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公开(公告)号：US20170038609A1
公开(公告)日：2017-02-09
申请号：US14794457
申请日：2015-07-08
Applicant: ORACLE INTERNATIONAL CORPORATION
Inventor： Ying L. Luo , Shiyun Lin , Xuezhe Zheng , Ashok V. Krishnamoorthy
CPC classification number: G02F1/025 , G02F1/0123 , G02F1/2255 , G02F2001/0151 , G02F2001/212 , G02F2202/32
Abstract: An optical modulator is described. This optical modulator may be implemented using silicon-on-insulator (SOI) technology. In particular, a semiconductor layer in an SOI platform may include a photonic crystal having a group velocity of light that is less than that of the semiconductor layer. Moreover, an optical modulator (such as a Mach-Zehnder interferometer) may be implemented in the photonic crystal with a vertical junction in the semiconductor layer. During operation of the optical modulator, an input optical signal may be split into two different optical signals that feed two optical waveguides, and then subsequently combined into an output optical signal. Furthermore, during operation, time-varying bias voltages may be applied across the vertical junction in the optical modulator using contacts defined along a lateral direction of the optical modulator.
Abstract translation: 描述了光调制器。 该光调制器可以使用绝缘体上硅（SOI）技术来实现。 特别地，SOI平台中的半导体层可以包括具有小于半导体层的光的组光速的光子晶体。 此外，可以在半导体层中具有垂直结的光子晶体中实现光调制器（诸如马赫 - 曾德干涉仪）。 在光调制器的操作期间，输入光信号可以被分成两个不同的光信号，其馈送两个光波导，然后被组合成输出光信号。 此外，在操作期间，可以使用沿着光学调制器的横向方向限定的触点在光调制器中的垂直结上施加时变偏置电压。
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公开(公告)号：US09310562B2
公开(公告)日：2016-04-12
申请号：US14203876
申请日：2014-03-11
Applicant: Oracle International Corporation
Inventor： Xuezhe Zheng , Guoliang Li , Ying L. Luo , Ashok V. Krishnamoorthy
CPC classification number: G02B6/29341 , G02B6/2852 , G02F1/3132 , H04J14/00
Abstract: In an optical device, a ring resonator, having a resonance wavelength, optically couples an optical signal that includes a wavelength from an input optical waveguide to an output optical waveguide. A monitoring mechanism in the optical device, which is optically coupled to the output optical waveguide, monitors an output optical signal on the output optical waveguide. For example, the monitoring mechanism may dither a temperature of the ring resonator at a frequency using a heater, and the output optical signal may be monitored by determining amplitude and phase information of the output optical signal at the frequency and twice the frequency. Moreover, control logic in the optical device adjusts the resonance wavelength based on the monitored output optical signal, where the adjustment is made without monitoring an input optical signal on the input optical waveguide.
Abstract translation: 在光学装置中，具有谐振波长的环形谐振器将包括来自输入光波导的波长的光信号光耦合到输出光波导。 光学装置中的光耦合到输出光波导的监视机构监视输出光波导上的输出光信号。 例如，监视机构可以使用加热器将环形谐振器的温度以一定的频率进行抖动，并且可以通过确定频率和频率两倍的输出光信号的幅度和相位信息来监视输出光信号。 此外，光学装置中的控制逻辑基于所监视的输出光信号来调节谐振波长，其中在不监视输入光波导上的输入光信号的情况下进行调整。
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公开(公告)号：US20140268312A1
公开(公告)日：2014-09-18
申请号：US13831541
申请日：2013-03-14
Applicant: ORACLE INTERNATIONAL CORPORATION
Inventor： Xuezhe Zheng , Ashok V. Krishnamoorthy , Ivan Shubin , John E. Cunningham , Guoliang Li , Ying L. Luo
IPC: H01S5/14
CPC classification number: H01S5/1028 , H01S5/02252 , H01S5/1025 , H01S5/141 , H01S5/142 , H01S5/18 , H01S5/4087
Abstract: A hybrid optical source that provides an optical signal having a wavelength is described. This hybrid optical source includes an edge-coupled optical amplifier (such as a III-V semiconductor optical amplifier) aligned to a semiconductor reflector (such as an etched silicon mirror). The semiconductor reflector efficiently couples (i.e., with low optical loss) light out of the optical amplifier in a direction approximately perpendicular to a plane of the optical amplifier. A corresponding optical coupler (such as a diffraction grating or a mirror) fabricated on a silicon-on-insulator chip efficiently couples the light into a sub-micron silicon-on-insulator optical waveguide. The silicon-on-insulator optical waveguide couples the light to additional photonic elements (including a reflector) to complete the hybrid optical source.
Abstract translation: 描述了提供具有波长的光信号的混合光源。 该混合光源包括与半导体反射器（例如蚀刻硅镜）对准的边缘耦合光放大器（例如III-V半导体光放大器）。 半导体反射器在大致垂直于光放大器的平面的方向上有效地耦合（即，具有低光损耗）的光从光放大器中出射。 制造在绝缘体上硅芯片上的对应的光耦合器（例如衍射光栅或反射镜）有效地将光耦合到亚微米上绝缘体上的光波导中。 绝缘体上的光波导将光耦合到附加的光子元件（包括反射器）以完成混合光源。
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公开(公告)号：US09535308B2
公开(公告)日：2017-01-03
申请号：US14036964
申请日：2013-09-25
Applicant: Oracle International Corporation
Inventor： Guoliang Li , Ashok V. Krishnamoorthy , Xuezhe Zheng , Ying L. Luo , John E. Cunningham
CPC classification number: G02F1/2257 , G02B6/1225 , G02F2001/212 , G02F2202/32
Abstract: A photonic integrated circuit (PIC) is described. This PIC includes a semiconductor-barrier layer-semiconductor diode in an optical waveguide that conveys an optical signal, where the barrier layer is an oxide or a high-k material. Moreover, semiconductor layers in the semiconductor-barrier layer-semiconductor diode may include geometric features (such as a periodic pattern of holes or trenches) that create a lattice-shifted photonic crystal optical waveguide having a group velocity of light that is lower than the group velocity of light in the first semiconductor layer and the second semiconductor layer without the geometric features. The optical waveguide is included in an optical modulator, such as a Mach-Zehnder interferometer (MZI).
Abstract translation: 描述了一种光子集成电路（PIC）。 该PIC包括传输光信号的光波导中的半导体阻挡层 - 半导体二极管，其中阻挡层是氧化物或高k材料。 此外，半导体阻挡层 - 半导体二极管中的半导体层可以包括几何特征（例如空穴或沟槽的周期性图案），其产生具有低于组的光速的光子晶体光子晶体光波导 第一半导体层和第二半导体层中的光的速度没有几何特征。 光波导包括在诸如Mach-Zehnder干涉仪（MZI）的光学调制器中。
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公开(公告)号：US09519163B2
公开(公告)日：2016-12-13
申请号：US14034950
申请日：2013-09-24
Applicant: Oracle International Corporation
Inventor： Xuezhe Zheng , Jin Yao , Guoliang Li , Ying L. Luo , John E. Cunningham , Ashok V. Krishnamoorthy
CPC classification number: G02F1/025 , G02B6/124 , G02B6/24 , G02B6/29395 , G02F2001/0154 , G02F2201/302
Abstract: A photonic integrated circuit (PIC) is described. This PIC includes a grating coupler for surface-normal coupling that has an alternating pattern of grating teeth and grating trenches, where the grating trenches are filled with an electro-optical material. By applying an electric potential to the grating teeth, the index of refraction of the electro-optical material can be modified.
Abstract translation: 描述了一种光子集成电路（PIC）。 该PIC包括用于表面法线耦合的光栅耦合器，其具有光栅齿和光栅沟槽的交替图案，其中光栅沟槽用电光材料填充。 通过对光栅齿施加电位，可以改变电光材料的折射率。
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Patent Agency Ranking
公开(公告)号：US20140169737A1
公开(公告)日：2014-06-19
申请号：US13717359
申请日：2012-12-17
Applicant: ORACLE INTERNATIONAL CORPORATION
Inventor： Xuezhe Zheng , Ying L. Luo , Ashok V. Krishnamoorthy
IPC: G02B6/34
CPC classification number: G02B6/4215 , G02B6/12007 , G02B6/29308 , G02B6/2938 , G02B6/29395 , G02B2006/12107 , H04Q2213/1301
Abstract: An integrated optical component outputs and receives an optical signal that provides a comb of modulated wavelengths for use in wavelength-division-multiplexing (WDM) optical interconnects or links. In particular, a shared echelle grating is used as a wavelength-selective filter or control device for multiple lasing cavities to achieve self-registered and accurate lasing-channel spacing without inter-channel gain competition for multiplexing modulated wavelength channels into one transmit port, and for receiving and de-multiplexing WDM wavelength channels simultaneously. The wavelength alignment between a pair of such transceivers can be achieved by tuning the echelle grating on one side using thermal-optical or electro-optical effects. Furthermore, tunable ring-resonator modulators, broadband electro-absorption modulators (EAMs) or Mach-Zehnder Interferometer (MZI) optical modulators on the shared output waveguide outside of the lasing cavities can be used to modulate the wavelengths. The optical component can be used to provide all the wavelength channels in one optical waveguide.
Abstract translation: 集成光学部件输出并接收提供用于波分复用（WDM）光互连或链路的调制波长梳的光信号。 特别地，共享光圈光栅被用作用于多个激光腔的波长选择滤波器或控制装置，以实现自注册和精确的激光信道间隔，而不需要将调制波长信道复用到一个发射端口中的信道间增益竞争，以及 用于同时接收和解复用WDM波长信道。 一对这样的收发器之间的波长对准可以通过使用热光学或电光效应来调谐一侧的电子组件光栅来实现。 此外，可以使用在激光腔外部的共享输出波导上的可调谐环形谐振器调制器，宽带电吸收调制器（EAM）或马赫 - 曾德干涉仪（MZI）光调制器来调制波长。 光学部件可用于在一个光波导中提供所有波长通道。
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公开(公告)号：US20140166864A1
公开(公告)日：2014-06-19
申请号：US13717339
申请日：2012-12-17
Applicant: ORACLE INTERNATIONAL CORPORATION
Inventor： Xuezhe Zheng , Ying L. Luo , Ashok V. Krishnamoorthy
IPC: H01L31/16
CPC classification number: H01S5/141 , G02B6/29308 , G02B6/2931 , H01S5/026 , H01S5/0268 , H01S5/1092 , H01S5/4062 , H01S5/4087
Abstract: An integrated optical source is described. This optical source outputs one or more optical signals that provide a comb of wavelengths for use in wavelength-division-multiplexing (WDM) optical interconnects or links. In particular, a shared echelle grating is used as a wavelength-selective filter or control device for multiple lasing cavities to achieve self-registered and accurate lasing-channel spacing without inter-channel gain competition. Furthermore, the optical source can be used to provide all the wavelength channels in one optical waveguide or in separate optical waveguides. Therefore, the optical source may be used with cascaded ring-resonator modulators and/or electro-absorption-based broadband modulators.
Abstract translation: 描述了集成光源。 该光源输出提供用于波分复用（WDM）光互连或链路的波长梳的一个或多个光信号。 特别地，共享梯形光栅被用作用于多个激光腔的波长选择滤波器或控制装置，以实现自注册和精确的激光信道间隔，而不需要信道间增益竞争。 此外，光源可用于在一个光波导中或在单独的光波导中提供所有波长信道。 因此，光源可以与级联的环形谐振器调制器和/或基于电吸收的宽带调制器一起使用。
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公开(公告)号：US09638858B2
公开(公告)日：2017-05-02
申请号：US14451105
申请日：2014-08-04
Applicant: Oracle International Corporation
Inventor： Ying L. Luo , Xuezhe Zheng , Ashok V. Krishnamoorthy
CPC classification number: G02B6/124 , G02B6/1228 , G02B2006/12061 , G02B2006/12104 , G02B2006/12135 , H01S3/106 , H01S5/0612 , H01S5/141
Abstract: A hybrid optical source that provides an optical signal having a wavelength (or a narrow band of wavelengths) is described. This hybrid optical source includes an optical amplifier (such as a III-V semiconductor optical amplifier) that is butt-coupled or vertically coupled to a silicon-on-insulator (SOI) platform, and which outputs an optical signal. The SOI platform includes an optical waveguide that conveys the optical signal. A temperature-compensation element included in the optical waveguide compensates for temperature dependence of the indexes of refraction of the optical amplifier and the optical waveguide. In addition, a reflector, adjacent to the optical waveguide after the temperature-compensation element, reflects a portion of the optical signal and transmits another portion of the optical signal that has the wavelength.
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公开(公告)号：US20160204578A1
公开(公告)日：2016-07-14
申请号：US14062624
申请日：2013-10-24
Applicant: Oracle International Corporation
Inventor： Guoliang Li , Ashok V. Krishnamoorthy , Xuezhe Zheng , Ying L. Luo
CPC classification number: H01S5/142 , H01S5/021 , H01S5/0261 , H01S5/0265 , H01S5/0287 , H01S5/1032 , H01S5/12
Abstract: An optical source is described. This optical source includes a semiconductor optical amplifier, with a semiconductor other than silicon, which provides a gain medium. In addition, a photonic chip, optically coupled to the semiconductor optical amplifier, includes: an optical waveguide that conveys the optical signal; and a pair of ring-resonator modulators that modulate the optical signal. Furthermore, the pair of ring-resonator modulators is included within an optical cavity in the optical source. For example, the optical cavity may be defined by a reflective coating on one edge of the semiconductor optical amplifier and a reflector on one end of the optical waveguide. Alternatively, the optical cavity may be defined by reflectors on ends of the optical waveguide.
Abstract translation: 描述光源。 该光源包括具有提供增益介质的硅以外的半导体的半导体光放大器。 此外，光耦合到半导体光放大器的光子芯片包括：传送光信号的光波导; 以及一对调制光信号的环形谐振器调制器。 此外，一对环形谐振器调制器被包括在光源中的光腔内。 例如，光腔可以由半导体光放大器的一个边缘上的反射涂层和光波导的一端上的反射器来限定。 或者，光学腔可由光波导端部上的反射器限定。
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公开(公告)号：US20160170141A1
公开(公告)日：2016-06-16
申请号：US14451105
申请日：2014-08-04
Applicant: Oracle International Corporation
Inventor： Ying L. Luo , Xuezhe Zheng , Ashok V. Krishnamoorthy
CPC classification number: G02B6/124 , G02B6/1228 , G02B2006/12061 , G02B2006/12104 , G02B2006/12135 , H01S3/106 , H01S5/0612 , H01S5/141
Abstract: A hybrid optical source that provides an optical signal having a wavelength (or a narrow band of wavelengths) is described. This hybrid optical source includes an optical amplifier (such as a III-V semiconductor optical amplifier) that is butt-coupled or vertically coupled to a silicon-on-insulator (SOI) platform, and which outputs an optical signal. The SOI platform includes an optical waveguide that conveys the optical signal. A temperature-compensation element included in the optical waveguide compensates for temperature dependence of the indexes of refraction of the optical amplifier and the optical waveguide. In addition, a reflector, adjacent to the optical waveguide after the temperature-compensation element, reflects a portion of the optical signal and transmits another portion of the optical signal that has the wavelength.
Abstract translation: 描述了提供具有波长（或波长窄带）的光信号的混合光源。 该混合光源包括与绝缘体上硅（SOI）平台对接或垂直耦合并且输出光信号的光放大器（例如III-V半导体光放大器）。 SOI平台包括传送光信号的光波导。 包括在光波导中的温度补偿元件补偿光放大器和光波导的折射率的温度依赖性。 此外，在温度补偿元件之后与光波导相邻的反射器反射光信号的一部分并透射具有波长的光信号的另一部分。
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