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1. 发明授权

US07563628B2 Fabrication of optical waveguide devices 失效
标题翻译：光波导器件的制造
公开(公告)号：US07563628B2
公开(公告)日：2009-07-21
申请号：US11265931
申请日：2005-11-03
申请人： Thomas L. Koch , Robert M. Pafchek , Mark A. Webster
发明人： Thomas L. Koch , Robert M. Pafchek , Mark A. Webster
IPC分类号： H01L21/00
CPC分类号： G02B6/132 , G02B2006/121 , G02B2006/12173 , H01S3/063 , H01S3/1603 , H01S3/1628
摘要： Disclosed is a method of fabricating an optical waveguide device including the steps of forming a mask over a waveguide core material layer so as to leave a portion of the layer exposed, and exposing the structure to an oxidizing environment to form an oxide layer on the waveguide core material layer at least in the exposed portion thereby defining the lateral dimension of the waveguide core. The resulting waveguide core has extremely smooth surfaces for low optical losses.
摘要翻译：公开了一种制造光波导器件的方法，包括以下步骤：在波导核心材料层上形成掩模以使该部分暴露出来，并将该结构暴露于氧化环境以在波导上形成氧化物层芯材料层至少在暴露部分中，从而限定波导芯的横向尺寸。所得到的波导芯具有非常光滑的表面，用于低光损耗。

2. 发明申请

US20090015906A1 EXTRINSIC GAIN LASER AND OPTICAL AMPLIFICATION DEVICE 审中-公开
标题翻译：超强增益激光和光放大器件
公开(公告)号：US20090015906A1
公开(公告)日：2009-01-15
申请号：US11750596
申请日：2007-05-18
申请人： Lionel C. Kimerling , Harry Atwater , Mark L. Brongersma , Luca Dal Negro , Thomas L. Koch , Philippe Fauchet , Michal Lipson , Jurgen Michel
发明人： Lionel C. Kimerling , Harry Atwater , Mark L. Brongersma , Luca Dal Negro , Thomas L. Koch , Philippe Fauchet , Michal Lipson , Jurgen Michel
IPC分类号： H01S3/14
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。

3. 发明授权

US06295304B1 Resonant pumped short cavity fiber laser with multiple optical resonators 失效
标题翻译：具有多个光谐振器的谐振泵浦短腔光纤激光器
公开(公告)号：US06295304B1
公开(公告)日：2001-09-25
申请号：US09504510
申请日：2000-02-15
申请人： Thomas L. Koch , Stephen G. Grubb
发明人： Thomas L. Koch , Stephen G. Grubb
IPC分类号： H01S3067
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. Multiple resonators may also be pumped by a single pump source by locating each in a different branch of a multiple branch directional coupler. If the resonators are constructed to couple their outputs away from the coupler, a plurality of different laser outputs each having a different wavelength and equal output powers is provided. If the resonators couple their outputs toward the coupler, a plurality of discrete wavelengths each at the same power may be coupled onto a single waveguide. The pumping of the resonators may be from a single source the output of which is coupled into the single waveguide toward the directional coupler using a wavelength selective optical coupler that prevents optical energy outside the wavelength range of the pumping energy from reaching the pumping source.
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。多个谐振器也可以通过将单个泵浦源定位在多个分支定向耦合器的不同分支中来泵浦。如果谐振器被构造成将其输出耦合到耦合器，则提供多个具有不同波长和相等输出功率的不同激光输出。如果谐振器将其输出耦合到耦合器，则以相同功率的多个离散波长可以耦合到单个波导上。谐振器的泵浦可以来自单个源，其输出使用波长选择性光耦合器耦合到单向波导中，该波长选择光耦合器防止在泵浦能量的波长范围之外的光能量到达泵浦源。

4. 发明授权

US06186937B1 Method and device for obtaining a desired phase of optical characteristic of a fabry-perot etalon 有权
标题翻译：用于获得fabry-perot标准具的光学特性的期望相位的方法和装置
公开(公告)号：US06186937B1
公开(公告)日：2001-02-13
申请号：US09365085
申请日：1999-07-30
申请人： David A. Ackerman , Thomas L. Koch
发明人： David A. Ackerman , Thomas L. Koch
IPC分类号： G01B902
CPC分类号： G02B5/284
摘要： A method and device for obtaining a desired phase of optical characteristic of a Fabry-Perot (FP) etalon using multiple optical detectors which, while passively aligned at various positions relative to an incident light beam, detect different phases of light signal emerging from the FP etalon. An FP etalon and optical detector array constructed in accordance with the present invention may be used as a frequency discriminator in an optical system where the FP etalon optical characteristic is required to have a particular phase.
摘要翻译：一种使用多个光学检测器获得法布里 - 珀罗（FP）标准具的期望相位的期望相位的方法和装置，该光学检测器虽然被动地对准在相对入射光束的各个位置被动对准，但检测出从FP产生的光信号的不同相位标准具。根据本发明构造的FP标准具和光学检测器阵列可以用作需要具有特定相位的FP标准具光学特性的光学系统中的鉴频器。

5. 发明授权

US5299212A Article comprising a wavelength-stabilized semiconductor laser 失效
标题翻译：文章包括波长稳定的半导体激光器
公开(公告)号：US5299212A
公开(公告)日：1994-03-29
申请号：US28881
申请日：1993-03-10
申请人： Thomas L. Koch , Sheryl L. Woodward
发明人： Thomas L. Koch , Sheryl L. Woodward
IPC分类号： H04J14/00 , H01S5/00 , H01S5/024 , H01S5/0625 , H01S5/068 , H01S5/0683 , H01S5/0687 , H04B10/04 , H04B10/06 , H04B10/14 , H04J14/02 , H01S3/137 , H01S3/10 , H01S3/133
CPC分类号： H01S5/0687 , H01S5/02415 , H01S5/06256 , H01S5/06837
摘要： The disclosed article comprises a semiconductor laser (typically a multi-segment DBR laser) and feedback means for controlling the laser wavelength. The wavelength reference element in the feedback means advantageously is an optical fiber comprising an in-line refractive index grating. Such gratings frequently have a transmission spectrum that exhibits subsidiary lobes, in addition to the desired main lobe, potentially compromising the "cold-start" ability of prior art systems. This and other drawbacks of prior art systems exemplarily are overcome by apparatus that comprises a feedback loop that comprises means for causing a current I.sub.B to flow to the "Bragg" section of a multi-segment DBR laser such that wavelength of the laser output is a function of I.sub.B, and that further comprises means for changing the temperature of the laser in response to a change in the wavelength of the laser. Use of a wavelength reference element that has a relatively wide primary minimum facilitates cold starting. Exemplarily, the disclosed article is a wavelength division multiplexed (WDM) optical fiber communication system.
摘要翻译：所公开的文章包括半导体激光器（通常是多段DBR激光器）和用于控制激光波长的反馈装置。反馈装置中的波长参考元件有利地是包括直列折射率光栅的光纤。除了所需的主瓣之外，这种光栅经常具有展现副叶的透射光谱，潜在地危及现有技术系统的“冷启动”能力。示例性地，现有技术系统的这个和其它缺点被包括反馈回路的装置克服，该反馈回路包括用于使电流IB流向多段DBR激光器的“布拉格”部分的装置，使得激光输出的波长为 IB的功能，并且还包括用于响应于激光器的波长的变化来改变激光器的温度的装置。使用具有相对较宽的初级最小值的波长参考元件便于冷启动。示例性地，所公开的文章是波分复用（WDM）光纤通信系统。

6. 发明授权

US5253314A Tunable optical waveguide coupler 失效
标题翻译：可调光波导耦合器
公开(公告)号：US5253314A
公开(公告)日：1993-10-12
申请号：US830092
申请日：1992-01-31
申请人： Rodney C. Alferness , Lawrence L. Buhl , Thomas L. Koch , Uziel Koren
发明人： Rodney C. Alferness , Lawrence L. Buhl , Thomas L. Koch , Uziel Koren
IPC分类号： H01L31/12 , G02B6/12 , G02B6/122 , G02F1/313 , H01S5/00 , H01S5/026 , H01S5/0625 , H01S5/10 , H01S5/34 , G02B6/26
CPC分类号： H01S5/06256 , G02B6/12004 , G02B6/12007 , G02F1/3133 , G02F2001/3135 , G02F2203/055 , H01S5/1032 , H01S5/1035 , H01S5/3428
摘要： Various optical functions are generated in accordance with the present invention of a novel broadly tunable monolithic wavelength selective coupler which can be integrated with a gain medium to form a broadly tunable laser. The tunable wavelength selective coupler supports a pair of asynchronous waveguides, an upper waveguide and a lower waveguide, in combination with a phase match course grating for coupling optical energy between said waveguides. One end of the lower waveguide terminates at an output facet. The corresponding end of the upper waveguide terminates in an optical signal absorbing medium. The other end of the lower waveguide is terminated to prevent optical energy from entering the waveguide; and, the corresponding end of the upper waveguide terminates at an input facet. The combination of a gain section and the monolithically tunable wavelength selective coupler forms a broadly tunable laser which is an important source of optical energy for a number of applications such as wavelength division multiplexed networks and switching systems. The laser frequency is determined by that wavelength .lambda.o which satisifies the forward coupling phase match condition, .lambda.g=.LAMBDA..vertline.N.sub.2 -N.sub.1 .vertline. of the coupler where .LAMBDA. is the coarse grating period and N.sub.1, N.sub.2 are the effective indices of the two waveguides. Wavelengths which are not coupled from the upper waveguide to the lower waveguide are attenuated in the optical signal absorbing means. Tuning of the laser wavelength is achieved by either injecting current into or applying a reverse bias voltage to the upper waveguide to decrease or increase its index respectively and change the coupled wavelength.

7. 发明授权

US5220578A Long term mode stabilization for distributed Bragg reflector laser 失效
标题翻译：用于分布式BRAGG反射器激光器的长期模式稳定
公开(公告)号：US5220578A
公开(公告)日：1993-06-15
申请号：US786480
申请日：1991-11-01
申请人： Thomas L. Koch , Sheryl L. Woodward
发明人： Thomas L. Koch , Sheryl L. Woodward
IPC分类号： H01S5/042 , H01S5/026 , H01S5/0625 , H01S5/068 , H01S5/0687 , H04B10/155
CPC分类号： H01S5/0687 , H04B10/503 , H04B10/572 , H01S5/0264 , H01S5/06256
摘要： A light transmitter comprising a distributed Bragg reflector laser and mode stabilization feedback means is described for maintaining the laser in single longitudinal mode operation.

8. 发明授权

US6041070A Resonant pumped short cavity fiber laser 失效
标题翻译：谐振泵浦短腔光纤激光器
公开(公告)号：US6041070A
公开(公告)日：2000-03-21
申请号：US970745
申请日：1997-11-14
申请人： Thomas L. Koch , Robert Waarts
发明人： Thomas L. Koch , Robert Waarts
IPC分类号： H01S3/067 , H01S3/08 , H01S3/0941 , H01S3/13 , H01S3/16 , H01S3/23 , H01S3/07
CPC分类号： H01S3/0941 , H01S3/0675 , H01S3/13 , H01S3/08086 , 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. Resonant pumped lasers may be arranged in series to provide a laser apparatus with a selectable output wavelength. The different laser stages each provide resonance for a different pump wavelength, and each provide resonance for a different signal wavelength. Thus, a particular pump wavelength input to the series arrangement only resonates in one of the laser stages, and therefore only pumps the gain medium of that stage, allowing it to output its unique signal wavelength. The output signals from each laser stage may be coupled out of the series arrangement with wavelength selective optical couplers, each associated with a different laser stage.
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串联布置以提供具有可选输出波长的激光设备。不同的激光平台各自为不同的泵浦波长提供共振，并且各自为不同的信号波长提供谐振。因此，输入到串联装置的特定泵浦波长仅在一个激光级中共振，因此仅泵浦该级的增益介质，从而允许其输出其唯一的信号波长。来自每个激光级的输出信号可以与波长选择性光耦合器耦合在串联装置之外，每个与不同的激光级相关联。

9. 发明授权

US5243669A Asymmetric, periodically loaded waveguide for polarization rotation 失效
标题翻译：用于偏振旋转的不对称，周期性加载的波导
公开(公告)号：US5243669A
公开(公告)日：1993-09-07
申请号：US864739
申请日：1992-04-07
申请人： Rodney C. Alferness , Thomas L. Koch , Yosi Shani
发明人： Rodney C. Alferness , Thomas L. Koch , Yosi Shani
IPC分类号： G02B6/12 , G02B6/126 , G02F1/01 , G02F1/025 , G02F1/035
CPC分类号： G02F1/025 , G02B6/126 , G02F1/0353 , G02B2006/1204 , G02F2001/0142
摘要： Polarization rotation is achieved in an exemplary embodiment in an optical waveguide by augmenting the waveguide structure with a plurality of spaced-apart sections for loading the refractive index of the waveguide to cause a lateral asymmetry in the refractive index profile of the waveguide viewed in the plane transverse to the waveguide longitudinal axis. Each spaced-apart section induces non-zero coupling between the principal orthogonal polarization modes. Phase matched coupling between the principal orthogonal polarization modes is achieved by spacing the sections periodically by a distance .LAMBDA. equal to .lambda./.DELTA.N where .lambda. is the propagation wavelength in the waveguide and .DELTA.N is the difference between the effective refractive indices for the principal orthogonal polarization modes. Realizations of the waveguide structure are shown using Group III-V semiconductor rib waveguide structures.
摘要翻译：在光波导中的示例性实施例中通过用多个间隔开的部分来增加波导结构来实现极化旋转，以便加载波导的折射率以引起在平面中观察到的波导的折射率分布的横向不对称性横向波导纵向轴线。每个间隔开的部分在主正交偏振模式之间引起非零耦合。主要正交偏振模式之间的相位匹配耦合是通过间隔这些部分周期性地等于λ/ DELTA N的距离LAMBDA来实现的，其中λ是波导中的传播波长，并且DELTA N是主正交的有效折射率之间的差极化模式。使用III-V族半导体肋波导结构示出了波导结构的实现。

10. 发明授权

US5144637A Inline diplex lightwave transceiver 失效
标题翻译：在线DIPLEX LIGHTWAVE TRANSCEIVER
公开(公告)号：US5144637A
公开(公告)日：1992-09-01
申请号：US517103
申请日：1990-04-30
申请人： Thomas L. Koch , Herwig Kogelnik , Uziel Koren
发明人： Thomas L. Koch , Herwig Kogelnik , Uziel Koren
IPC分类号： H04B10/24 , G02B6/42 , H01L27/15 , H01S5/00 , H01S5/026
CPC分类号： H01L27/15 , G02B6/4246 , H01S5/0262
摘要： Full duplex lightwave communications is achieved in a diplex transceiver realized in a semiconductor photonic integrated circuit having an inline interconnecting waveguide integral with the transmitting and receiving portions of the transceiver. Semiconductor lasers and detectors operating in different wavelength regimes permit diplex or wavelength-division-multiplexed operation. In the transceiver, lightwave signals from the laser propagate through the detector without interfering with the detector operation or the lightwave signals being detected.
摘要翻译：在具有与收发器的发射和接收部分成一体的在线互连波导的半导体光子集成电路中实现的双工收发器中实现全双工光波通信。以不同波长方式工作的半导体激光器和检测器允许双重或波分复用操作。在收发器中，来自激光器的光波信号通过检测器传播，而不会干扰检测器操作或被检测到的光波信号。

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