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215 条记录 (耗时 0.016 秒)

    Smart laser diode array assembly
    71.
    发明授权
    Smart laser diode array assembly 失效
    智能激光二极管阵列组件

    公开(公告)号：US06144684A

    公开(公告)日：2000-11-07

    申请号：US49579

    申请日：1998-03-27

    申请人： Theodore S. McMinn ,  Dana A. Marshall ,  Michael A. Hope ,  Geoffrey O. Heberle

    发明人： Theodore S. McMinn ,  Dana A. Marshall ,  Michael A. Hope ,  Geoffrey O. Heberle

    IPC分类号： H01S3/094 ,  H01S5/00 ,  H01S5/022 ,  H01S5/024 ,  H01S5/06 ,  H01S5/068 ,  H01S5/22 ,  H01S5/40 ,  H01S3/19

    CPC分类号： H01S5/4031 ,  H01S5/4025 ,  H01S5/0014 ,  H01S5/0021 ,  H01S5/02264 ,  H01S5/02272 ,  H01S5/024 ,  H01S5/02407 ,  H01S5/02415 ,  H01S5/0617 ,  H01S5/06825 ,  H01S5/40

    摘要： A laser diode array assembly includes a laser diode array and a memory device integrally packaged with the array. The memory device includes operational information concerning the array. The memory device is accessible by a host external operating system which determines the manner in which the array is to be powered based on the operational information. The memory device may have the capability to be written to such that the external operating system can record in the memory device significant events such as extreme operational conditions, operational faults, and the on-time or shot-count of the array. The assembly may include sensors to which the operating system is coupled. The assembly may further include a processing means to monitor the sensors and provide real-time updates to the external operating system such that laser diode array is continuously powered in an optimal manner.

    摘要翻译： 激光二极管阵列组件包括激光二极管阵列和与阵列整体封装的存储器件。 存储器件包括与阵列相关的操作信息。 存储设备可由主机外部操作系统访问，主机外部操作系统基于操作信息确定阵列的供电方式。 存储器件可以具有被写入的能力，使得外部操作系统可以在存储器件中记录诸如极端操作条件，操作故障以及阵列的准时或镜头计数等重大事件。 组件可以包括操作系统耦合到的传感器。 组件还可以包括处理装置，用于监测传感器并提供对外部操作系统的实时更新，使得激光二极管阵列以最佳方式连续供电。

    Variable wavelength light source
    72.
    发明授权
    Variable wavelength light source 失效
    可变波长光源

    公开(公告)号：US5544183A

    公开(公告)日：1996-08-06

    申请号：US389714

    申请日：1995-02-15

    申请人： Toshiyuki Takeda

    发明人： Toshiyuki Takeda

    IPC分类号： H01S3/13 ,  H01S3/139 ,  H01S3/23 ,  H01S5/062 ,  H01S5/0687 ,  H01S5/40 ,  H04B10/07 ,  H04B10/293 ,  H04B10/548 ,  H04B10/564 ,  H04B10/572 ,  H01S3/00

    CPC分类号： H04B10/50 ,  H01S3/1304 ,  H01S5/0687 ,  H01S3/1394 ,  H01S3/2383 ,  H01S5/0623 ,  H01S5/40

    摘要： In a variable wavelength light source, a light source emits coherent light, a first optical branching device branches light emitted from the light source, a frequency control circuit controls in frequency a signal generator, an optical phase modulator subjects one of the branched light to phase modulation when the signal generator sends a modulation signal thereto, a variable wavelength light source emits coherent light having a variable frequency, the coherent light is branched by a second optical branching device, an optical coupler combines the output of the second optical branching device with that of the optical phase modulator, the combined light is detected by a light detector, a phase comparator compares the output of the light detector with that of the signal generator to convert the phase difference therebetween into voltage and outputs the same, which is limited in bandwidth by a low-pass filter and is outputted to the variable wavelength light source. As a result, it is possible to provide a variable wavelength light source wherein the frequency difference between the light source and the variable wavelength light source can be varied over a wide range.

    摘要翻译： 在可变波长光源中，光源发射相干光，第一光分支装置分支从光源发射的光，频率控制电路频率控制信号发生器，光相位调制器将分支光到相位之一 当信号发生器向其发送调制信号时，可变波长光源发射具有可变频率的相干光，相干光由第二光分路器分支，光耦合器将第二光分支器件的输出与 通过光检测器检测组合光，相位比较器将光检测器的输出与信号发生器的输出进行比较，将其中的相位差转换为电压，并将其输出为带宽限制 通过低通滤波器输出到可变波长光源。 结果，可以提供可变波长光源，其中光源和可变波长光源之间的频率差可以在宽范围内变化。

    Method of producing a semiconductor laser adapted for use in an analog optical communications system
    74.
    发明授权
    Method of producing a semiconductor laser adapted for use in an analog optical communications system 失效
    适用于模拟光通信系统的半导体激光器的制造方法

    公开(公告)号：US5034334A

    公开(公告)日：1991-07-23

    申请号：US420867

    申请日：1989-10-13

    申请人： Edward J. Flynn ,  Carl J. McGrath ,  Paul M. Nitzsche ,  Charles B. Roxlo

    发明人： Edward J. Flynn ,  Carl J. McGrath ,  Paul M. Nitzsche ,  Charles B. Roxlo

    IPC分类号： H04N7/22 ,  H01S5/00 ,  H01S5/068 ,  H01S5/40 ,  H04B10/00

    CPC分类号： H01S5/0014 ,  H01S5/06812 ,  H01S5/40 ,  Y10S148/095 ,  Y10S148/162

    摘要： An advantageous method of fabricating lasers adapted for use in a multichannel analog optical fiber communication system, e.g., a CATV system, is disclosed. A laser generally can be used in such a communication system only if it meets, inter alia, very stringent intermodulation specifications. To identify such lasers typically requires extensive testing. It has now been discovered that certain readily determinable parameters can be used to predict the intermodulation behavior of a given device. This discovery makes possible a simpler, and therefore less costly, process of identifying suitable lasers, resulting in a more economical method of making lasers for the stated application. The method comprises measuring the light versus current (L versus I) characteristic of a given laser, determining therefrom the first, second, and possibly higher, order derivatives of L with respect to I, and determining thereform a parameter that is a predictor of the distortion behavior of the laser. Exemplarily, the quantity is the normalized second order distortion (2HD/C), defined as 20 log (mL"/4L'.sup.2), where m is the modulation index, and L' and L" are the first and second derivatives, respectively, of L. 2HD/C has a pronounced minimum at I=I.sub.op , the current at which L"=0. Advantageously, lasers are selected that have 2HD/C less than a predetermined value (e.g., -70 dbc, with m=0.04) over a relatively wide current range (e.g., at least 4 mA).

    Laser apparatus
    75.
    发明授权
    Laser apparatus 失效
    激光设备

    公开(公告)号：US4385386A

    公开(公告)日：1983-05-24

    申请号：US285453

    申请日：1981-07-21

    申请人： Takeshi Ozeki ,  Toshifumi Tamura

    发明人： Takeshi Ozeki ,  Toshifumi Tamura

    IPC分类号： H01S3/10 ,  H01S5/062 ,  H01S5/0687 ,  H01S5/40 ,  H01S3/13

    CPC分类号： H01S5/0687 ,  H01S3/10 ,  H01S5/40 ,  H01S5/0622 ,  H01S5/4025

    摘要： A laser apparatus including first and second frequency sweeping laser devices, the sweep frequency range of each being different. The output laser beams of the first and second laser devices are multiplexed by a multiplexer. The output laser beam of the multiplexer is transmitted to a photodetector for detecting the difference in frequency between those of the first and second laser devices. A frequency monitor, coupled to the photodetector, provides a signal to a control circuit which causes the first and second laser devices to sequentially sweep their respective sweep frequency ranges.

    摘要翻译： 一种包括第一和第二频率扫描激光装置的激光装置，每个扫描频率范围不同。 第一和第二激光装置的输出激光束被多路复用器复用。 复用器的输出激光束被传输到光电检测器，用于检测第一和第二激光器件的频率差。 耦合到光电检测器的频率监视器向控制电路提供信号，该控制电路使得第一和第二激光装置顺序扫描它们各自的扫描频率范围。

    Integrated optical module
    76.
    发明授权
    Integrated optical module 有权

    公开(公告)号：US12019275B2

    公开(公告)日：2024-06-25

    申请号：US17757433

    申请日：2020-02-21

    申请人： Mitsubishi Electric Corporation

    发明人： Shinichi Kaneko

    IPC分类号： G02B6/293 ,  G02B6/42 ,  H01S5/022 ,  H01S5/40

    CPC分类号： G02B6/29367 ,  G02B6/29364 ,  G02B6/2938 ,  G02B6/4215 ,  G02B6/4292 ,  H01S5/022 ,  H01S5/40

    摘要： Provided here are: a mounting section having a light-emitting element for emitting an optical signal; a mounting section arranged alongside the mounting section and having a light-emitting element for emitting an optical signal that is different in wavelength from the optical signal; and an optical multiplexer having a filter for transmitting therethrough only the wavelength of the optical signal, a mirror for reflecting the optical signal transmitted through the filter, and a filter arranged alongside the filter, for transmitting therethrough only the wavelength of the optical signal, and for reflecting the optical signal reflected by the mirror and multiplexing it with the transmitted optical signal; wherein the light-emitting element is mounted in the mounting section to be displaced toward the light-emitting element from a center in a width direction across an emission direction of the optical signal.