monolithic optoelectronic integrated circuit that includes an interconnected traveling-wave photodetector and traveling-wave optical modulator with a widely tunable laser source. Either parallel and series connections between the photodetector and modulator may be used. An input signal modulated onto a first optical wavelength develops a traveling wave voltage on transmission line electrodes of the traveling-wave photodetector, and this voltage is coupled via an interconnecting transmission line of the same characteristic impedance to transmission line electrodes of the traveling-wave optical modulator to modulate the signal onto a second optical wavelength derived from the tunable laser. The traveling wave voltage is terminated in a load resistor having the same characteristic impedance as the photodetector and modulator transmission lines. However, the interconnecting transmission lines and the load resistor may have different impedances than the photodetector and modulator.

Abstract translation: 行波光电波长转换由单片光电集成电路提供，该集成电路包括具有广泛可调激光源的互连行波光电探测器和行波光调制器。 可以使用光电检测器和调制器之间的并联和串联连接。 调制到第一光波长的输入信号在行波光电检测器的传输线电极上产生行波电压，并且该电压通过相同特性阻抗的互连传输线耦合到行波光学器件的传输线电极 调制器将信号调制到从可调激光器得到的第二光波长上。 行波电压终止于具有与光电检测器和调制器传输线相同的特性阻抗的负载电阻器中。 然而，互连传输线路和负载电阻器可以具有与光电检测器和调制器不同的阻抗。

公开(公告)号：US20040001242A1

公开(公告)日：2004-01-01

申请号：US10459472

申请日：2003-06-12

Inventor： Junji Shigeta ,  Masataka Shirai ,  Shinji Tsuji ,  Hideo Arimoto

IPC: G02F001/01

CPC classification number: B82Y20/00 ,  G02F1/01708 ,  G02F1/0356 ,  G02F2001/0157 ,  G02F2201/127

Abstract: An optical modulator having a good reflection characteristic over a broad band is provided, with a small semiconductor chip area, by use of a semiconductor chip on which a semiconductor optical modulator is mounted. A typical example of the optical modulator has a structure in which a semiconductor chip provided with an electro-absorption semiconductor optical modulator comprising an electrode of traveling wave modulator is mounted on a dielectric substrate provided with a transmission line, and the characteristic impedance of at least a part of the transmission line is set to be greater than the output impedance of a modulator driver circuit and the impedance of an optical modulator portion. By this, a broad band optical modulator with excellent reflection characteristic can be provided by use of a semiconductor chip which is small in area.

Abstract translation: 通过使用其上安装有半导体光调制器的半导体芯片，提供了在宽带上具有良好反射特性的光调制器，具有小的半导体芯片面积。 光调制器的典型实例具有这样的结构，其中设置有包括行波调制器电极的电吸收半导体光调制器的半导体芯片安装在设置有传输线的电介质基板上，并且至少具有特征阻抗 传输线的一部分被设置为大于调制器驱动器电路的输出阻抗和光调制器部分的阻抗。 由此，可以通过使用面积小的半导体芯片来提供具有优异反射特性的宽带光调制器。

公开(公告)号：US20010007601A1

公开(公告)日：2001-07-12

申请号：US09738174

申请日：2000-12-15

Applicant: NGK Insulator, Ltd.

Inventor： Atsuo Kondo ,  Jungo Kondo ,  Kenji Aoki

IPC: G02F001/035

CPC classification number: G02F1/035 ,  G02F1/0356 ,  G02F1/225 ,  G02F1/2255 ,  G02F2001/212 ,  G02F2201/127

Abstract: A traveling wave optical modulator includes an optical waveguide substrate made of an electro-optic and ferrodielectric single crystal in the form of an X- or Y-orientation plate_and comprising a thicker portion having a larger thickness and a thinner portion having a smaller thickness; first and second branched optical waveguide portions formed at least on the thinner portion of the optical waveguide substrate; a set of electrodes provided on at least the thinner portion of the substrate and adapted for applying voltage to the first and second optical waveguide portions to modulate a light propagating the optical waveguide portions; and a buffer layer provided to cover a part of the optical waveguide portions at the thinner portion of the substrate, the electrodes crossing on the buffer layer.

Abstract translation: 行波光调制器包括由X-或Y取向板形式的电光和电介质单晶制成的光波导基片，并且包括具有较大厚度的较厚部分和较薄部分具有较小厚度; 至少形成在所述光波导基板的较薄部分上的第一和第二分支光波导部分; 设置在所述基板的至少较薄部分上的电极组，其适于向所述第一和第二光波导部分施加电压，以调制传播所述光波导部分的光; 以及缓冲层，其被设置为覆盖在所述基板的较薄部分处的所述光波导部分的一部分，所述电极在所述缓冲层上交叉。

公开(公告)号：US6111682A

公开(公告)日：2000-08-29

申请号：US158718

申请日：1998-09-22

Applicant: Makoto Minakata ,  Jungo Kondo ,  Takashi Yoshino ,  Minoru Imaeda

Inventor： Makoto Minakata ,  Jungo Kondo ,  Takashi Yoshino ,  Minoru Imaeda

IPC: G02F1/035 ,  G02F1/03

CPC classification number: G02F1/0356 ,  G02F2201/127

Abstract: A light modulator for modulating light upon application of a signal voltage, said light modulator including a substrate, an optical waveguide formed on a side of a front surface of the substrate, and first and secondary electrodes for applying the signal voltage to the light propagating through the optical waveguide, the first electrode being formed on a front surface side of the optical waveguide and including a main portion covering the front surface side of the optical waveguide and a first overhanging portion hanging over toward one side from the main portion.

Abstract translation: 一种用于在施加信号电压时调制光的光调制器，所述光调制器包括衬底，形成在衬底前表面侧的光波导，以及用于将信号电压施加到传播通过的光的第一和第二电极 所述光波导，所述第一电极形成在所述光波导的前表面侧，并且包括覆盖所述光波导的前表面侧的主要部分和从所述主体部向一侧悬垂的第一突出部。

公开(公告)号：US11705687B2

公开(公告)日：2023-07-18

申请号：US16859471

申请日：2020-04-27

Applicant: Honeywell International Inc.

Inventor： Matthew Wade Puckett ,  Neil A. Krueger ,  Steven Tin ,  Jeffrey James Kriz

IPC: G02F1/03 ,  H01S3/13 ,  G02F1/035 ,  G02F1/01

CPC classification number: H01S3/1307 ,  G02F1/035 ,  G02F1/0311 ,  G02F1/0316 ,  G02F1/0344 ,  G02F1/0147 ,  G02F2201/127 ,  G02F2201/16 ,  G02F2203/50

Abstract: An optical phase modulator comprises a cascaded array of optical resonators, wherein each of the optical resonators has an input port and an output port. A plurality of waveguides are coupled between the optical resonators and are configured to provide cascaded optical communication between the optical resonators. Each of the waveguides is respectively coupled between the output port of one optical resonator and the input port of an adjacent optical resonator. A transmission electrode is positioned adjacent to the optical resonators, with the transmission electrode configured to apply a drive voltage across the optical resonators. The optical phase modulator is operative to co-propagate an input optical wave with the drive voltage, such that a resonator-to-resonator optical delay is matched with a resonator-to-resonator electrical delay.

公开(公告)号：US10084545B2

公开(公告)日：2018-09-25

申请号：US15830351

申请日：2017-12-04

Applicant: Elenion Technologies, LLC

Inventor： Ran Ding ,  Thomas Wetteland Baehr-Jones ,  Michael J. Hochberg ,  Alexander Rylyakov

IPC: H04B10/04 ,  H04B10/556 ,  G02F1/025 ,  G02F1/01 ,  G02F1/225 ,  H04B10/54 ,  H04B10/516 ,  G02F1/21

CPC classification number: H04B10/5561 ,  G02F1/0123 ,  G02F1/025 ,  G02F1/2257 ,  G02F2001/212 ,  G02F2201/127 ,  H04B10/505 ,  H04B10/5161 ,  H04B10/541

Abstract: A distributed traveling-wave Mach-Zehnder modulator driver having a plurality of modulation stages that operate cooperatively (in-phase) to provide a signal suitable for use in a 100 Gb/s optical fiber transmitter at power levels that are compatible with conventional semiconductor devices and conventional semiconductor processing is described.

公开(公告)号：US10018888B2

公开(公告)日：2018-07-10

申请号：US13911550

申请日：2013-06-06

Applicant: EOSpace Inc.

Inventor： Suwat Thaniyavarn

IPC: G02F1/35 ,  G02F1/225 ,  G02F1/03 ,  G02F1/035 ,  G02F1/21

CPC classification number: G02F1/225 ,  G02F1/0316 ,  G02F1/0356 ,  G02F1/2255 ,  G02F2001/212 ,  G02F2201/127

Abstract: Improved optical interferometric modulators have a small waveguide spacing so that the waveguide pair are close to the central electrode, to enhance electro-optic interaction. Asymmetric waveguides with differential indices are used to effectively de-couple the waveguide pair. Multiple sections of asymmetric waveguide pairs with alternating differential indices are used to achieve chirp-free operation. Another version of the device utilizes transmission-line electrode that weave closer to one of the waveguide pair alternately between sections. Another version of the device utilizes waveguide structure that one of the waveguide is closer to the central electrode in alternate section. To improve efficiency further, a DC bias is provided on the outer electrodes configured as an RF-ground but DC-float electrodes. Another improvement is to have a slot is cut underneath the waveguide region to effectively reduce to thickness of the substrate. These improvements lead to higher modulator efficiency.

公开(公告)号：US20180143465A1

公开(公告)日：2018-05-24

申请号：US15821600

申请日：2017-11-22

Applicant: The Regents of the University of California

Inventor： Sung-Joo Ben Yoo ,  Chuan Qin ,  Burcu Ercan ,  Hongbo Lu

IPC: G02F1/035 ,  G02F1/03

CPC classification number: G02F1/0353 ,  G02F1/0327 ,  G02F2201/127 ,  G02F2203/07

Abstract: An optical device is described. This optical device includes an electro-optical material having an X-cut, Y-propagate orientation. In particular, a Y crystallographic direction of the electro-optical material is parallel to an optical waveguide defined in the electro-optic material and an X crystallographic direction of the electro-optical material is parallel to a vertical direction of the optical device. By applying drive signals having an angular frequency to the electo-optic material, the optical device may perform modulation, corresponding to a traveling-wave configuration, of an optical signal based at least in part on the drive signals. where the modulation involves a polarization conversion and a frequency shift. The angular frequency of the drive signals may be selected to approximately cancel electro-optic cross terms in X-Z plane of the electro-optical material. Moreover, an amplitude of the drive signals may be selected so that the optical device emulates a half-wave-plate configuration.