公开(公告)号：US5694504A

公开(公告)日：1997-12-02

申请号：US612555

申请日：1996-03-08

Applicant: Jun Yu ,  George Horace Brook Thompson ,  Mark Acton Gibbon ,  David Owen Yevick ,  Claude Rolland

Inventor： Jun Yu ,  George Horace Brook Thompson ,  Mark Acton Gibbon ,  David Owen Yevick ,  Claude Rolland

IPC: G02F1/015 ,  G02F1/017 ,  G02F1/025 ,  G02F1/225 ,  G02B6/26

CPC classification number: B82Y20/00 ,  G02F1/2257 ,  G02F1/01708 ,  G02F2201/126 ,  G02F2203/20 ,  G02F2203/25 ,  G02F2203/255

Abstract: A MQW semiconductor Mach Zehnder phase modulator is formed by two Y-junctions (12, 32), each having a single waveguide (14) optically coupled with two branch waveguides (18, 20). The branch waveguides of the two Y-juntions are optically coupled in Mach-Zehnder configuration that, under zero bias conditions, has one interferometric arm longer than the other to provide a .pi. phase shift. The additional length is preferably accommodated in the branches of the Y-junctions. The phase shift, in combination with voltage dependent absorption properties and non-linear phase variations of the MQW guided regions in the Mach-Zehnder modulator results in a negative chirp and high extinction ratio for an equal, push-pull device configuration.

Abstract translation: MQW半导体马赫曾德尔相位调制器由两个Y形结（12,32）形成，每个Y结都具有与两个分支波导（18,20）光学耦合的单个波导（14）。 两个Y型臂的分支波导以马赫 - 曾德尔（Mach-Zehnder）结构光学耦合，在零偏置条件下，具有比另一个更长的干涉臂，以提供pi相移。 附加长度优选地容纳在Y形接头的分支中。 相位偏移与马赫 - 策德尔调制器中的MQW引导区域的电压相关吸收特性和非线性相位变化相结合，导致相等推挽装置配置的负啁啾和高消光比。

公开(公告)号：US5524076A

公开(公告)日：1996-06-04

申请号：US450841

申请日：1995-05-25

Applicant: Claude Rolland ,  John C. Cartledge

Inventor： Claude Rolland ,  John C. Cartledge

IPC: G02F1/017 ,  G02F1/225 ,  G02B6/10

CPC classification number: B82Y20/00 ,  G02F1/225 ,  G02F1/01708 ,  G02F1/2257 ,  G02F2201/126 ,  G02F2203/25 ,  G02F2203/255

Abstract: A Mach-Zehnder optical modulator in which the chirp parameter can be varied by adjusting the optical power splitting ratio between the two arms of the interferometer. The modulating voltage is supplied to a single arm or alternatively to both arms in a push-pull configuration. For an appropriate power splitting ratio negative chirp is achieved with approximately equal push-pull modulating drive voltage. This results in optimum distance and bit rate characteristics with low drive power.

Abstract translation: 通过调整干涉仪的两个臂之间的光功率分配比，可以改变啁啾参数的马赫 - 曾德尔光调制器。 调制电压以推挽配置提供给单个臂或替代双臂。 对于适当的功率分配比，通过大致相等的推挽调制驱动电压实现负啁啾。 这导致了具有低驱动功率的最佳距离和比特率特性。

公开(公告)号：US11906825B2

公开(公告)日：2024-02-20

申请号：US17060095

申请日：2020-10-01

Applicant: Drexel University

Inventor： Afshin S. Daryoush ,  Kai Wei

IPC: G02F1/29 ,  G02F1/035 ,  G02F1/065 ,  G02F1/295

CPC classification number: G02F1/0356 ,  G02F1/065 ,  G02F1/2955 ,  G02F2201/126 ,  G02F2201/127 ,  G02F2203/12

Abstract: Performance improvement of an all-optical analog-to-digital converter (AOADC) addresses both RF and optical modeling of a leaky waveguide based optical spatial light modulator (SLM) using electro-optic (E-O) material. The E-O polymer provides improved sensitivity for SLM and achieves a broader bandwidth due to better velocity matching between RF and optical waves.

公开(公告)号：US09846347B2

公开(公告)日：2017-12-19

申请号：US15459528

申请日：2017-03-15

Applicant: INPHI CORPORATION

Inventor： Masaki Kato

IPC: G02F1/225 ,  G02F1/025 ,  G02F1/21

CPC classification number: G02F1/2257 ,  G02F1/025 ,  G02F2001/212 ,  G02F2201/121 ,  G02F2201/126

Abstract: An apparatus for modulating a beam of light with balanced push-pull mechanism. The apparatus includes a first waveguide comprising a first PN junction on a silicon-on-insulator substrate and a second waveguide comprising a second PN junction on the silicon-on-insulator substrate. The second PN junction is a replica of the first PN junction shifted with a distance. The apparatus further includes a first source electrode and a first ground electrode coupled respectively with the first PN junction and a second source electrode and a second ground electrode coupled respectively with the second PN junction. The apparatus additionally includes a third ground electrode disposed near the second PN junction at the distance away from the second ground electrode, wherein the first ground electrode, the second ground electrode, and the third ground electrode are commonly grounded to have both PN junctions subjected to a substantially same electric field varied in ground-source-ground pattern.

公开(公告)号：US20170139237A1

公开(公告)日：2017-05-18

申请号：US15421300

申请日：2017-01-31

Applicant: Oracle International Corporation

Inventor： Ying Luo ,  Shiyun Lin ,  Ashok V. Krishnamoorthy ,  Jock T. Bovington ,  Xuezhe Zheng

IPC: G02F1/01 ,  H01S5/026 ,  H01S5/125 ,  H01S5/30 ,  H01S5/50

CPC classification number: G02F1/011 ,  G02F2201/126 ,  G02F2201/34 ,  G02F2203/15 ,  G02F2203/70 ,  H01S5/021 ,  H01S5/0261 ,  H01S5/0265 ,  H01S5/0287 ,  H01S5/1032 ,  H01S5/12 ,  H01S5/125 ,  H01S5/142 ,  H01S5/3013 ,  H01S5/50

Abstract: A dual-ring-modulated laser includes a gain medium having a reflective end coupled to a gain-medium reflector and an output end coupled to a reflector circuit to form a lasing cavity. This reflector circuit comprises: a first ring modulator; a second ring modulator; and a shared waveguide that optically couples the first and second ring modulators. The first and second ring modulators have resonance peaks, which are tuned to have an alignment separation from each other. During operation, the first and second ring modulators are driven in opposing directions based on the same electrical input signal, so the resonance peaks of the first and second ring modulators shift wavelengths in the opposing directions during modulation. The modulation shift for each of the resonance peaks equals the alignment separation, so the resonance peaks interchange positions during modulation to cancel out reflectivity changes in the lasing cavity caused by the modulation.

公开(公告)号：US09575339B2

公开(公告)日：2017-02-21

申请号：US14744544

申请日：2015-06-19

Applicant: International Business Machines Corporation

Inventor： Douglas M. Gill

IPC: G02F1/025 ,  G02F1/225 ,  H01L31/18 ,  G02F1/21

CPC classification number: G02F1/025 ,  G02F1/2255 ,  G02F1/2257 ,  G02F2001/212 ,  G02F2201/126 ,  H01L31/18

Abstract: A method of modulating an optical input with a radio frequency (RF) signal, an interdigitated modulator, and an electro-optical modulator including the interdigitated modulator are described. The method includes splitting the optical input to a first optical input and a second optical input, traversing a first region and a second region, respectively, with the first optical input and the second optical input, and modulating the first optical input with the RF signal in the first region. The method also includes controlling propagation speed of the RF signal in the first region, controlling RF line impedance in the first region, and controlling an optical loss of the first optical input in the first region.

公开(公告)号：US09571203B2

公开(公告)日：2017-02-14

申请号：US15063588

申请日：2016-03-08

Applicant: FUJITSU OPTICAL COMPONENTS LIMITED

Inventor： Masaki Sugiyama

IPC: G02F1/225 ,  H04B10/532 ,  H04J14/06 ,  G02F1/21

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

Abstract: An optical modulator includes a package 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: 一种光学调制器包括：容纳其中的第一基板和与第一基板不同的第二基板的封装，以及封装外部的柔性电路板。 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：US09372381B2

公开(公告)日：2016-06-21

申请号：US14057883

申请日：2013-10-18

Applicant: ACACIA COMMUNICATIONS INC.

Inventor： Diedrik Vermeulen ,  Long Chen ,  Christopher Doerr

IPC: G02F1/225

CPC classification number: G02F1/2257 ,  G02F1/225 ,  G02F2201/126

Abstract: Disclosed herein are methods, structures, and devices that compensates for modulator loss and modulation inefficiencies introduced by mask misalignments in opposite oriented pn type junction modulators. More specifically, Mach-Zehnder type optical modulators are disclosed wherein both arms in the MZI modulator are arranged in a push-pull configuration and configured to experience pn type junctions of two orientations wherein both arms further configured to experience the same length of waveguide with a pn type junction of each orientation.

Abstract translation: 本文公开了补偿由相对定向的pn型结型调制器中的掩模未对准引入的调制器损耗和调制低效率的方法，结构和装置。 更具体地，公开了马赫 - 曾德尔型光学调制器，其中MZI调制器中的两个臂被布置成推挽配置并被配置为经历两个取向的pn型结，其中两个臂进一步配置成经历相同长度的波导 每个方向的pn型结。

公开(公告)号：US20160164613A1

公开(公告)日：2016-06-09

申请号：US14960876

申请日：2015-12-07

Applicant: Commissariat a l'energie atomique et aux energies alternatives

Inventor： Sylvie MENEZO ,  Olivier DUBRAY

IPC: H04B10/516 ,  H04B10/54 ,  H04B10/556

CPC classification number: H04B10/5161 ,  G02F1/225 ,  G02F2001/0155 ,  G02F2201/126 ,  H04B10/5053 ,  H04B10/506 ,  H04B10/54 ,  H04B10/541 ,  H04B10/5561

Abstract: A photonic device for amplitude modulation of an optical signal, in which a source of the optical signal is coupled to an input waveguide separating through an optical splitter into two arms which recombine through an optical combiner in an output waveguide, wherein the arms are phase shifted by π/2 and each include an electro-optical amplitude modulator. The device may be adapted to modulate a wavelength multiplexed signal.

Abstract translation: 一种用于光信号幅度调制的光子器件，其中光信号源耦合到通过分光器分离成两个臂的输入波导，所述两个臂通过输出波导中的光组合器复合，其中所述臂是相移的 并且各自包括电光振幅调制器。 该装置可以适于调制波长多路复用信号。

公开(公告)号：US09128308B1

公开(公告)日：2015-09-08

申请号：US13770501

申请日：2013-02-19

Applicant: Sandia Corporation

Inventor： William A. Zortman ,  Anthony L. Lentine ,  Alexander H. Hsia ,  Michael R. Watts

IPC: G02F1/035 ,  G02F1/025

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

Abstract: Photonic modulators and methods of modulating an input optical signal are provided. A photonic modulator includes at least one modulator section and differential drive circuitry. The at least one modulator section includes a P-type layer and an N-type layer forming a PN junction in the modulator section. The differential drive circuitry is electrically coupled to the P-type layer and the N-type layer of the at least one modulator section.

Abstract translation: 提供光调制器和调制输入光信号的方法。 光调制器包括至少一个调制器部分和差分驱动电路。 所述至少一个调制器部分包括P型层和在调制器部分中形成PN结的N型层。 差分驱动电路电耦合到至少一个调制器部分的P型层和N型层。