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11. 发明授权

US4908833A Distributed feedback laser for frequency modulated communication systems 失效
标题翻译：用于调频通信系统的分布式反馈激光器
公开(公告)号：US4908833A
公开(公告)日：1990-03-13
申请号：US303594
申请日：1989-01-27
申请人： Andrew R. Chraplyvy , Thomas L. Koch , Robert W. Tkach
发明人： Andrew R. Chraplyvy , Thomas L. Koch , Robert W. Tkach
IPC分类号： H04B10/04 , H01S5/00 , H01S5/06 , H01S5/062 , H01S5/12 , H04B10/06 , H04B10/12 , H04B10/142 , H04B10/152
CPC分类号： H01S5/0622 , H01S5/12 , H01S5/0618 , H01S5/06209 , H01S5/124
摘要： To overcome the deleterious effects of the nonuniform frequency modulation response in semiconductor lasers due to current injection in direct frequency modulation applications, it has been determined that the linewidth enhancement factor .alpha. be made as large as possible. In one embodiment, distributed feedback lasers well suited for frequency modulation lightwave communication systems are designed to have an integrated feedback element such as a corrugation grating whose effective pitch is selected to cause the Bragg wavelength and, therefore, the laser operating wavelength to be longer than the wavelength at substantially the maximum gain or gain peak in the semiconductor structure without the grating. That is, the wavelength of the grating is effectively detuned toward the longer wavelength and lower energy side of the peak of the gain profile. Such detuning increases the linewidth enhancement factor in such a way that the nonuniform frequency modulation response and its effects are minimized and, in some cases, substantially eliminated.

12. 发明授权

US4725112A Buried undercut mesa-like waveguide 失效
标题翻译：埋藏的底切台面状波导
公开(公告)号：US4725112A
公开(公告)日：1988-02-16
申请号：US762968
申请日：1985-08-06
申请人： Thomas J. Bridges , Ernest G. Burkhardt , Larry A. Coldren , Thomas L. Koch
发明人： Thomas J. Bridges , Ernest G. Burkhardt , Larry A. Coldren , Thomas L. Koch
IPC分类号： G02B6/13 , H01L21/20 , H01S5/20 , H01S5/22 , H01S5/223 , H01S5/227 , H01S5/24 , G02B6/10
CPC分类号： H01S5/24 , G02B6/131 , H01S5/2081 , H01S5/22 , H01S5/2237 , H01S5/2275
摘要： Epitaxial regrowth by vapor phase epitaxy of controlled composition semiconductor material in and around undercut regions of a processed heterostructure wafer permits formation of a ridge waveguide capable of active or passive operation. Subsequent material selective and crystallographically preferential etching is employed to form mirror facets on each end of the ridge waveguide.
摘要翻译：通过处理的异质结构晶片的底切区域内和周围的受控组合物半导体材料的气相外延的外延再生可以形成能够进行主动或被动操作的脊形波导。采用随后的材料选择性和晶体学优先蚀刻，在脊波导的每一端形成镜面。

13. 发明申请

US20100303414A1 CHIP-BASED SLOT WAVEGUIDE SPONTANEOUS EMISSION LIGHT SOURCES 审中-公开
标题翻译：基于芯片的波峰波形自发发射光源
公开(公告)号：US20100303414A1
公开(公告)日：2010-12-02
申请号：US12799171
申请日：2010-04-20
申请人： Harry A. Atwater, JR. , Ryan M. Briggs , Mark L. Brongersma , Young Chul Jun , Thomas L. Koch , Ravi Sekhar Tummidi
发明人： Harry A. Atwater, JR. , Ryan M. Briggs , Mark L. Brongersma , Young Chul Jun , Thomas L. Koch , Ravi Sekhar Tummidi
IPC分类号： G02B6/30
CPC分类号： G02B6/12004
摘要： An optical device includes an optically emitting material producing spontaneous emission and an optical waveguide coupled to the optically emitting material. The spontaneous emission from the optically emitting material is emitted into at least one optical mode of the optical waveguide. The optical waveguide coupled to the optically emitting material does not provide optical gain, and the presence of the optical waveguide causes the spontaneous emission rate to be substantially more rapid than in the absence of the optical waveguide. The optical waveguide causes the more rapid spontaneous emission rate over a broad range of frequencies.
摘要翻译：光学装置包括产生自发发射的光学发射材料和耦合到光学发射材料的光波导。来自光学发射材料的自发发射被发射到光波导的至少一种光学模式。耦合到光发射材料的光波导不提供光学增益，并且光波导的存在导致自发发射速率比没有光波导的情况下快得多。光波导导致在宽频率范围内更快速的自发发射速率。

14. 发明授权

US06490044B1 Optimized interferometrically modulated array source 失效
公开(公告)号：US06490044B1
公开(公告)日：2002-12-03
申请号：US09154929
申请日：1998-09-17
申请人： Thomas L. Koch , Donald R. Scifres
发明人： Thomas L. Koch , Donald R. Scifres
IPC分类号： G02B2700
CPC分类号： H04B10/50575 , G02B6/12004 , G02B6/42 , G02B2006/12147 , H04B10/505 , H04B10/50572 , H04B10/54 , H04B10/548 , H04J14/02 , H04J14/0221
摘要： An improved interferometric modulator permits the reduction in size of optical transmitters. In one embodiment, the optical modulator includes amplifiers or attentuators as phase modulators. In another embodiment, two outputs from a combiner are fed to the modulator, thus avoiding the requirement for an input splitter in the modulator. Light passing through the modulator may be both phase-shifted and amplified or attenuated by optical regulator sections located in the modulator. In another embodiment, the transmitter is included as a multiple-wavelength optical communications source, where individual current sources are provided to actuate a number of light sources feeding into the combiner, a processor controls the operation of each light source, and a modulator driver receives a data input signal to be encoded on the output of the source. By combining a number of modulators, a gray scale modulator may be fabricated for producing a gray scale output, rather than a conventional binary level output.

15. 发明授权

US06359915B1 Wavelength-stabilized Bragg laser 有权
标题翻译：波长稳定的布拉格激光器
公开(公告)号：US06359915B1
公开(公告)日：2002-03-19
申请号：US09401901
申请日：1999-09-23
申请人： Thomas L. Koch , Xing Pan
发明人： Thomas L. Koch , Xing Pan
IPC分类号： H01S313
CPC分类号： H01S5/06256 , H01S5/065 , H01S5/0687
摘要： A stabilized single-longitudinal-mode laser where stabilization is performed through a pair of Bragg reflector mirrors slightly displaced in wavelength to either side of the longitudinal mode selected for operation. Transmitted signals through each Bragg reflector are detected and used in an electrical servo loop to control the relative positions of the longitudinal mode selected for operation and the peak wavelengths of the two Bragg reflector mirrors.
摘要翻译：稳定的单纵模式激光器，其中通过一对布拉格反射镜进行稳定化，该反射镜在波长选择为纵向模式的任一侧略微移动。通过每个布拉格反射器的传输信号被检测并用于电伺服环路中，以控制为操作选择的纵向模式和两个布拉格反射镜的峰值波长的相对位置。

16. 发明授权

US5288659A Photonic-integrated-circuit fabrication process 失效
标题翻译：光子集成电路制造工艺
公开(公告)号：US5288659A
公开(公告)日：1994-02-22
申请号：US944628
申请日：1992-09-14
申请人： Thomas L. Koch , Uziel Koren
发明人： Thomas L. Koch , Uziel Koren
IPC分类号： G02B6/12 , G02B6/124 , G02B6/136 , H01L21/8252 , H01L27/15 , H01S5/00 , H01S5/026 , H01S5/12 , H01L21/308 , H01S3/18
CPC分类号： H01S5/0264 , G02B6/124 , G02B6/136 , H01L21/8252 , H01S5/1231 , Y10S148/095 , Y10S148/106 , Y10S438/942
摘要： An improved process for fabricating photonic circuits is disclosed. The inventive process starts with a growth of a base wafer comprising a stack of epitaxial layers of various materials. At least a portion of each of the material layers will ultimately be a functioning part of any of a number of devices which will form the PIC or will serve a role in at least one of the fabrication processing steps. Specific inventive processing steps are addressed to (1) interconnecting passive waveguides, active devices, and grating filtering regions without the substantial optical discontinuities which appear in the prior art, and (2) etching continuous waveguide mesas to different depths in different regions of the PIC so as to optimize the performance of each PIC device.
摘要翻译：公开了一种用于制造光子电路的改进方法。本发明的方法从包含各种材料的外延层的堆叠的基底晶片的生长开始。每个材料层的至少一部分将最终将成为将形成PIC的多个装置中的任何一个的功能部分，或将在至少一个制造处理步骤中起作用。具体的本发明处理步骤涉及（1）互连无源波导，有源器件和光栅滤波区域，而不存在现有技术中出现的实质光学不连续性，以及（2）将连续的波导台面蚀刻到PIC的不同区域中的不同深度以便优化每个PIC设备的性能。

17. 发明授权

US5029297A Optical amplifier-photodetector device 失效
标题翻译：光放大器 - 光电检测器
公开(公告)号：US5029297A
公开(公告)日：1991-07-02
申请号：US421217
申请日：1989-10-13
申请人： Thirumala R. Halemane , Thomas L. Koch , Steven K. Korotky
发明人： Thirumala R. Halemane , Thomas L. Koch , Steven K. Korotky
IPC分类号： G01J1/02 , G02B5/18 , G02B6/12 , G02B6/30 , G02B6/34 , G02B6/42 , G02F1/35 , H01L31/10 , H01L33/00 , H01S5/00 , H01S5/026 , H01S5/50
CPC分类号： H01S5/50 , G02B6/12004 , G02B6/34 , G02B6/42 , H01S5/0264
摘要： The device here disclosed comprises an optical amplifier coupled to direct optical energy into a passive waveguide for transmission through the waveguide to its other end. A photodetector, positioned relative to the passive waveguide, detects the presence of optical energy in the passive waveguide. The photodetector in the structure illustrated is positioned downstream from the optical amplifier and spatially positioned with respect to the optical amplifier to receive optical energy only from the waveguide. The photodetector does not receive optical energy directly from the optical amplifier. A small fraction of the optical energy carried by the passive waveguide is received and detected by the photodetector.

18. 发明授权

US4764246A Buried undercut mesa-like waveguide and method of making same 失效
标题翻译：埋藏式底切台面状波导及其制作方法
公开(公告)号：US4764246A
公开(公告)日：1988-08-16
申请号：US87550
申请日：1987-08-20
申请人： Thomas J. Bridges , Ernest G. Burkhardt , Larry A. Coldren , Thomas L. Koch
发明人： Thomas J. Bridges , Ernest G. Burkhardt , Larry A. Coldren , Thomas L. Koch
IPC分类号： G02B6/13 , H01L21/20 , H01S5/20 , H01S5/22 , H01S5/223 , H01S5/227 , H01S5/24 , H01L21/306 , B44C1/22 , C03C15/00 , C03C25/06
CPC分类号： G02B6/131 , H01S5/24 , H01S5/2081 , H01S5/22 , H01S5/2237 , H01S5/2275
摘要： Epitaxial regrowth by vapor phase epitaxy of controlled composition semiconductor material in and around undercut regions of a processed heterostructure wafer permits formation of a ridge waveguide capable of active or passive operation. Subsequent material selective and crystallographically preferential etching is employed to form mirror facets on each end of the ridge waveguide.
摘要翻译：通过处理的异质结构晶片的底切区域内和周围的受控组合物半导体材料的气相外延的外延再生可以形成能够进行主动或被动操作的脊形波导。采用随后的材料选择性和晶体学优先蚀刻，以在脊波导的每一端形成镜面。

19. 发明申请

US20100091358A1 EXTRINSIC GAIN LASER AND OPTICAL AMPLIFICATION DEVICE 有权
标题翻译：超强增益激光和光放大器件
公开(公告)号：US20100091358A1
公开(公告)日：2010-04-15
申请号：US12611435
申请日：2009-11-03
申请人： Lionel C. Kimerling , Harry Atwater , Mark L. Brongersma , Luca Dal Negro , Thomas L. Koch , Philippe Fauchet , Michal Lipson , Jurgen Michel , Carlos Angulo Barrios
发明人： Lionel C. Kimerling , Harry Atwater , Mark L. Brongersma , Luca Dal Negro , Thomas L. Koch , Philippe Fauchet , Michal Lipson , Jurgen Michel , Carlos Angulo Barrios
IPC分类号： H01S3/00
CPC分类号： H01S3/0632 , H01S3/0637 , H01S3/083 , H01S3/09 , H01S3/1608 , H01S3/169 , H01S3/176 , H01S3/2308
摘要： An optical amplifier on a silicon platform includes a first doped device layer and a second doped device layer. A gain medium is positioned between the first and second doped device layers. The gain medium comprises extrinsic gain materials so as to substantially confine in the gain medium a light signal and allow the optical amplifier to be electrically or optically pumped.
摘要翻译：硅平台上的光放大器包括第一掺杂器件层和第二掺杂器件层。增益介质位于第一和第二掺杂器件层之间。增益介质包括外部增益材料，以便基本上将增益介质中的光信号限制在光电放大器中，并允许光放大器被电或光泵浦。

20. 发明授权

US06301272B1 Resonant pumped short cavity fiber laser with optical feedback stabilization 失效
标题翻译：具有光反馈稳定性的谐振泵浦短腔光纤激光器
公开(公告)号：US06301272B1
公开(公告)日：2001-10-09
申请号：US09505000
申请日：2000-02-15
申请人： Thomas L. Koch , Robert Waarts
发明人： Thomas L. Koch , Robert Waarts
IPC分类号： H01S330
CPC分类号： H01S3/0941 , H01S3/0675 , H01S3/08086 , H01S3/13 , H01S3/1608 , H01S3/1618 , H01S3/23 , H01S3/2383
摘要： A fiber laser or fiber amplifier uses resonant pumping of the gain medium by providing a pump resonator that establishes a resonator cavity at the pump wavelength which includes the pumped gain medium. The pump resonator may be of a distributed feedback (DFB) or a distributed Bragg reflector (DBR) type construction, and may be combined with signal reflection apparatus of either DFB or DBR type construction that provides oscillation of the desired laser output wavelength. If used without a signal reflection apparatus, the invention may be operated as a resonant pumped fiber amplifier. A resonant pumped laser may use a wavelength stabilized pump source to maximize pumping efficiency, the stabilization being provided by optical feedback.
摘要翻译：光纤激光器或光纤放大器通过提供在包括泵浦增益介质的泵浦波长处建立谐振器腔的泵谐振器来使用增益介质的谐振泵浦。泵谐振器可以是分布式反馈（DFB）或分布式布拉格反射器（DBR）型结构，并且可以与提供所需激光输出波长的振荡的DFB或DBR型结构的信号反射装置组合。如果在没有信号反射装置的情况下使用，本发明可以作为谐振泵浦光纤放大器来操作。谐振泵浦激光器可以使用波长稳定的泵浦源来最大化泵浦效率，由光学反馈提供稳定性。

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