公开(公告)号：US09507237B2

公开(公告)日：2016-11-29

申请号：US14863275

申请日：2015-09-23

Applicant: FINISAR CORPORATION

Inventor： Gilles P. Denoyer

IPC: G02F1/035 ,  G02F1/225 ,  G02B6/14 ,  H04B10/556 ,  G02F1/21

CPC classification number: G02F1/2255 ,  G02B6/14 ,  G02F1/2257 ,  G02F2001/212 ,  G02F2201/126 ,  H04B10/556

Abstract: A differential TWE MZM includes a differential driver, first and second capacitors, and first and second terminations. The differential driver includes a first differential output and a second differential output that collectively form a differential pair. The first differential output is DC coupled to a cathode of a first arm optical phase shifter of a TWE MZM. The second differential output is DC coupled to a cathode of a second arm optical phase shifter of the TWE MZM. The first capacitor AC couples the second differential output to an anode of the first arm optical phase shifter. The second capacitor AC couples the first differential output to an anode of the second arm optical phase shifter. The first and second terminations are coupled to the cathode and the anode of, respectively, the first or second arm optical phase shifter.

Abstract translation: 差分TWE MZM包括差分驱动器，第一和第二电容器以及第一和第二终端。 差分驱动器包括共同形成差分对的第一差分输出和第二差分输出。 第一差分输出直流耦合到TWE MZM的第一臂光学移相器的阴极。 第二差分输出被直流耦合到TWE MZM的第二臂光学移相器的阴极。 第一电容器AC将第二差分输出耦合到第一臂光学移相器的阳极。 第二电容器AC将第一差分输出耦合到第二臂光学移相器的阳极。 第一和第二端子分别耦合到第一或第二臂光学移相器的阴极和阳极。

公开(公告)号：US09310663B2

公开(公告)日：2016-04-12

申请号：US14371954

申请日：2013-01-10

Applicant: FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V.

Inventor： Karl-Otto Velthaus

IPC: G02F1/035 ,  G02F1/225 ,  G02F1/25 ,  G02F1/01 ,  G02F1/21

CPC classification number: G02F1/225 ,  G02F1/0121 ,  G02F1/2255 ,  G02F1/2257 ,  G02F1/25 ,  G02F2001/212 ,  G02F2201/126

Abstract: A Mach-Zehnder modulator arrangement includes at least one electro-optic Mach-Zehnder modulator having a first optical waveguide forming a first modulator arm and a second optical waveguide forming a second modulator arm. A travelling wave electrode arrangement includes first waveguide electrodes for applying a voltage across the first optical waveguide and second waveguide electrodes for applying a voltage across the second optical waveguide. The first waveguide electrodes are capacitively coupled to the second waveguide electrodes. A driver unit supplies an alternating voltage to the travelling wave electrode arrangement. The driver unit includes a first output port coupled to the first waveguide electrodes and a second output port coupled to the second waveguide electrodes. The driver unit supplies a first varying signal to the first waveguide electrodes via the first output port and a second varying signal to the second waveguide electrodes via the second output port.

Abstract translation: 马赫 - 曾德尔调制器装置包括至少一个电光马赫曾德调制器，其具有形成第一调制器臂的第一光波导和形成第二调制器臂的第二光波导。 行波电极装置包括用于在第一光波导上施加电压的第一波导电极和用于在第二光波导上施加电压的第二波导电极。 第一波导电极电容耦合到第二波导电极。 驱动器单元向行波电极装置提供交流电压。 驱动器单元包括耦合到第一波导电极的第一输出端口和耦合到第二波导电极的第二输出端口。 驱动器单元经由第一输出端口向第一波导电极提供第一变化信号，并经由第二输出端口向第二波导电极提供第二变化信号。

公开(公告)号：US09298024B2

公开(公告)日：2016-03-29

申请号：US13709386

申请日：2012-12-10

Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.

Inventor： Shingo Yamanaka

IPC: G02F1/035 ,  G02F1/225

CPC classification number: G02F1/035 ,  G02F1/225 ,  G02F2201/126 ,  G02F2201/18

Abstract: A Mach-Zehnder (MZ) modulator made of semiconductor material and a method to drive the MZ-modulator are disclosed. The MZ-modulator includes a pair of arms to vary the phase of the optical beam propagating therein. One of the arms further provides the phase presetter that varies the phase of the optical beam by π. The arms are driven by modulation signals complementary to each other but with the DC bias equal to each other.

Abstract translation: 公开了一种由半导体材料制成的马赫 - 曾德（MZ）调制器和一种驱动MZ调制器的方法。 MZ调制器包括一对臂，以改变在其中传播的光束的相位。 其中一个臂进一步提供了通过＆pgr改变光束的相位的相位预调器。 臂由彼此互补的调制信号驱动，但是DC偏置彼此相等。

公开(公告)号：US09140957B2

公开(公告)日：2015-09-22

申请号：US14371978

申请日：2013-01-10

Applicant: FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V.

Inventor： Karl-Otto Velthaus

IPC: G02F1/035 ,  G02F1/225 ,  G02F1/25 ,  G02F1/01 ,  G02F1/21

CPC classification number: G02F1/2257 ,  G02F1/0121 ,  G02F1/225 ,  G02F1/2255 ,  G02F1/25 ,  G02F2001/212 ,  G02F2201/126

Abstract: An electro-optic Mach-Zehnder modulator arrangement includes first and second optical waveguides forming, respectively, first and second arms of the Mach-Zehnder modulator. An electrode arrangement includes a first waveguide electrode output port coupled to the first waveguide electrodes a second waveguide electrode arranged on top of a capacitive segment of the first and the second optical waveguides, respectively, such that a voltage can be applied across the capacitive segments of the first and second optical waveguide. At least one driver unit supplies a voltage to the electrode arrangement. The driver unit includes first and second output ports coupled, respectively, to the first and second waveguide electrodes. The driver unit supplies first and second varying signals to the first and second waveguide electrodes via the first and second output ports, respectively. A non-grounded conductive region connects the capacitive segments of the first and second optical waveguides to each other.

Abstract translation: 电光马赫曾德调制器装置包括分别形成马赫 - 曾德尔调制器的第一和第二臂的第一和第二光波导。 电极装置包括：第一波导电极输出端口，分别耦合到第一波导电极，第二波导电极分别布置在第一和第二光波导的电容段的顶部上，使得电压可以施加在电容段 第一和第二光波导。 至少一个驱动器单元向电极装置提供电压。 驱动器单元包括分别耦合到第一和第二波导电极的第一和第二输出端口。 驱动器单元分别经由第一和第二输出端口向第一和第二波导电极提供第一和第二变化信号。 非接地导电区域将第一和第二光波导的电容段彼此连接。

公开(公告)号：US20140185125A1

公开(公告)日：2014-07-03

申请号：US13733669

申请日：2013-01-03

Applicant: Gregory S. Kanter

Inventor： Gregory S. Kanter

IPC: G02F1/35

CPC classification number: G02F1/3517 ,  G02F1/21 ,  G02F7/00 ,  G02F2201/126 ,  H03M1/124

Abstract: An interferometer used for modulating an optical signal with an electrical signal is described, where the optical signal can be subsequently detected so as to sample and digitize the electrical signal. Nonlinear optical elements can be located inside the interferometer to reduce the minimum detectable electrical input signal size. The interferometer can contain more than two arms to improve the tolerable dynamic range of the electrical signal. In some cases some outputs of the interferometer are dependent on the electrical input frequency while others have minimal frequency dependence, thereby allowing the frequency of the input electrical signal to be measured more easily. Ideally the modulator operates in a push-pull mode with a single electrode for the input electrical signal. Such a modulator can be constructed by using appropriate optical delay elements.

Abstract translation: 描述了用于用电信号调制光信号的干涉仪，其中可以随后检测光信号以便对电信号进行采样和数字化。 非线性光学元件可以位于干涉仪内部，以减少最小可检测的电输入信号尺寸。 干涉仪可以包含两个以上的臂以改善电信号的可容许的动态范围。 在某些情况下，干涉仪的一些输出取决于电气输入频率，而其他输出频率的频率依赖性较小，从而可以更容易地测量输入电信号的频率。 理想地，调制器以推挽模式工作，具有用于输入电信号的单个电极。 这样的调制器可以通过使用适当的光学延迟元件来构造。

公开(公告)号：US20140119686A1

公开(公告)日：2014-05-01

申请号：US13970804

申请日：2013-08-20

Applicant: Fujitsu Optical Components Limited

Inventor： Masaki SUGIYAMA

IPC: G02F1/01

CPC classification number: H04B10/532 ,  G02F1/2255 ,  G02F2001/212 ,  G02F2201/126 ,  H04J14/06

Abstract: An optical modulator includes a package 2 that accommodates therein a first substrate and a second substrate different from the first substrate, and outside the package, a flexible circuit board. The first substrate has plural optical modulating units disposed thereon in parallel and each including a Mach-Zehnder optical waveguide. Plural first signal line paths corresponding to the optical modulating units are disposed on the second substrate. Plural second signal line paths corresponding to the optical modulating units are disposed on the flexible circuit board. Electrical lengths of the second signal line paths are different from one another. Electrical lengths of signal paths that span from input ends of the second signal line paths corresponding to the optical modulating units to base points on signal electrodes, via the first signal line paths, are equal to one another.

Abstract translation: 光调制器包括：容纳其中的第一基板和不同于第一基板的第二基板，以及在封装外部的柔性电路板的封装2。 第一基板平行配置有多个光调制单元，每一个包括马赫 - 策德尔光波导。 对应于光调制单元的多个第一信号线路径设置在第二基板上。 对应于光调制单元的多个第二信号线路径设置在柔性电路板上。 第二信号线路径的电长度彼此不同。 经由第一信号线路径跨越从与光调制单元对应的第二信号线路径到信号电极上的基点的信号路径的电长度彼此相等。

公开(公告)号：US20120106888A1

公开(公告)日：2012-05-03

申请号：US13381298

申请日：2010-07-09

Applicant: Takashi Goh ,  Yoshiyuki Doi ,  Shinji Mino ,  Ken Tsuzuki ,  Hiroshi Yamazaki ,  Takashi Yamada

Inventor： Takashi Goh ,  Yoshiyuki Doi ,  Shinji Mino ,  Ken Tsuzuki ,  Hiroshi Yamazaki ,  Takashi Yamada

IPC: G02F1/035

CPC classification number: G02F1/0327 ,  G02B2006/12142 ,  G02B2006/12159 ,  G02F1/225 ,  G02F2201/126 ,  G02F2203/20 ,  G02F2203/21

Abstract: In a nest MZI modulator in which each arm includes a child MZI, the power consumption is reduced. The hybrid integrated-type nest MZI modulator of the embodiment 1a is configured so that, instead of placing a relative phase adjusting section in a parent MZI, a bias electrode Bias 90° in which an electric field is applied in the same direction to the polarization direction in both of the upper and lower arms is placed in each child MZI (see FIG. 4B). The bias electrode Bias 90° provided in each child MZI constitute the entirety of a relative phase adjusting section. The optical signals are subjected to a phase change after the output from the child MZI (see FIG. 1A), because such relative phase adjusting section can subject the optical signals of the upper and lower arms of the child MZI to a shift change in the same direction, respectively.

Abstract translation: 在其中每个臂包括儿童MZI的巢MZI调制器中，功耗降低。 实施例1a的混合集成型嵌套MZI调制器被配置为使得不是将相对相位调整部分放置在母MZI中，而是将偏置电极偏置90°，其中向与极化相同的方向施加电场 将上臂和下臂两者的方向放置在每个子MZI中（参见图4B）。 每个子MZI中设置的偏置电极偏置90°构成相对相位调整部的整体。 在从子MZI（参见图1A）的输出之后，光信号经受相变，因为这种相对相位调整部分可以使子MZI的上臂和下臂的光信号在 相同方向。

公开(公告)号：US20090214151A1

公开(公告)日：2009-08-27

申请号：US12298199

申请日：2006-04-26

Applicant: David A. Keeling

Inventor： David A. Keeling

IPC: G02F1/295

CPC classification number: G02F1/3138 ,  G02F2001/212 ,  G02F2201/126 ,  G02F2202/105

Abstract: A high speed optical switch may include a plurality of pairs each having a length Lπ that may be connected in series. All switching may be accomplished in the high speed optical switch by discharging one arm in a pair (e.g. a single Lπ) at a time. Lπ may refer to a guide length used to induce a relative π phase shift. Each of the plurality of pairs may have two arms with both arms being initially charged. If both arms in any give pair have the same state, (e.g. either charged, uncharged, or charging) a ‘1’ may be transmitted through that pair. If the arms are in opposite states, (e.g. charged or uncharged) a π phase shift may be produced and a ‘0’ may be transmitted through that pair. For example, a first pair in the series may be recharged while other pairs are using in switching.

Abstract translation: 高速光学开关可以包括多个对，每对具有串联连接的长度Lpi。 所有的切换都可以在高速光学开关中通过一次放电一对（例如单个Lpi）来实现。 Lpi可以指用于诱导相对pi相移的引导长度。 多个对中的每一对可以具有两个臂，其中两个臂最初被充电。 如果任何给予对中的两个臂具有相同的状态，（例如，充电，不充电或充电）a'1'可以通过该对发送。 如果臂处于相反的状态（例如充电或不带电），则可能产生pi相移，并且可以通过该对传输“0”。 例如，串联中的第一对可以在其他对在切换中使用时被充电。

公开(公告)号：US20070292075A1

公开(公告)日：2007-12-20

申请号：US11810591

申请日：2007-06-06

Applicant: Robert Keith Montgomery ,  Margaret Ghiron ,  Prakash Gothoskar ,  Paulius Mindaugas Mosinskis ,  Vipulkumar Patel ,  Kalpendu Shastri ,  Mark Webster

Inventor： Robert Keith Montgomery ,  Margaret Ghiron ,  Prakash Gothoskar ,  Paulius Mindaugas Mosinskis ,  Vipulkumar Patel ,  Kalpendu Shastri ,  Mark Webster

IPC: G02B6/12

CPC classification number: G02F1/025 ,  G02F1/0147 ,  G02F1/225 ,  G02F2201/126

Abstract: A silicon-based optical modulator structure includes one or more separate localized heating elements for changing the refractive index of an associated portion of the structure and thereby providing corrective adjustments to address unwanted variations in device performance. Heating is provided by thermo-optic devices such as, for example, silicon-based resistors, silicide resistors, forward-biased PN junctions, and the like, where any of these structures may easily be incorporated with a silicon-based optical modulator. The application of a DC voltage to any of these structures will generate heat, which then transfers into the waveguiding area. The increase in local temperature of the waveguiding area will, in turn, increase the refractive index of the waveguiding in the area. Control of the applied DC voltage results in controlling the refractive index

Abstract translation: 基于硅的光学调制器结构包括一个或多个单独的局部加热元件，用于改变结构的相关部分的折射率，从而提供校正调整以解决器件性能的不期望的变化。 加热由诸如硅基电阻器，硅化物电阻器，正向偏置PN结等的热光器件提供，其中这些结构中的任何一种可以容易地与硅基光学调制器结合。 对这些结构中的任何一个施加直流电压将产生热量，然后传递到波导区域。 波导区域的局部温度的增加又将增加该区域中波导的折射率。 施加的直流电压的控制导致控制折射率

公开(公告)号：US07295784B2

公开(公告)日：2007-11-13

申请号：US10892890

申请日：2004-07-15

Applicant: Jin Soo Han ,  Youn Seon Jang ,  Hyun Jae Lee

Inventor： Jin Soo Han ,  Youn Seon Jang ,  Hyun Jae Lee

IPC: H04B10/04

CPC classification number: G02F1/225 ,  G02F1/0121 ,  G02F2001/212 ,  G02F2201/126

Abstract: The present invention relates to an apparatus and method for performing optical Differential Phase Shift Keying (DPSK) modulation, which transmits a phase difference between adjacent bits as information. The electrically band-limited optical DPSK modulating apparatus includes a light source, a Non-Return-to-Zero (NRZ) signal generator, a pre-coder, an electrical low pass filter, and a phase modulator. The NRZ signal generator generates a NRZ signal. The pre-coder codes the NRZ signal generated by the NRZ signal generator into a differential signal. The low pass “filter electrically limits a bandwidth of the differential signal obtained through the pre-coder. The phase modulator modulates an optical signal input from the light source into a DPSK signal using the differential signal having the bandwidth electrically limited by the low pass filter.

Abstract translation: 本发明涉及一种用于执行光差分相移键控（DPSK）调制的装置和方法，其将相邻位之间的相位差作为信息发送。 带电限制的光DPSK调制装置包括光源，非归零（NRZ）信号发生器，预编码器，电低通滤波器和相位调制器。 NRZ信号发生器产生NRZ信号。 预编码器将由NRZ信号发生器产生的NRZ信号编码成差分信号。 低通滤波器电气限制通过预编码器获得的差分信号的带宽，相位调制器使用具有由低通滤波器电气限制的带宽的差分信号，将从光源输入的光信号调制为DPSK信号 。