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1. 发明授权

US5539759A Single mode laser with a passive antiguide region 失效
标题翻译：单模激光器具有被动反射区域
公开(公告)号：US5539759A
公开(公告)日：1996-07-23
申请号：US317393
申请日：1994-10-04
申请人： Constance J. Chang-Hasnain , Yongan Wu , Rashit Nabiev
发明人： Constance J. Chang-Hasnain , Yongan Wu , Rashit Nabiev
IPC分类号： H01S5/02 , H01S5/183 , H01S5/20 , H01S3/098
CPC分类号： H01S5/18355 , H01S2301/166 , H01S2301/18 , H01S5/0215 , H01S5/18352 , H01S5/205 , H01S5/222
摘要： A single mode laser with a laser cavity consisting of an active medium and a first and second reflectors with an antiguide region or layer having a high refractive index positioned adjacent to the laser cavity to bleed off higher order lasing modes and preventing them from attaining the lasing condition. Specifically, light belonging to higher order modes leaks or bleeds into the antiguide region from the laser medium and from the first and second reflectors. When spacers for selecting the desired wavelength of laser light are provided, the light travelling through them leaks into the antiguide layer as well.Optimization of the bleeding of higher order modes into the passive antiguide region can be achieved by adjusting a taper angle of the laser cavity. Furthermore, by adjusting the ratio of the equivalent refractive index of the laser cavity and the passive antiguide region single mode operation at high current levels can be realized for apertures as large as 30 .mu.m. In addition, such lasers exhibit a repeatable and predetermined direction of polarization, most commonly along the [011] crystal orientation of the laser medium.
摘要翻译：具有由活性介质和第一和第二反射器组成的激光腔的单模激光器，具有邻近激光腔定位的具有高折射率的防反射区域或层，以排出高阶激光模式并防止其达到激光条件。具体地说，属于高阶模式的光从激光介质和第一反射器和第二反射器泄漏或流入反射区域。当设置用于选择所需波长的激光的间隔物时，穿过它们的光也泄漏到防水层中。可以通过调整激光腔的锥角来实现高阶模式渗透到被动反射区域中的出血优化。此外，通过调整激光腔的等效折射率与被动防止区域单模操作在高电流水平下的比率可以实现为大至30μm的孔。此外，这种激光器表现出可重复和预定的偏振方向，最常见的是沿着激光介质的[011]晶体取向。

2. 发明授权

US6148268A Method for quality control and yield enhancement 失效
标题翻译：质量控制和产量提高的方法
公开(公告)号：US6148268A
公开(公告)日：2000-11-14
申请号：US88957
申请日：1998-06-02
申请人： Yongan Wu , Constance J. Chang-Hasnain
发明人： Yongan Wu , Constance J. Chang-Hasnain
IPC分类号： G06Q10/04 , G06F15/00
CPC分类号： G06Q10/04
摘要： An efficient method for optimization of product characteristics or manufacturing processes. The method utilized a Chi-square model to identify error sources that contribute to the product or process variability. The method is particularly useful for evaluation of processes related to optics and electronics fabrication but also has application in fields where a chi-square distribution is observed.
摘要翻译：用于优化产品特性或制造工艺的有效方法。该方法利用卡方模型来识别有助于产品或过程变异性的误差源。该方法对于与光学和电子制造相关的过程的评估特别有用，但也可用于观察到卡方分布的领域。

3. 发明授权

US5627852A Semiconductor laser geometry for broad-angle far-field addressing 失效
标题翻译：用于广角远场寻址的半导体激光几何
公开(公告)号：US5627852A
公开(公告)日：1997-05-06
申请号：US515859
申请日：1995-08-16
申请人： Yan Sun , Daniel A. Francis , Stephen A. Biellak , Constance J. Chang-Hasnain
发明人： Yan Sun , Daniel A. Francis , Stephen A. Biellak , Constance J. Chang-Hasnain
IPC分类号： H01S5/40 , H01S3/19 , H01S3/08
CPC分类号： H01S5/4031 , H01S5/4056 , H01S5/4075
摘要： A semiconductor laser apparatus for broad-angle far-field addressing is disclosed. The apparatus comprises a laser block with lasing cavities. The lasing cavity mirrors are made by dry-etching of the semiconductor block. The width of a lasing cavity is defined by a p contact pad on the laser block; further lateral confinement of current to the cavity is achieved by proton implantation followed by etching of the proton layer. The apparatus achieves quasi-continuous beam steering with a total steering angle of 80.degree. and with 11 resolvable spots.
摘要翻译：公开了一种用于广角远场寻址的半导体激光装置。该装置包括具有激光腔的激光块。激光腔镜由半导体块的干法蚀刻制成。激光腔的宽度由激光器块上的p接触焊盘限定; 通过质子注入然后蚀刻质子层来实现电流进入空腔的另外的侧向约束。该装置实现了准转弯角度为80°的准连续光束转向和11个可分辨点。

4. 发明授权

US5029176A Monolithic multiple-wavelength laser array 失效
标题翻译：单片多波长激光阵列
公开(公告)号：US5029176A
公开(公告)日：1991-07-02
申请号：US522226
申请日：1990-05-11
申请人： Constance J. Chang-Hasnain
发明人： Constance J. Chang-Hasnain
IPC分类号： H01L21/20 , H01L21/203 , H01S5/026 , H01S5/183 , H01S5/20 , H01S5/223 , H01S5/42
CPC分类号： H01S5/4087 , H01L21/02395 , H01L21/02463 , H01L21/02507 , H01L21/02546 , H01L21/02631 , H01S5/026 , H01S5/18305 , H01S5/423 , H01S5/18308 , H01S5/2059
摘要： A one or two dimensional integrated array of multiple-wavelength, vertical-cavity lasers and its method of making. All lasers are simultaneously formed on a common substrate by the sequential vertical growth of a lower reflector, a lower spacer, an active light emitting region, an upper spacer and an upper reflector. Resonant cavities are formed between the upper and lower reflectors, the optical lengths of which determine the lasing wavelengths. According to the invention, during the growth of at least part of this vertical structure, the growth is made controllably non-uniform over the substrate, thereby providing a spatial variation over the substrate of the resonant cavity length. Such non-uniform deposition may be achieved by deposition from an off-normal source onto a stationary substrate, by thermal gradients in the substrate or by diffusion limited growth onto mesas or valleys of different widths.
摘要翻译：多波长垂直腔激光器的一维或二维集成阵列及其制造方法。所有激光器通过下反射器，下隔板，有源发光区域，上隔板和上反射器的顺序垂直生长同时形成在公共基板上。谐振腔形成在上反射器和下反射器之间，其光学长度决定了激光波长。根据本发明，在该垂直结构的至少一部分的生长期间，在衬底上生长可控地不均匀，从而在谐振腔长度的衬底上提供空间变化。这种不均匀的沉积可以通过从偏离正常的源沉积到固定的衬底上，通过衬底中的热梯度或通过扩散限制生长到不同宽度的台面或谷上来实现。

5. 发明授权

US5771253A High performance micromechanical tunable verticle cavity surface emitting laser 失效
标题翻译：高性能微机械可调谐垂直腔表面发射激光器
公开(公告)号：US5771253A
公开(公告)日：1998-06-23
申请号：US791762
申请日：1997-01-29
申请人： Constance J. Chang-Hasnain , Edward C. Vail , Marianne S. Wu
发明人： Constance J. Chang-Hasnain , Edward C. Vail , Marianne S. Wu
IPC分类号： G02B26/00 , G02B26/02 , G02B26/08 , H01S3/105 , H01S5/022 , H01S5/14 , H01S5/183 , G02B6/26 , G02B6/42
CPC分类号： G02B26/001 , G02B26/02 , G02B26/0841 , H01S5/141 , H01S5/18366 , H01S3/105 , H01S5/02248
摘要： An electrostatically controlled cantilever apparatus for continuous tuning of the resonance wavelength of a Fabry-Perot cavity is disclosed. A resonant cavity is formed between two distributed Bragg reflector (DBR) mirrors each composed of multiple DBR layers. One such layer is replaced with a layer which has been fully oxidized except for a small aperture. This layer provides both optical and current confinement which allows for low threshold currents and high output power.
摘要翻译：公开了一种用于连续调谐法布里 - 珀罗腔谐振波长的静电控制悬臂装置。在由多个DBR层组成的两个分布式布拉格反射镜（DBR）镜之间形成谐振腔。一个这样的层被除了小孔之外已被完全氧化的层所取代。该层提供了允许低阈值电流和高输出功率的光学和电流限制。

6. 发明授权

US5760419A Monolithic wavelength meter and photodetector using a wavelength dependent reflector 失效
标题翻译：单片波长计和使用波长相关反射器的光电探测器
公开(公告)号：US5760419A
公开(公告)日：1998-06-02
申请号：US688866
申请日：1996-07-31
申请人： Rashit F. Nabiev , Constance J. Chang-Hasnain , Lars E. Eng , Kam-Yin Lau
发明人： Rashit F. Nabiev , Constance J. Chang-Hasnain , Lars E. Eng , Kam-Yin Lau
IPC分类号： H01L25/04 , H01L31/0352 , H01L29/06
CPC分类号： H01L31/0352 , H01L25/043 , H01L2924/0002
摘要： A compact and cost-effective wavelength meter and photodetector (10) that can measure simultaneously both wavelength and intensity has two back-to-back photodiodes (12 and 14) with a wavelength dependent distributed Bragg reflector (DBR) (28) positioned in-between. The wavelength resolution of this device is 1 nm or less. Easy design and fabrication of the device provides for reliable and cost-effective manufacturing. Applications include instrumentation and wavelength-division-multiplexing (WDM) in optical communication systems.
摘要翻译：可同时测量波长和强度的紧凑且具有成本效益的波长计和光电检测器（10）具有两个背对背光电二极管（12和14），其中波长相关分布布拉格反射器（DBR）（28）之间。该器件的波长分辨率为1nm以下。该设备的简单设计和制造提供了可靠和具有成本效益的制造。应用包括光通信系统中的仪器和波分复用（WDM）。

7. 发明授权

US06233263B1 Monitoring and control assembly for wavelength stabilized optical system 失效
标题翻译：波长稳定光学系统的监控组件
公开(公告)号：US06233263B1
公开(公告)日：2001-05-15
申请号：US09326126
申请日：1999-06-04
申请人： Constance J. Chang-Hasnain , Renato Dato , Peter Kner , Gabriel S. Li , Philip Worland , Rang-Chen Yu , Wupen Yuen
发明人： Constance J. Chang-Hasnain , Renato Dato , Peter Kner , Gabriel S. Li , Philip Worland , Rang-Chen Yu , Wupen Yuen
IPC分类号： H01S313
CPC分类号： H01S5/0264 , H01S5/0078 , H01S5/0208 , H01S5/026 , H01S5/0422 , H01S5/0683 , H01S5/0687 , H01S5/18366
摘要： A monitoring and control assembly for an optical system includes a tunable laser. The laser generates a divergent output beam along an optical axis. A first photodetector is provided. A wavelength selective filter is tilted at an angle relative to the optical axis that provides an angular dependence of a wavelength reflection of the wavelength selective filter and directs the reflected output beam towards the first photodetector.
摘要翻译：用于光学系统的监测和控制组件包括可调激光器。激光沿着光轴产生发散的输出光束。提供第一光电检测器。波长选择滤波器相对于光轴以一定角度倾斜，其提供波长选择滤波器的波长反射的角度依赖性，并将反射的输出光束引向第一光电检测器。

8. 发明授权

US06174749B1 Fabrication of multiple-wavelength vertical-cavity opto-electronic device arrays 失效
标题翻译：多波长垂直腔光电器件阵列的制作
公开(公告)号：US06174749B1
公开(公告)日：2001-01-16
申请号：US09078195
申请日：1998-05-13
申请人： Wupen Yuen , Constance J. Chang-Hasnain , Gabriel S. Li
发明人： Wupen Yuen , Constance J. Chang-Hasnain , Gabriel S. Li
IPC分类号： H01L2100
CPC分类号： H01S5/18358 , H01L33/0062 , H01L33/105 , H01S5/0042 , H01S5/2077 , H01S5/4087 , H01S5/423 , H01S2304/02
摘要： The present invention provides multiple-wavelength vertical-cavity surface-emitting laser (“MW-VCSEL”) arrays. These arrays are fabricated in a molecular beam epitaxy system or the like using two patterned-substrate growth techniques. The growth techniques can be used with an in-situ laser reflectometry. In one embodiment, a temperature dependent growth rate to create the devices is provided. In an alternative aspect, uniform growth is performed followed by a temperature-dependent desorption technique. These techniques provided desired wavelength span and desired characteristics.
摘要翻译：本发明提供了多波长垂直腔表面发射激光器（“MW-VCSEL”）阵列。这些阵列使用两种图案化衬底生长技术在分子束外延系统等中制造。生长技术可以使用原位激光反射计。在一个实施例中，提供了用于创建装置的温度依赖性增长率。在另一方面，进行均匀生长，然后进行温度依赖性解吸技术。这些技术提供了期望的波长范围和期望的特性。

9. 发明授权

US5541756A Apparatus and method for routing optical signals through wavelength-coding in a self-routed wavelength addressable network 失效
标题翻译：在自路由波长可寻址网络中通过波长编码路由光信号的装置和方法
公开(公告)号：US5541756A
公开(公告)日：1996-07-30
申请号：US341654
申请日：1994-11-17
申请人： Constance J. Chang-Hasnain , Kam-Yin Lau , Joseph W. Goodman , Anujan Varma
发明人： Constance J. Chang-Hasnain , Kam-Yin Lau , Joseph W. Goodman , Anujan Varma
IPC分类号： H04J14/02 , H04Q11/00 , H04J4/00 , H04J14/00
CPC分类号： H04J14/02 , H04J14/0246 , H04J14/025 , H04Q11/0005 , H04J14/0226 , H04J14/0282 , H04Q2011/0015 , H04Q2011/0022 , H04Q2011/0026 , H04Q2011/0039 , H04Q2011/0041 , H04Q2011/0052 , H04Q2011/0077
摘要： A network and method for routing optical signals through wavelength-coding of routing tags belonging to the optical signals. The routing tag preferably consists of one or more header pulses S.sub.i which are chosen from among header wavelengths .lambda..sub.hi. Preferably, the header wavelengths .lambda..sub.hi are different from wavelengths used by the data. The optical signal also has reset tag containing preferably one reset pulse R preferably having a unique reset wavelength .lambda..sub.r. The optical data is contained between the routing tag and the reset tag. The network has a splitter for dividing the optical signal into two or more split optical signals, which are copies of the original optical signal. A wavelength differentiating element is positioned in the path of one of the split optical signals to differentiate and preferably spatially resolve the header wavelengths of the header pulses. An opto-electronic control system, consisting of opto-electronic sensors and an electronic control circuit, generates electronic control signals based on the wavelength-coded information in the header tag. These electronic control signals are used to route one or more of the split optical signals through an optical switch. The network can be made up of one simple switch or a large number of complex switches.
摘要翻译：一种用于通过属于光信号的路由标签的波长编码来路由光信号的网络和方法。路由标签优选地由从报头波长λhi中选择的一个或多个报头脉冲Si组成。优选地，标题波长λhi不同于由数据使用的波长。光信号还具有优选地具有优选地具有唯一复位波长λr的一个复位脉冲R的复位标签。光学数据包含在路由标签和复位标签之间。网络具有用于将光信号分成两个或更多个分离光信号的分离器，它们是原始光信号的副本。波长差分元件位于分割光信号中的一个的路径中，以区分并优选地空间地解析标题脉冲的标题波长。由光电传感器和电子控制电路组成的光电控制系统基于头标中的波长编码信息生成电子控制信号。这些电子控制信号用于通过光学开关路由一个或多个分离光信号。网络可以由一个简单的交换机或大量的复杂交换机组成。

10. 发明授权

US5960024A Vertical optical cavities produced with selective area epitaxy 失效
标题翻译：用选择性面积外延生产的垂直光学腔
公开(公告)号：US5960024A
公开(公告)日：1999-09-28
申请号：US50657
申请日：1998-03-30
申请人： Gabriel S. Li , Wupen Yuen , Constance J. Chang-Hasnain
发明人： Gabriel S. Li , Wupen Yuen , Constance J. Chang-Hasnain
IPC分类号： H01S5/183 , H01S5/20 , H01S5/40 , H01S5/42 , H01S3/19
CPC分类号： H01S5/18358 , H01S5/1057 , H01S5/106 , H01S5/423 , H01S2301/18 , H01S5/18388 , H01S5/2077 , H01S5/4087
摘要： A monolithic vertical optical cavity device built up along a vertical direction. The device has a bottom Distributed Bragg Reflector (DBR), a Quantum Well (QW) region consisting of least one active layer grown on top of the bottom DBR by using a Selective Area Epitaxy (SAE) mask such that the active layer or layers exhibit a variation in at least one physical parameter in a horizontal plane perpendicular to the vertical direction and a top DBR deposited on top of the QW region. A spacer is deposited with or without SAE adjacent the QW region. The device has a variable Fabry-Perot distance defined along the vertical direction between the bottom DBR and the top DBR and a variable physical parameter of the active layer. The varying physical parameter of the active layers is either their surface curvature and/or the band gap and both of these parameters are regulated by SAE. The monolithic vertical cavity device can be used as a Vertical Cavity Surface Emitting Laser (VCSEL) or a Vertical Cavity Detector (VCDET).
摘要翻译：沿垂直方向建立的单片垂直光学腔装置。该器件具有底部分布布拉格反射器（DBR），量子阱（QW）区域，其由通过选择区域外延（SAE）掩模在底部DBR顶部生长的至少一个活性层组成，使得活性层或层显示垂直于垂直方向的水平面中的至少一个物理参数的变化和沉积在QW区域顶部的顶部DBR。隔离层沉积有或没有与邻近QW区域的SAE。该装置具有沿底部DBR和顶部DBR之间的垂直方向限定的可变的法布里 - 珀罗距离以及有源层的可变物理参数。活性层的变化的物理参数是它们的表面曲率和/或带隙，并且这些参数都由SAE调节。单片垂直腔装置可用作垂直腔面发射激光（VCSEL）或垂直腔探测器（VCDET）。

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