利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

18 条记录 (耗时 0.027 秒)

    Analog optical fiber communication system, and laser adapted for use in such a system
    11.
    发明授权
    Analog optical fiber communication system, and laser adapted for use in such a system 失效
    模拟光纤通信系统和适用于这种系统的激光器

    公开(公告)号：US5111475A

    公开(公告)日：1992-05-05

    申请号：US672306

    申请日：1991-03-20

    申请人： David A. Ackerman ,  Leonard J. Ketelsen ,  Louis A. Koszi

    发明人： David A. Ackerman ,  Leonard J. Ketelsen ,  Louis A. Koszi

    IPC分类号： H01S5/028 ,  H01S5/06 ,  H01S5/062 ,  H01S5/0625 ,  H01S5/10 ,  H01S5/12 ,  H04B10/155

    CPC分类号： H04B10/58 ,  H01S5/12 ,  H04B10/504 ,  H04B10/541 ,  H01S5/028 ,  H01S5/06 ,  H01S5/06213 ,  H01S5/06255 ,  H01S5/06258 ,  H01S5/10 ,  H01S5/124 ,  H01S5/1243

    摘要： Lasers for use in multichannel analog optical fiber communication systems (e.g., of the type contemplated for CATV) have to meet very stringent requirements, including high linearity. DFB lasers are advantageously used in such communication systems. Typically only a relatively small percentage of the nominally identical DFB lasers on a wafer meet the specifications. It has now been discovered that the likelihood that a given DFB laser will meet the requirements is substantially increased if the laser comprises means that are adapted for producing a non-uniform photon density in the laser cavity, with the density of photons being larger in the rear portion of the cavity than in the front portion, such that during operation of the laser the gain in the back portion is substantially independent of the laser current, whereas the gain in the front portion is a function of the laser current. A particular embodiment of the invention is a "bare patch" DFB laser having a grating that extends only part way from the front facet towards the back facet, such that a portion of the laser cavity does not have the grating associated therewith. The design ensures that the proper photon density is established within the laser cavity with high probability, largely independent of the rear (HR) facet reflection phase.

    摘要翻译： 用于多通道模拟光纤通信系统（例如，针对CATV的类型）的激光器必须满足非常严格的要求，包括高线性度。 DFB激光器有利地用于这种通信系统中。 通常，晶片上名义上相同的DFB激光器的相对较小百分比符合规格。 现在已经发现，如果激光器包括适于在激光腔中产生不均匀的光子密度的装置，则给定的DFB激光器将满足要求的可能性显着增加，其中光子的密度在 使得在激光器的操作期间，背部的增益基本上与激光电流无关，而前部的增益是激光电流的函数。 本发明的一个具体实施方案是具有光栅的“裸贴片”DFB激光器，该光栅仅从前刻面朝向后刻面仅部分延伸，使得激光腔的一部分不具有与之相关联的光栅。 该设计确保在激光腔内以高概率建立适当的光子密度，很大程度上独立于后（HR）面反射相位。

    Analog optical fiber communication system, and laser adapted for use in such a system
    13.
    发明授权
    Analog optical fiber communication system, and laser adapted for use in such a system 失效
    模拟光纤通信系统和适用于这种系统的激光器

    公开(公告)号：US5285468A

    公开(公告)日：1994-02-08

    申请号：US916282

    申请日：1992-07-17

    申请人： David A. Ackerman ,  Paul M. Nitzsche ,  Paul W. Smith

    发明人： David A. Ackerman ,  Paul M. Nitzsche ,  Paul W. Smith

    IPC分类号： H01S5/00 ,  H01S5/028 ,  H01S5/06 ,  H01S5/12 ,  H01S3/08

    CPC分类号： H01S5/12 ,  H01S5/028

    摘要： We have discovered that the yield of DFB lasers suitable, e.g., for use in AM CATV systems can be substantially increased if the lasers have a back facet with a higher reflectivity (>80%, preferably >90%) HR coating thereon than is conventional (e.g., .about.65%). Exemplary currently preferred embodiments of the invention comprise a three-pair stack of .lambda./4 yttrium-stablized zirconia/Si having about 95% reflectivity.

    摘要翻译： 我们已经发现，如果激光器具有比常规的更高的反射率（> 80％，优选> 90％）的HR涂层的背面，那么适合于例如用于AM CATV系统的DFB激光器的产量可以显着增加 （例如-65％）。 本发明的示例性目前优选的实施方案包括具有约95％反射率的（λ）/ 4钇 - 稳定氧化锆/ Si的三对叠层。

    Photonics module apparatus
    14.
    发明授权
    Photonics module apparatus 失效
    光子模块装置

    公开(公告)号：US5181216A

    公开(公告)日：1993-01-19

    申请号：US844018

    申请日：1992-03-02

    申请人： David A. Ackerman ,  Greg E. Blonder ,  William M. MacDonald

    发明人： David A. Ackerman ,  Greg E. Blonder ,  William M. MacDonald

    IPC分类号： G02B6/42 ,  H01L33/00 ,  H01S5/02 ,  H01S5/022

    CPC分类号： G02B6/4234 ,  G02B6/4204 ,  H01S5/02252 ,  G02B6/423 ,  G02B6/4232 ,  H01L2224/48091 ,  H01L2224/48465 ,  H01S5/02284 ,  H01S5/0683

    摘要： A laser (15) is mounted on a planar surface of a monocrystalline silicon mounting member (12). A spherical lens (20) is mounted in a monocrystalline silicon cover member (13) which, when abutted and registered to the mounting member (12), aligns the spherical lens with the laser so that the output light can be projected along a precise predetermined path. The spherical lens (20) is mounted in a first V-shaped groove (31) which is made in the cover member by masking and etching. A second V-shaped groove intersects the first groove and defines a V-shaped edge in one side of the first groove. The spherical lens is then seated in the first V-shaped groove such that it bears against two points of the V-shaped edge and against one side wall (35) of the first V-shaped groove. A second lens (19) is mounted in the cover member in the same manner as the first lens and directs laser light from a rear facet of the laser to a mirror 30 and hence to a photodetector (21) mounted in the cover member.

    摘要翻译： 激光器（15）安装在单晶硅安装构件（12）的平坦表面上。 球面透镜（20）安装在单晶硅覆盖件（13）中，该单晶硅覆盖件（13）在与安装件（12）抵接并对准时将球面透镜与激光对准，使得输出光可以沿着精确的预定 路径。 球面透镜（20）安装在通过掩模和蚀刻在盖构件中制成的第一V形凹槽（31）中。 第二V形槽与第一槽相交，并在第一槽的一侧限定V形边。 然后将球面透镜安置在第一V形槽中，使得其抵接在V形边缘的两个点上并抵靠在第一V形槽的一个侧壁（35）上。 第二透镜（19）以与第一透镜相同的方式安装在盖构件中，并将激光的激光的后面引导到反射镜30，并由此安装到安装在盖构件中的光电检测器（21）。

    Capacitance guided assembly of parts
    16.
    发明授权
    Capacitance guided assembly of parts 失效
    电容引导组装零件

    公开(公告)号：US4982333A

    公开(公告)日：1991-01-01

    申请号：US256661

    申请日：1988-10-13

    申请人： David A. Ackerman ,  Robert A. Boie

    发明人： David A. Ackerman ,  Robert A. Boie

    IPC分类号： H01L21/52 ,  B23P19/00 ,  B25J9/18 ,  G05B13/02 ,  G05B19/402 ,  G05D3/00 ,  G05D3/12 ,  H01L21/60

    CPC分类号： B23P19/105 ,  B23P19/12 ,  G05B19/402 ,  G05B2219/49113 ,  H01L2924/0002

    摘要： There are disclosed methods and apparatuses for the assembling of parts using capacitive sensing, both for controlling the closure or "homing" phase of the assembly process and for acquiring one or more of the parts prior to that phase. Assembling of semiconductor parts to essentially two-dimensional and three-dimensional packages, the insertion of a peg in a hole, and an application to tape-automated-bonding (TAB) technology are all described, as are various representations of the resulting capacitive data. Included are the uses of scheduling and optical sensing to supplement capacitive sensing in the methods and apparatuses.

    摘要翻译： 公开了用于组装使用电容感测的部件的方法和装置，用于控制组装过程的闭合或“归位”阶段并且用于在该阶段之前获取一个或多个部件。 将半导体部件组装到基本上二维和三维封装，将孔插入孔中，以及应用于带自动键合（TAB）技术的描述，以及所得到的电容数据的各种表示 。 包括在方法和装置中使用调度和光学感测来补充电容感测。

    Article comprising an opto-electronic device and an optical waveguide coupled thereto, and method of making the article
    17.
    发明授权
    Article comprising an opto-electronic device and an optical waveguide coupled thereto, and method of making the article 失效
    本发明涉及一种光电器件和耦合到其上的光波导件及其制造方法

    公开(公告)号：US4892374A

    公开(公告)日：1990-01-09

    申请号：US163689

    申请日：1988-03-03

    申请人： David A. Ackerman ,  Louis A. Koszi

    发明人： David A. Ackerman ,  Louis A. Koszi

    IPC分类号： G02B6/30 ,  G02B6/122 ,  G02B6/42

    CPC分类号： G02B6/4225 ,  G02B6/4221 ,  G02B6/4228

    摘要： A method for aligning an opto-electronic device such as a semiconductor laser to a waveguide on a substrate is disclosed. The method comprises placing the device onto the substrate such that it is in rough alignment with the waveguide, optically pumping the device such that the device emits electromagnetic radiation, with some of the emitted radiation being coupled into the waveguide and detected by appropriate means. If indicated by the detector signal, the position of the device is then adjusted until the desired degree of coupling is attained, whereupon the device is mechanically secured to the substrate and appropriate electrical connections made between device and substrate. Devices useful in the practice of the method typically comprise a window in their top metallization layer.