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    Semiconductor quantum well devices and methods of making the same
    3.
    发明授权
    Semiconductor quantum well devices and methods of making the same 有权
    半导体量子阱器件及其制作方法

    公开(公告)号：US07098471B2

    公开(公告)日：2006-08-29

    申请号：US10867037

    申请日：2004-06-14

    申请人： Tirumala R. Ranganath ,  Jintian Zhu

    发明人： Tirumala R. Ranganath ,  Jintian Zhu

    IPC分类号： H01L29/06 ,  H01L31/0328 ,  H01L31/0336 ,  H01L31/072 ,  H01L31/109

    CPC分类号： B82Y20/00 ,  H01L29/155 ,  H01S5/3403 ,  H01S5/3434

    摘要： Semiconductor quantum well devices and methods of making the same are described. In one aspect, a device includes a quantum well structure that includes semiconductor layers defining interleaved heavy-hole and light-hole valance band quantum wells. Each of the quantum wells includes a quantum well layer interposed between barrier layers. One of the semiconductor layers that functions as a barrier layer of one of the light-hole quantum wells also functions as the quantum well layer of one of the heavy-hole quantum wells. Another of the semiconductor layers that functions as a barrier layer of one of the heavy-hole quantum wells also functions as the quantum well layer of one of the light-hole quantum wells.

    摘要翻译： 描述了半导体量子阱器件及其制造方法。 在一个方面，一种器件包括量子阱结构，该量子阱结构包括限定交错的重孔和光空穴带隙量子阱的半导体层。 每个量子阱包括置于阻挡层之间的量子阱层。 作为其中一个光孔量子阱的阻挡层的半导体层之一也起到重孔量子阱之一的量子阱层的作用。 作为一个重孔量子阱的阻挡层的另一个半导体层也用作一个光孔量子阱的量子阱层。

    Parallel channel optical communication using modulator array and shared laser
    4.
    发明申请
    Parallel channel optical communication using modulator array and shared laser 有权
    使用调制器阵列和共享激光器的并行通道光通信

    公开(公告)号：US20080131141A1

    公开(公告)日：2008-06-05

    申请号：US11607236

    申请日：2006-11-30

    申请人： Tirumala R. Ranganath

    发明人： Tirumala R. Ranganath

    IPC分类号： H04B10/04

    CPC分类号： H04B10/5053 ,  H04B10/505

    摘要： An optical transmitter includes a drive laser, a 1×N splitter, and an array of modulators. The 1×N splitter is coupled to split a beam from the drive laser into separated beams, and the modulators modulate the respective beam to represent respective data signals that are transmitted in parallel. Embodiments of the transmitter can provide high data rate communications at low cost by eliminating the need for an array of isolators and eliminating the need for high quality AR coatings. Additionally, an integrated optical circuit containing the modulator array does not require an array of lasers and can be fabricated at higher yields and lower costs.

    摘要翻译： 光发射机包括驱动激光器，1xN分离器和调制器阵列。 1xN分离器被耦合以将来自驱动激光器的光束分成分离的光束，并且调制器调制相应的光束以表示并行传输的各个数据信号。 发射机的实施例可以通过消除对隔离器阵列的需要并消除对高质量AR涂层的需要，以低成本提供高数据速率通信。 此外，包含调制器阵列的集成光学电路不需要激光器阵列，并且可以以更高的产量和更低的成本制造。

    Parallel channel optical communication using modulator array and shared laser
    5.
    发明授权
    Parallel channel optical communication using modulator array and shared laser 有权
    使用调制器阵列和共享激光器的并行通道光通信

    公开(公告)号：US07734189B2

    公开(公告)日：2010-06-08

    申请号：US11607236

    申请日：2006-11-30

    申请人： Tirumala R. Ranganath

    发明人： Tirumala R. Ranganath

    IPC分类号： H04B10/04

    CPC分类号： H04B10/5053 ,  H04B10/505

    摘要： An optical transmitter includes a drive laser, a 1×N splitter, and an array of modulators. The 1×N splitter is coupled to split a beam from the drive laser into separated beams, and the modulators modulate the respective beam to represent respective data signals that are transmitted in parallel. Embodiments of the transmitter can provide high data rate communications at low cost by eliminating the need for an array of isolators and eliminating the need for high quality AR coatings. Additionally, an integrated optical circuit containing the modulator array does not require an array of lasers and can be fabricated at higher yields and lower costs.

    摘要翻译： 光发射机包括驱动激光器，1×N分路器和调制器阵列。 1×N分离器被耦合以将来自驱动激光器的光束分成分离的光束，并且调制器调制相应的光束以表示并行传输的相应数据信号。 发射机的实施例可以通过消除对隔离器阵列的需要并消除对高质量AR涂层的需要，以低成本提供高数据速率通信。 此外，包含调制器阵列的集成光学电路不需要激光器阵列，并且可以以更高的产量和更低的成本制造。

    Planar optical waveguide with alignment structure
    6.
    发明授权
    Planar optical waveguide with alignment structure 失效
    具有对准结构的平面光波导

    公开(公告)号：US06744953B2

    公开(公告)日：2004-06-01

    申请号：US09949395

    申请日：2001-09-07

    申请人： Brian Elliot Lemoff ,  William Gong ,  Richatd P. Tella ,  Tirumala R. Ranganath

    发明人： Brian Elliot Lemoff ,  William Gong ,  Richatd P. Tella ,  Tirumala R. Ranganath

    IPC分类号： G02B626

    CPC分类号： G02B6/4224 ,  G02B6/13 ,  G02B6/136 ,  G02B6/30

    摘要： Planar optical waveguide apparatus and methods for fabricating planar optical waveguide apparatus. The apparatus has a core layer and a cladding layer, the core layer having at least one optical waveguide, and an alignment structure spaced from and positioned with respect to the at least one optical waveguide to facilitate measuring a position of the at least one optical waveguide. The alignment structure has a first alignment structure, such as a reflecting member, to facilitate measuring a height of the at least one optical waveguide; and a second alignment structure, such as alignment marks, to facilitate measuring positions of the at least one optical waveguide in a plane of the at least one optical waveguide. The method includes forming both the optical waveguide and at least a portion of the alignment structure simultaneously in a single processing step to ensure that the optical waveguide and the alignment structure are in perfect registration.

    摘要翻译： 平面光波导装置及其制造平面光波导装置的方法。 所述装置具有芯层和包覆层，所述芯层具有至少一个光波导，以及与所述至少一个光波导隔开并相对于所述至少一个光波导定位的对准结构，以便于测量所述至少一个光波导的位置 。 对准结构具有诸如反射构件的第一对准结构，以便于测量至少一个光波导的高度; 以及诸如对准标记的第二对准结构，以便于在至少一个光波导的平面中测量至少一个光波导的位置。 该方法包括在单个处理步骤中同时形成光波导和对准结构的至少一部分，以确保光波导和对准结构完全配准。

    Multi-channel fabry-perot laser transmitters and methods of generating multiple modulated optical signals
    8.
    发明授权
    Multi-channel fabry-perot laser transmitters and methods of generating multiple modulated optical signals 失效
    多通道fabry-perot激光发射机和产生多个调制光信号的方法

    公开(公告)号：US07747174B2

    公开(公告)日：2010-06-29

    申请号：US10936057

    申请日：2004-09-08

    申请人： Tirumala R. Ranganath

    发明人： Tirumala R. Ranganath

    IPC分类号： H04B10/04

    CPC分类号： H04B10/506 ,  H04J14/02

    摘要： Multi-channel Fabry-Perot laser transmitters and methods of generating multiple modulated optical signals are described. In one aspect, an optical transmitter includes a Fabry-Perot (FP) laser, an optical isolator, an optical splitter, and multiple electroabsorption modulators (EAMs). The FP laser is operable to generate multimode laser light. The optical isolator is arranged to transmit the multimode laser light. The optical splitter has more than one optical output and an optical input that is arranged to receive the multimode laser light transmitted by the optical isolator. Each of the EAMs is operable to modulate a respective laser light output from a respective optical output of the optical splitter. In another aspect, multimode laser light is generated. The multimode laser light is directionally isolated. The directionally-isolated multimode laser light is divided into more than one divided laser light output. Each of the divided laser light outputs is modulated to produce multiple modulated optical signals.

    摘要翻译： 描述了多通道法布里 - 珀罗激光发射机和产生多个调制光信号的方法。 在一个方面，光发射机包括法布里 - 珀罗（FP）激光器，光隔离器，光分路器和多个电吸收调制器（EAM）。 FP激光器可操作以产生多模激光。 光隔离器布置成透射多模激光。 光分路器具有不止一个光输出和光输入端，该光输入端被布置成接收由光隔离器传输的多模激光。 每个EAM可操作以调制从光分路器的相应光输出端输出的相应激光。 另一方面，产生多模激光。 多模激光器是定向隔离的。 定向隔离多模激光被分为多个分开的激光输出。 每个分割的激光输出被调制以产生多个调制的光信号。

    Electroabsorption-modulated Fabry-Perot laser and methods of making the same
    9.
    发明授权
    Electroabsorption-modulated Fabry-Perot laser and methods of making the same 失效
    电吸收调制法布里 - 珀罗激光器及其制作方法

    公开(公告)号：US07502567B2

    公开(公告)日：2009-03-10

    申请号：US10867853

    申请日：2004-06-15

    申请人： Tirumala R. Ranganath

    发明人： Tirumala R. Ranganath

    IPC分类号： H04B10/04 ,  H01S3/10 ,  H01S3/13

    CPC分类号： H01S5/0265 ,  G02F2001/0159 ,  H04B10/505

    摘要： Electroabsorption-modulated Fabry-Perot lasers and methods of making the same are described. In one aspect, a light source includes a Fabry-Perot (FP) laser that is operable to generate multimode laser light, an electroabsorption modulator (EAM) that is configured to selectively absorb and transmit laser light traveling therethrough, and an optical isolator. The optical isolator is on an optical path between the FP laser and the EAM. The optical isolator is configured to transmit laser light traveling along the optical path from the FP laser to the EAM.

    摘要翻译： 描述了电吸收调制法布里 - 珀罗激光器及其制备方法。 在一个方面，光源包括可操作以产生多模激光的法布里 - 珀罗（FP）激光器，被配置为选择性地吸收和透射穿过其的激光的电吸收调制器（EAM）和光隔离器。 光隔离器位于FP激光器和EAM之间的光路上。 光隔离器被配置为发射沿着从FP激光器到EAM的光路行进的激光。

    Parametric diode amplifier
    10.
    发明授权
    Parametric diode amplifier 失效
    参数二极管放大器

    公开(公告)号：US4805237A

    公开(公告)日：1989-02-14

    申请号：US191729

    申请日：1988-05-10

    申请人： David K. Donald ,  Shih-Yuan Wang ,  Tirumala R. Ranganath ,  Steven A. Newton ,  William R. Trutna ,  David M. Bloom ,  Frank K. David

    发明人： David K. Donald ,  Shih-Yuan Wang ,  Tirumala R. Ranganath ,  Steven A. Newton ,  William R. Trutna ,  David M. Bloom ,  Frank K. David

    IPC分类号： H04B10/148 ,  H04B9/00

    CPC分类号： H04B10/60 ,  H04B10/64

    摘要： A parametric photodiode amplifier suitable for detecting light of frequency f and intensity P and having intersecting I:V curves for zero incident light and for incident light of intensity P. These photodiodes typically have an intrinsic density of carriers that is on the order of or less than the density of carriers produced by incident light of intensity P. When the photodiode is biased by an LO signal and is illuminated with modulated light of carrier frequency f, the photodiode output signal contains IF components at the difference between the frequencies of the modulation signal and the frequencies of on the order of the 23 lower harmonics of the LO signal.

    摘要翻译： 适用于检测频率f和强度P的光的参数光电二极管放大器，对于零入射光和强度为P的入射光具有相交的I：V曲线。这些光电二极管通常具有等于或小于 比由强度P的入射光产生的载流子的密度。当光电二极管被LO信号偏置并被载波频率f的调制光照射时，光电二极管输出信号包含调制信号的频率之间的差分的IF分量 以及LO信号的23个低次谐波的次数的频率。