公开(公告)号：US20020110302A1

公开(公告)日：2002-08-15

申请号：US09780567

申请日：2001-02-12

Applicant: Codeon Corporation

Inventor： Ganesh K. Gopalakrishnan

IPC: G02F001/035 ,  G02F001/01 ,  G02F001/295 ,  G02F001/03 ,  G02F001/07

CPC classification number: G02F1/2255 ,  G02F2201/12

Abstract: An external resonant optical modulator is provided by forming a waveguide electrode structure coupled to a coplanar strip or coplanar waveguide pattern including a ring resonator electrode and a ground electrode substantially surrounding the ring resonator electrode. These electrode patterns are disposed on an electrooptic substrate that includes an optical waveguide pattern. The waveguide electrode structure includes an RF feed line electrode coupled to the ring electrode. The RF feed line signal excites an inherent resonant mode of the ring to thereby cause an electric field to resonate between the ring electrode and ground electrode and pass into sections of the optical waveguide pattern. By appropriately positioning the ring and ground electrodes to overlay portions of the optical waveguide structure in the electrooptic substrate, a light beam launched into the waveguide pattern can be modulated to produce a pulse with zero chirp. The resonant modulator may be used in communication systems, such as a DWDM system, and may be formed as an individual device, or cascaded in series or parallel fashion with a plurality of optical modulators and other optical devices on a common electrooptic substrate.

Abstract translation: 通过形成耦合到共面带或共面波导图案的波导电极结构来提供外部谐振光学调制器，所述共面带或共面波导图案包括基本上围绕环形谐振器电极的环形谐振器电极和接地电极。 这些电极图案设置在包括光波导图案的电光基板上。 波导电极结构包括耦合到环形电极的RF馈线电极。 RF馈线信号激发环的固有谐振模式，从而使电场在环形电极和接地电极之间谐振并且进入光波导图案的部分。 通过适当地将环形电极和接地电极定位在电光学衬底中的光波导结构的重叠部分，可以调制发射到波导图案中的光束以产生具有零线性调频脉冲的脉冲。 谐振调制器可以用在诸如DWDM系统的通信系统中，并且可以形成为单独的设备，或者与普通电光基板上的多个光学调制器和其它光学器件串联或并联的方式形成。

公开(公告)号：US20020106141A1

公开(公告)日：2002-08-08

申请号：US09778841

申请日：2001-02-08

Applicant: Codeon Corporation

Inventor： Ganesh K. Gopalakrishnan

IPC: G02F001/035

CPC classification number: G02F1/0356

Abstract: An optical modulator device that substantially prevents coupling of a desired coplanar waveguide (CPW) electromagnetic wave mode with other spurious modes within non-active sections the modulator structure without significantly impacting the modulation efficiency in an active section of the device. The modulator includes an electrooptic substrate and a buffer layer that is formed on a surface of the electrooptic substrate. The buffer layer includes a thin portion that occupies an active section of the electrooptic substrate where modulation occurs, and a thicker portion that overlies the electrooptic substrate in one or more non-active sections of the device. The thinner portion of the buffer layer allows significant electrical-optical overlap of the CPW electromagnetic wave with an optical wave propagating within a waveguide formed in the active section of the device substrate. One or more thicker buffer layer portions on one or more non-active sections of the electrooptic substrate substantially prevent penetration of the CPW electromagnetic field into the electrooptic substrate in the non-active sections, and thus restrict coupling with undesirable modes the electrooptic substrate can support.

Abstract translation: 一种光调制器装置，其基本上防止了期望的共面波导（CPW）电磁波模式与非有效部分内的调制器结构中的其他寄生模式的耦合，而不会显着影响器件的有效部分中的调制效率。 调制器包括电光基板和形成在电光基板的表面上的缓冲层。 缓冲层包括占据电光基板的有源部分的薄部分，其中发生调制，以及在器件的一个或多个非有效部分中覆盖电光基板的较厚部分。 缓冲层的较薄部分允许CPW电磁波与在器件衬底的有源部分内形成的波导内传播的光波的显着电 - 光重叠。 电光学衬底的一个或多个非活性部分上的一个或多个较厚的缓冲层部分基本上防止CPW电磁场穿透到非活性部分中的电光基底中，从而限制电光基底能够支撑的不期望的模式的耦合 。

公开(公告)号：US20020109895A1

公开(公告)日：2002-08-15

申请号：US09781308

申请日：2001-02-13

Applicant: Codeon Corporation

Inventor： Ganesh K. Gopalakrishnan

IPC: G02B026/00 ,  G02F001/03 ,  G02F001/07

CPC classification number: G02F1/0356

Abstract: An optical device includes a grounded base and an optical modulator chip having a top surface, a back surface and side surfaces. The optical modulator chip includes a first ground electrode, a signal electrode and a second ground electrode located over the top surface of the optical modulator chip. A resistive paint is on the back surface of the optical modulator chip to reduce losses due to extraneous modes or bias instabilities.

Abstract translation: 光学装置包括接地基座和具有顶表面，后表面和侧表面的光调制器芯片。 光调制器芯片包括位于光调制器芯片顶表面上的第一接地电极，信号电极和第二接地电极。 电阻涂料在光调制器芯片的背面，以减少由于外来模式或偏置不稳定性造成的损失。

公开(公告)号：US20020105714A1

公开(公告)日：2002-08-08

申请号：US09778712

申请日：2001-02-08

Applicant: Codeon Corporation

Inventor： Ganesh K. Gopalakrishnan ,  Kevin G. Donovan ,  Richard C. Blanchard

IPC: G02F001/03 ,  G02F001/07

CPC classification number: G02F1/0316 ,  G02F1/0356

Abstract: An optical device includes a grounded base and an optical modulator chip having a top surface, a back surface and side surfaces. The optical modulator chip is positioned on the grounded base with the back surface facing the grounded base. The optical modulator chip includes a first ground electrode, a signal electrode and a second ground electrode located over the top surface of the optical modulator chip. The first and second ground electrodes of the optical modulator chip are interconnected on a surface of the optical modulator chip.

Abstract translation: 光学装置包括接地基座和具有顶表面，后表面和侧表面的光调制器芯片。 光调制器芯片位于接地底座上，后表面面向接地底座。 光调制器芯片包括位于光调制器芯片顶表面上的第一接地电极，信号电极和第二接地电极。 光调制器芯片的第一和第二接地电极在光调制器芯片的表面上互连。

公开(公告)号：US20020054417A1

公开(公告)日：2002-05-09

申请号：US09885136

申请日：2001-06-21

Applicant: Codeon Corporation

Inventor： Ganesh K. Gopalakrishnan ,  Kevin G. Donovan ,  Richard C. Blanchard

IPC: G02F001/03 ,  G02F001/07

CPC classification number: G02F1/0316 ,  G02F1/0356

Abstract: An optical device includes a grounded base and an optical modulator chip having a top surface, a back surface and side surfaces. The optical modulator chip is positioned on the grounded base with the back surface facing the grounded base. The optical modulator chip includes a first ground electrode, a signal electrode and a second ground electrode located over the top surface of the optical modulator chip. The first and second ground electrodes of the optical modulator chip are interconnected with resistive layers on a surface of the optical modulator chip.

Abstract translation: 光学装置包括接地基座和具有顶表面，后表面和侧表面的光调制器芯片。 光调制器芯片位于接地底座上，后表面面向接地底座。 光调制器芯片包括位于光调制器芯片顶表面上的第一接地电极，信号电极和第二接地电极。 光调制器芯片的第一和第二接地电极与光调制器芯片的表面上的电阻层互连。

公开(公告)号：US20030068111A1

公开(公告)日：2003-04-10

申请号：US09971643

申请日：2001-10-09

Applicant: CODEON CORPORATION

Inventor： Ganesh K. Gopalakrishnan

IPC: G02F001/035

CPC classification number: G02F1/0316 ,  G02F1/0121 ,  G02F1/225

Abstract: A programmable chirp optical modulator is provided having programs modes of chirp. The modulator includes an optical modulation chip substrate having an electrooptic property; a waveguide that runs across the optical modulation chip, wherein the waveguide includes a first main channel branching into separate parallel first and second waveguide arms that combine into a second main channel; a first coplanar-strip electrode overlying and running along the first waveguide arm; a second electrode overlying and running along the second waveguide arm; and at least one programmable electrode overlying the substrate and adjacent to the second electrode on a side of the second coplanar-strip electrode opposite a side of the second coplanar-strip electrode where the first coplanar-strip electrode is located. The at least one programmable electrode runs in parallel with the second electrode as the second electrode runs along the second waveguide arm.

Abstract translation: 提供了具有啁啾程序模式的可编程啁啾光学调制器。 调制器包括具有电光特性的光调制芯片基板; 横跨所述光调制芯片的波导，其中所述波导包括分支到分离的并联的第一和第二波导臂中的第一主通道，所述第一和第二波导臂组合成第二主通道; 第一共面条状电极，沿着第一波导臂重叠并延伸; 覆盖并沿第二波导臂行进的第二电极; 以及至少一个可编程电极，所述至少一个可编程电极在所述第二共面带电极的与所述第一共面带状电极的所述第一共面带电极的所述侧面相对的一侧上方覆盖所述衬底并且与所述第二电极相邻。 随着第二电极沿着第二波导臂行进，至少一个可编程电极与第二电极平行地延伸。

公开(公告)号：US20020089733A1

公开(公告)日：2002-07-11

申请号：US09757494

申请日：2001-01-11

Applicant: Codeon Corporation

Inventor： Ganesh K. Gopalakrishnan

IPC: G02F001/03 ,  G02F001/07

CPC classification number: H04B10/5053 ,  G02F1/0356 ,  G02F1/2255 ,  G02F2001/212 ,  G02F2201/18 ,  G02F2203/58 ,  H04B10/505 ,  H04J14/0298

Abstract: An optical modulation system for externally modulating two independent optical signals with first, second, third and fourth electrical input signals with two modulators. The system includes a first modulator with a first electrode receiving the first electrical input signal, a second electrode receiving the second electrical input signal, a first optical signal path co-propagating the first optical input signal with the first electrical signal and counter-propagating the second optical input signal to generate a first modulated optical signal, and a second optical signal path co-propagating the second optical input signal with the second electrical input signal and counter-propagating the first optical input signal to generate a second modulated optical signal. The second modulator includes a third electrode receiving the third electrical input signal, a fourth electrode receiving the fourth electrical input signal, a third optical signal path co-propagating the first optical input signal with the third electrical input signal and counter-propagating the second optical input signal to generate a third modulated optical signal, and a fourth optical signal path co-propagating the second optical input signal with the fourth electrical input signal and counter-propagating the first optical input signal to generate a fourth modulated optical signal.

Abstract translation: 一种用于利用具有两个调制器的第一，第二，第三和第四电输入信号外部调制两个独立光信号的光调制系统。 该系统包括第一调制器，其具有接收第一电输入信号的第一电极，接收第二电输入信号的第二电极，第一光信号路径与第一电信号共传播第一光输入信号并反向传播 第二光输入信号以产生第一调制光信号，第二光信号路径与第二电输入信号共同传播第二光输入信号，并反向传播第一光输入信号以产生第二调制光信号。 第二调制器包括接收第三电输入信号的第三电极，接收第四电输入信号的第四电极，与第三电输入信号共同传播第一光输入信号的第三光信号路径，并反向传播第二光输入信号 输入信号以产生第三调制光信号，第四光信号路径与第四电输入信号共同传播第二光输入信号，并对第一光输入信号进行反向传播以产生第四调制光信号。