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公开(公告)号：US20130195446A1
公开(公告)日：2013-08-01
申请号：US13361873
申请日：2012-01-30
申请人： Xuezhe Zheng , Ying Luo , Guoliang Li , Ashok V. Krishnamoorthy
发明人： Xuezhe Zheng , Ying Luo , Guoliang Li , Ashok V. Krishnamoorthy
CPC分类号： H04J14/02 , G02B6/29308 , H04B10/506 , H04B10/572
摘要： An optical source uses feedback to maintain a substantially fixed spacing between adjacent wavelengths in a set of wavelengths in a wavelength comb output by the optical source. In particular, a set of light sources in the optical source provide optical signals having the set of wavelengths. Moreover, the optical signals are output at diffraction angles of an optical device in the optical source (such as an echelle grating), and optical detectors in the optical source determine optical metrics associated with the optical signals. Furthermore, control logic in the optical source provides control signals to the set of light sources based on the determined optical metrics.
摘要翻译： 光源使用反馈来维持由光源输出的波长梳输出中的一组波长中的相邻波长之间的基本上固定的间隔。 特别地，光源中的一组光源提供具有该组波长的光信号。 此外，光信号以光源（例如梯形光栅）中的光学装置的衍射角输出，并且光源中的光学检测器确定与光信号相关联的光学度量。 此外，光源中的控制逻辑基于所确定的光学量度向光源组提供控制信号。
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公开(公告)号：US20130039661A1
公开(公告)日：2013-02-14
申请号：US13205879
申请日：2011-08-09
申请人： Ying Luo , Xuezhe Zheng , Guoliang Li , Kannan Raj , Ashok V. Krishnamoorthy
发明人： Ying Luo , Xuezhe Zheng , Guoliang Li , Kannan Raj , Ashok V. Krishnamoorthy
CPC分类号： H04J14/02 , G02B6/29308 , G02B6/2931
摘要： An optical de-multiplexer (de-MUX) that includes an optical device that images and diffracts an optical signal using a reflective geometry is described, where a free spectral range (FSR) of the optical device associated with a given diffraction order abuts FSRs associated with adjacent diffraction orders. Moreover, the channel spacings within diffraction orders and between adjacent diffraction orders are equal to the predefined channel spacing associated with the optical signal. As a consequence, the optical device has a comb-filter output spectrum, which reduces a tuning energy of the optical device by eliminating spectral gaps between diffraction orders of the optical device.
摘要翻译： 描述了包括使用反射几何形状对光信号进行成像和衍射的光学装置的光学去多路复用器（de-MUX），其中与给定衍射级相关联的光学装置的自由光谱范围（FSR）与相关联的FSR相邻 具有相邻衍射级。 此外，衍射级之间和相邻衍射级之间的沟道间隔等于与光信号相关联的预定通道间隔。 因此，光学器件具有梳状滤波器输出光谱，其通过消除光学器件的衍射级之间的光谱间隙来减少光学器件的调谐能量。
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公开(公告)号：US20130016744A1
公开(公告)日：2013-01-17
申请号：US13182243
申请日：2011-07-13
申请人： Guoliang Li , Xuezhe Zheng , Ashok V. Krishnamoorthy , Ying Luo
发明人： Guoliang Li , Xuezhe Zheng , Ashok V. Krishnamoorthy , Ying Luo
IPC分类号： H01S3/10
CPC分类号： H01S5/1039 , B82Y20/00 , H01S5/026 , H01S5/0261 , H01S5/1025 , H01S5/1032 , H01S5/142 , H01S5/3412 , H01S2301/163
摘要： A laser source includes an optical cavity having a length exceeding a first predefined distance (such as 6 mm), where a wavelength spacing between optical modes associated with the optical cavity is less than a second predefined distance (such as 100 pm). Moreover, a gain medium in the laser source amplifies the optical signal. Furthermore, tunable-grating waveguides in the laser source, which are optically coupled to ends of the optical cavity, reflect a portion of the optical signal back into the optical cavity, and at least one of the tunable-grating waveguides transmits a remainder of the optical signal out of the optical cavity.
摘要翻译： 激光源包括具有超过第一预定距离（例如6mm）的长度的光学腔，其中与光腔相关联的光学模式之间的波长间隔小于第二预定距离（例如100μm）。 此外，激光源中的增益介质放大光信号。 此外，光学耦合到光学腔的端部的激光源中的可调光栅波导将光信号的一部分反射回到光腔中，并且至少一个可调谐光栅波导将剩余的 光信号出光腔。
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公开(公告)号：US20110255823A1
公开(公告)日：2011-10-20
申请号：US12759964
申请日：2010-04-14
申请人： Guoliang Li , Jin Yao , Ashok V. Krishnamoorthy
发明人： Guoliang Li , Jin Yao , Ashok V. Krishnamoorthy
CPC分类号： G02B6/12007 , G02B6/12002 , G02B2006/12142 , G02F1/2257
摘要： An optical waveguide is described. This optical waveguide may be defined in a semiconductor layer, and may include a vertical slot that includes an electro-optic material having an electric-field-dependent index of refraction, and the electro-optic material may be other than a semiconductor in the semiconductor layer. Alternatively, the optical waveguide may include a vertical stack with two semiconductor layers that surround and partially overlap an intermediate layer, which includes the electro-optic material.
摘要翻译： 描述光波导。 该光波导可以限定在半导体层中，并且可以包括垂直狭缝，其包括具有电场依赖折射率的电光材料，并且电光材料可以不同于半导体中的半导体 层。 或者，光波导可以包括垂直堆叠，其具有围绕并部分重叠包括电光材料的中间层的两个半导体层。
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公开(公告)号：US20100247029A1
公开(公告)日：2010-09-30
申请号：US12415882
申请日：2009-03-31
IPC分类号： G02B6/12
CPC分类号： G02B6/12007 , G02B2006/12061 , G02F1/011 , G02F1/0147 , G02F2202/10
摘要： Embodiments of an optical device, an array of optical devices, and a technique for fabricating the optical device or the array are described. This optical device is implemented on a substrate (such as silicon), and includes a thermally tunable optical waveguide with a high thermal resistance to the surrounding external environment and a low thermal resistance to a localized heater. In particular, the thermal resistances associated with thermal dissipation paths from a heater in the optical device to an external environment via electrodes and via the substrate are increased, while the thermal resistance between the optical waveguide and the heater is decreased.
摘要翻译： 描述了光学器件，光学器件阵列以及用于制造光学器件或阵列的技术的实施例。 该光学器件实现在基板（例如硅）上，并且包括具有对周围外部环境的高耐热性和对局部加热器的低热阻的热可调谐光波导。 特别地，与通过电极和经由基板的从光学装置中的加热器到外部环境的热耗散路径相关联的热阻增加，同时光波导和加热器之间的热阻降低。
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26.发明授权Method and apparatus for pulse generation and adaptive pulse generation for optical communications 有权用于光通信的脉冲发生和自适应脉冲发生的方法和装置公开(公告)号：US07512338B2
公开(公告)日：2009-03-31
申请号：US11503456
申请日：2006-08-11
申请人： Isaac Shpantzer , Israel Smilanski , Jacob B. Khurgin , Vladimir Grigoryan , Pak Shing Cho , Nadejda Reingand , Guy Levy-Yurista , Guoliang Li
发明人： Isaac Shpantzer , Israel Smilanski , Jacob B. Khurgin , Vladimir Grigoryan , Pak Shing Cho , Nadejda Reingand , Guy Levy-Yurista , Guoliang Li
CPC分类号： H04B10/5053 , H04B10/25137 , H04B10/2543 , H04B10/505 , H04B10/5051 , H04B10/5057 , H04B10/50572 , H04B10/50577 , H04B10/508 , H04J14/02 , H04J14/08
摘要： One embodiment of the invention relates to producing optical pulses for use on a transmission link. A light source is configured to produce an optical signal. A pulse generator is coupled to the light source. The pulse generator is configured to receive, for a first channel, the optical signal and a clock signal. The pulse generator is also configured to modify the optical signal based on the clock signal to produce an optical pulse having a predetermined pulse shape. The clock signal is associated with the predetermined pulse shape. The predetermined pulse shape being based on a transmission characteristic of the transmission link.
摘要翻译： 本发明的一个实施例涉及产生用于传输链路的光脉冲。 光源被配置为产生光信号。 脉冲发生器耦合到光源。 脉冲发生器被配置为针对第一通道接收光信号和时钟信号。 脉冲发生器还被配置为基于时钟信号修改光信号以产生具有预定脉冲形状的光脉冲。 时钟信号与预定的脉冲形状相关联。 预定脉冲形状基于传输链路的传输特性。
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公开(公告)号：US10119857B2
公开(公告)日：2018-11-06
申请号：US13588248
申请日：2012-08-17
摘要： An integrated optical device includes a photo-detector (such as germanium) optically coupled to an optical waveguide. This photo-detector is deposited on the optical waveguide, and an optical signal propagating in the optical waveguide may be evanescently coupled to the photo-detector. In order to increase the absorption length of the photo-detector, a mirror (such as a distributed Bragg reflection grating) is included in the optical waveguide near the end of the photo-detector. This mirror reflects the optical signal back toward the photo-detector, thereby increasing the absorption of the optical signal by the photo-detector. In addition, absorption may be reduced by using electrical contacts that are electrically coupled to the photo-detector at locations where the optical mode of the optical signal is largely in the underlying optical waveguide, and by using a fingered metal layer to couple to the electrical contacts.
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公开(公告)号：US09176291B2
公开(公告)日：2015-11-03
申请号：US13588242
申请日：2012-08-17
CPC分类号： G02B6/4296 , G02B6/12004 , G02B6/1228 , G02B6/124 , G02B6/1347 , G02B6/34 , G02B2006/12188 , H01S5/02252 , H01S5/026 , H01S5/1014 , H01S5/1032 , H01S5/14 , H01S5/187
摘要： A photonic integrated circuit (PIC) that includes an optical source that provides an optical signal having a wavelength is described. This optical source includes a reflecting layer, a bottom cladding layer, an active layer (such as a III-V semiconductor) having a bandgap wavelength that exceeds that of silicon, and a top cladding layer. Moreover, an optical coupler (such as a grating coupler) that couples the optical signal out of a plane of the active layer is included in a region of the active layer. In this region, the top cladding layer is absent. Furthermore, in an adjacent region, the top cladding layer includes an inverse taper so that the top cladding layer is tapered down from a width distal from the region. In conjunction with the optical coupler, the inverse taper may facilitate low-loss optical coupling of the optical signal between the PIC and another PIC.
摘要翻译： 描述了包括提供具有波长的光信号的光源的光子集成电路（PIC）。 该光源包括反射层，底部包层，具有超过硅的带隙波长的有源层（例如III-V半导体）和顶部覆层。 此外，将有源层的平面耦合光信号的光耦合器（诸如光栅耦合器）包括在有源层的区域中。 在该区域中，顶层包层不存在。 此外，在相邻区域中，顶部包层具有倒锥形，使得顶部包层从远离该区域的宽度向下锥形。 结合光耦合器，逆锥度可以促进PIC和另一个PIC之间的光信号的低损耗光耦合。
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公开(公告)号：US08971674B2
公开(公告)日：2015-03-03
申请号：US12730774
申请日：2010-03-24
CPC分类号： G02B6/12007 , G02F1/0147 , G02F1/025 , G02F1/3132
摘要： An optical device with high thermal tuning efficiency is described. This optical device may be implemented using a tri-layer structure (silicon-on-insulator technology), including: a substrate, a buried-oxide layer and a semiconductor layer. In particular, a thermally tunable optical waveguide may be defined in the semiconductor layer. Furthermore, a portion of the substrate under the buried-oxide layer and substantially beneath a location of the thermally tunable optical waveguide is fabricated so that a portion of the buried-oxide layer is exposed. In this way, the thermal impedance between the thermally tunable optical waveguide and an external environment is increased, and power consumption associated with thermal tuning of the optical waveguide is reduced.
摘要翻译： 描述了具有高热调谐效率的光学装置。 该光学器件可以使用三层结构（绝缘体上硅技术）来实现，包括：衬底，掩埋氧化物层和半导体层。 特别地，热可调谐光波导可以限定在半导体层中。 此外，制造掩埋氧化物层下面的基板的一部分并且基本上位于热可调谐光波导的位置下方，使得一部分掩埋氧化物层露出。 以这种方式，热可调谐光波导和外部环境之间的热阻抗增加，并且降低与光波导的热调谐相关的功耗。
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公开(公告)号：US20140029940A1
公开(公告)日：2014-01-30
申请号：US13453930
申请日：2012-04-23
IPC分类号： H04B10/077
CPC分类号： H04B10/0775 , H01S5/0687 , H01S5/40 , H04B10/07955
摘要： An optical-source monitor images and diffracts received optical signals using an optical device that has a reflective geometry. For example, the optical device may include a diffraction grating on a curved surface, such as an echelle grating. By imaging and diffracting the optical signals, the optical device may couple to the optical signals on different diffraction orders of the optical device (which have different carrier wavelengths) from input optical waveguides to corresponding output optical waveguides. Then, output power monitors may measure the output power levels of the optical signals, and control logic may provide wavelength control signals to optical sources that provide the optical signals based on measured output power levels.
摘要翻译： 光源监视器使用具有反射几何形状的光学装置对接收到的光信号进行成像和衍射。 例如，光学装置可以包括弯曲表面上的衍射光栅，例如梯形光栅。 通过成像和衍射光学信号，光学器件可以将光学器件（其具有不同的载波波长）的不同衍射级与输入光波导耦合到相应的输出光波导上的光信号。 然后，输出功率监视器可以测量光信号的输出功率电平，并且控制逻辑可以向根据测量的输出功率电平提供光信号的光源提供波长控制信号。
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