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91. 发明授权

US09748738B2 Multiple-wavelength laser 有权
公开(公告)号：US09748738B2
公开(公告)日：2017-08-29
申请号：US14625971
申请日：2015-02-19
申请人： Oracle International Corporation
发明人： Ashok V. Krishnamoorthy , Xuezhe Zheng
IPC分类号： H01S3/083 , H01S5/10 , H04B10/50 , H01S5/068 , H01S5/00 , H01S5/028
CPC分类号： H01S5/1096 , H01S5/0078 , H01S5/0085 , H01S5/0287 , H01S5/06821 , H04B10/506
摘要： In a multiple-wavelength laser source, a multiple-mode laser outputs a set of wavelengths in a range of wavelengths onto an optical waveguide, where a spacing between adjacent wavelengths in the set of wavelengths is smaller than a width of channels in an optical link. Furthermore, a set of ring-resonator filters in the multiple-wavelength laser source, which are optically coupled to the optical waveguide, output corresponding subsets of the set of wavelengths for use in the optical link based on free spectral ranges and quality factors of the set of ring-resonator filters. These subsets may include one or more groups of wavelengths, with another spacing between adjacent groups of wavelengths that is larger than the width of the given channel in the optical link. In addition, the one or more groups of wavelengths may include one or more wavelengths, with the spacing between adjacent wavelengths in the given group of wavelengths.

92. 发明申请

US20170199098A1 INTEGRATED PHOTONIC-MIRROR TEST CIRCUIT 有权
公开(公告)号：US20170199098A1
公开(公告)日：2017-07-13
申请号：US14947061
申请日：2015-11-20
申请人： Oracle International Corporation
发明人： Jock T. Bovington , Xuezhe Zheng
IPC分类号： G01M11/00 , G02B6/125 , G02B6/26 , G02B6/42 , G02B6/293
CPC分类号： G01M11/005 , G02B6/125 , G02B6/26 , G02B6/2938 , G02B6/42 , G02B2006/12104
摘要： A reflectivity test circuit is described. The reflectivity test circuit includes a symmetric structure that cancels errors in the reflectivity measurements. In particular, the reflectivity test circuit includes an optical waveguide that is optically coupled to two optical ports and two optical couplers. The optical couplers are optically coupled to adjacent optical waveguides, at least one of which is optically coupled to a third optical port and the mirror. Moreover, a length of the optical waveguide is chosen to match the round-trip optical path length in at least the one of the adjacent optical waveguides. During operation, control logic determines the reflectivity of the mirror based at least on a ratio of an optical power measured on one of the two optical ports to an input optical power on the third optical port.

93. 发明申请

US20170139237A1 DUAL-RING-MODULATED LASER THAT USES PUSH-PULL MODULATION 有权
公开(公告)号：US20170139237A1
公开(公告)日：2017-05-18
申请号：US15421300
申请日：2017-01-31
申请人： Oracle International Corporation
发明人： Ying Luo , Shiyun Lin , Ashok V. Krishnamoorthy , Jock T. Bovington , Xuezhe Zheng
IPC分类号： G02F1/01 , H01S5/026 , H01S5/125 , H01S5/30 , H01S5/50
CPC分类号： 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
摘要： 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.

94. 发明授权

US09575251B1 Optical mode converter having multiple regions 有权
标题翻译：具有多个区域的光模式转换器
公开(公告)号：US09575251B1
公开(公告)日：2017-02-21
申请号：US14823954
申请日：2015-08-11
申请人： Oracle International Corporation
发明人： Jin-Hyoung Lee , Ivan Shubin , Xuezhe Zheng , Ashok V. Krishnamoorthy
IPC分类号： G02B6/12 , G02B6/14 , G02B6/122
CPC分类号： G02B6/14 , G02B6/1228
摘要： A standard-CMOS-process-compatible optical mode converter transitions an optical mode size using a series of adjacent regions having different optical mode sizes. In particular, in a partial-slab-mode region, which is adjacent to an initial rib-optical-waveguide-mode region, a width of a slab portion of the rib-type optical waveguide decreases and a width of a rib portion of the rib-type optical waveguide decreases to a first minimum tip size. Then, in a slab-mode region, which is adjacent to the partial-slab-mode region, the width of the slab portion decreases to a second minimum tip size. In addition, a dielectric layer is disposed over the slab portion, the rib portion and the BOX layer in the partial-slab-mode region, the slab portion and the BOX layer in the slab-mode region, and the BOX layer in a released-mode region that is adjacent to the slab-mode region and that does not include the semiconductor layer.
摘要翻译：标准CMOS工艺兼容光学模式转换器使用具有不同光学模式尺寸的一系列相邻区域来转换光学模式尺寸。特别地，在与初始肋 - 光波导模式区域相邻的局部平板模式区域中，肋型光波导的板坯部分的宽度减小，并且肋部分的肋部分的宽度肋型光波导减小到第一最小尖端尺寸。然后，在与部分板坯模式区域相邻的板坯模式区域中，板坯部分的宽度减小到第二最小端部尺寸。此外，介电层设置在部分平板模式区域中的板坯部分，肋部分和BOX层上，板模块区域中的板坯部分和BOX层，以及释放的BOX层模式区域，其与slab模式区域相邻并且不包括半导体层。

95. 发明申请

US20160334577A1 BACK-SIDE ETCHING AND CLEAVING OF SUBSTRATES 审中-公开
公开(公告)号：US20160334577A1
公开(公告)日：2016-11-17
申请号：US15223509
申请日：2016-07-29
申请人： Oracle International Corporation
发明人： Jin-Hyoung Lee , Ivan Shubin , Xuezhe Zheng , Ashok V. Krishnamoorthy
IPC分类号： G02B6/13 , G02B6/136 , G02B6/122 , H01L21/78 , H01L21/3065
CPC分类号： G02B6/13 , G02B6/122 , G02B6/136 , H01L21/3065 , H01L21/7806
摘要： A fabrication technique for cleaving a substrate in an integrated circuit is described. During this fabrication technique, a trench is defined on a back side of a substrate. For example, the trench may be defined using photoresist and/or a mask pattern on the back side of the substrate. The trench may extend from the back side to a depth less than a thickness of the substrate. Moreover, a buried-oxide layer and a semiconductor layer may be disposed on a front side of the substrate. In particular, the substrate may be included in a silicon-on-insulator technology. By applying a force proximate to the trench, the substrate may be cleaved to define a surface, such as an optical facet. This surface may have high optical quality and may extend across the substrate, the buried-oxide layer and the semiconductor layer.

96. 发明申请

US20160266320A1 OPTICAL REFLECTOR BASED ON A DIRECTIONAL COUPLER AND A COUPLED OPTICAL LOOP 有权
标题翻译：光学反射器基于方向耦合器和耦合光环
公开(公告)号：US20160266320A1
公开(公告)日：2016-09-15
申请号：US15163591
申请日：2016-05-24
申请人： Oracle International Corporation
发明人： Guoliang Li , Xuezhe Zheng , Ying L. Luo , Ashok V. Krishnamoorthy
IPC分类号： G02B6/293 , H01S5/50 , H01S5/20 , H01S5/30 , G02B6/12 , H01S5/14
CPC分类号： G02B6/29389 , G02B6/12007 , G02B6/125 , G02B6/293 , G02B6/29331 , G02B6/29335 , G02B6/29338 , G02B6/29343 , G02B6/29344 , G02B6/29352 , G02B6/29395 , G02F1/0147 , G02F1/225 , G02F1/2257 , G02F2001/212 , G02F2001/217 , H01S5/02252 , H01S5/0265 , H01S5/141 , H01S5/18 , H01S5/2027 , H01S5/3013 , H01S5/50
摘要： An optical device includes an optical reflector based on a coupled-loopback optical waveguide. In particular, an input port, an output port and an optical loop in arms of the optical reflector are optically coupled to a directional coupler. The directional coupler evanescently couples an optical signal between the arms. For example, the directional coupler may include: a multimode interference coupler and/or a Mach-Zehnder Interferometer (MZI). Moreover, destructive interference during the evanescent coupling determines the reflection and transmission power coefficients of the optical reflector.
摘要翻译：光学装置包括基于耦合回环光波导的光反射器。特别地，光反射器的臂中的输入端口，输出端口和光环路光耦合到定向耦合器。定向耦合器消失在臂之间耦合光信号。例如，定向耦合器可以包括：多模干涉耦合器和/或马赫 - 曾德干涉仪（MZI）。此外，ev逝耦合期间的破坏性干扰决定了光反射器的反射和发射功率系数。

97. 发明授权

US09442314B2 Ferroelectric-enhanced tuning of ring resonators by using fields parallel to and above a top surface thereof 有权
标题翻译：通过使用平行于其顶表面上方的场来对环形谐振器进行铁电增强调谐
公开(公告)号：US09442314B2
公开(公告)日：2016-09-13
申请号：US14457925
申请日：2014-08-12
申请人： Oracle International Corporation
发明人： John E. Cunningham , Xuezhe Zheng , Ashok V. Krishnamoorthy
IPC分类号： G02F1/225 , G02F1/025 , G02F1/05 , G02B6/12
CPC分类号： G02F1/025 , G02B2006/12047 , G02B2006/12061 , G02F1/0508 , G02F1/225
摘要： An integrated circuit is described. This integrated circuit includes a ferroelectric layer disposed on top of the ring resonator, which has a resonance wavelength. The ferroelectric layer is positioned between electrical contacts. Moreover, there may be amorphous semiconductor materials between the electrical contacts and the ferroelectric layer. For example, the amorphous semiconductor materials may include: p-type amorphous silicon and/or n-type amorphous silicon. By applying a reverse-bias voltage across the electrical contacts, an electric field is generated in a plane approximately parallel to a top surface of the ring resonator. This electric field electro-optically tunes the resonance wavelength. The ring resonator may operate at low voltage and can be integrated with a silicon optical waveguide on a silicon-on-insulator (SOI) platform.
摘要翻译：描述了集成电路。该集成电路包括设置在环形谐振器顶部的铁电层，其具有谐振波长。铁电层位于电触点之间。此外，在电触点和铁电层之间可能存在非晶半导体材料。例如，非晶半导体材料可以包括：p型非晶硅和/或n型非晶硅。通过在电触点上施加反向偏置电压，在大致平行于环形谐振器的顶表面的平面中产生电场。该电场电光调谐共振波长。环形谐振器可以在低电压下工作，并且可以与绝缘体上硅（SOI）平台上的硅光波导集成。

98. 发明申请

US20150362764A1 INTEGRATED ELECTRO-ABSORPTION MODULATOR 审中-公开
标题翻译：集成电吸收式调节器
公开(公告)号：US20150362764A1
公开(公告)日：2015-12-17
申请号：US14742431
申请日：2015-06-17
申请人： Oracle International Corporation
发明人： John E. Cunningham , Jin Yao , Ivan Shubin , Guoliang Li , Xuezhe Zheng , Shiyun Lin , Hiren D. Thacker , Stevan S. Djordjevic , Ashok V. Krishnamoorthy
IPC分类号： G02F1/025 , G02B6/12
CPC分类号： G02F1/025 , G02B6/12 , G02B2006/12107 , G02B2006/12142 , G02F1/0018 , G02F1/015 , G02F2001/0157 , H01L21/26513 , H01L31/02327 , Y02P70/521
摘要： An integrated optical device includes an electro-absorption modulator disposed on a top surface of an optical waveguide. The electro-absorption modulator includes germanium disposed in a cavity between an n-type doped silicon sidewall and a p-type doped silicon sidewall. By applying a voltage between the n-type doped silicon sidewall and the p-type doped silicon sidewall, an electric field can be generated in a plane of the optical waveguide, but perpendicular to a propagation direction of the optical signal. This electric field shifts a band gap of the germanium, thereby modulating the optical signal.
摘要翻译：集成光学器件包括设置在光波导的顶表面上的电吸收调制器。电吸收调制器包括设置在n型掺杂硅侧壁和p型掺杂硅侧壁之间的空腔中的锗。通过在n型掺杂硅侧壁和p型掺杂硅侧壁之间施加电压，可以在光波导的平面中产生电场，但是垂直于光信号的传播方向。该电场移动锗的带隙，从而调制光信号。

99. 发明申请

US20150280403A1 VERTICAL INTEGRATION OF A HYBRID OPTICAL SOURCE 有权
标题翻译：混合光源的垂直整合
公开(公告)号：US20150280403A1
公开(公告)日：2015-10-01
申请号：US14165132
申请日：2014-01-27
申请人： Oracle International Corporation
发明人： Shiyun Lin , Stevan S. Djordjevic , John E. Cunningham , Xuezhe Zheng , Ashok V. Krishnamoorthy
IPC分类号： H01S5/20 , H01S5/026 , H01S5/14
CPC分类号： H01S5/141 , H01S3/105 , H01S5/02252 , H01S5/026 , H01S5/1014 , H01S5/2018 , H01S5/4062 , H01S5/4087
摘要： A hybrid optical source includes a substrate with an optical amplifier (such as a III-V semiconductor optical amplifier). The substrate is coupled at an angle (such as an angle between 0 and 90°) to a silicon-on-insulator chip. In particular, the substrate may be optically coupled to the silicon-on-insulator chip by an optical coupler (such as a diffraction grating or a mirror) that efficiently couples (i.e., with low optical loss) an optical signal into a sub-micron silicon-on-insulator optical waveguide. Moreover, the silicon-on-insulator optical waveguide optically couples the light to a reflector to complete the hybrid optical source.
摘要翻译：混合光源包括具有光放大器（例如III-V半导体光放大器）的衬底。衬底以一个角度（例如0和90°之间的角度）耦合到绝缘体上硅芯片上。特别地，衬底可以通过光耦合器（例如衍射光栅或反射镜）光学耦合到绝缘体上硅芯片，该光耦合器（例如，具有低光损耗）将光信号有效地耦合到亚微米级绝缘体上硅光波导。此外，绝缘体上的光波导光将光耦合到反射器以完成混合光源。

100. 发明申请

US20150277053A1 WAVELENGTH-LOCKING A RING-RESONATOR FILTER 有权
标题翻译：波长锁定环形谐振器滤波器
公开(公告)号：US20150277053A1
公开(公告)日：2015-10-01
申请号：US14203876
申请日：2014-03-11
申请人： Oracle International Corporation
发明人： Xuezhe Zheng , Guoliang Li , Ying L. Luo , Ashok V. Krishnamoorthy
IPC分类号： G02B6/293
CPC分类号： G02B6/29341 , G02B6/2852 , G02F1/3132 , H04J14/00
摘要： 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.
摘要翻译：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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