公开(公告)号：US09967035B2

公开(公告)日：2018-05-08

申请号：US15134546

申请日：2016-04-21

申请人： Alcatel-Lucent USA Inc.

发明人： Hungkei Chow ,  Jie Li ,  Ka Lun Lee

IPC分类号： H04B10/50 ,  H04B10/564 ,  H04B10/524 ,  H04L7/00 ,  H01S5/042 ,  H01S5/062

CPC分类号： H04B10/564 ,  H01S5/0427 ,  H01S5/06213 ,  H04B10/504 ,  H04B10/524 ,  H04L7/0075

摘要： Various embodiments of an optical transmitter and a method of operating an optical transmitter are disclosed. In one embodiment, the optical transmitter includes a laser and a laser driver configured to drive the laser using either a voltage driving topology (CDT) or a current-driving topology (VDT). The laser driver includes a switch that is configured to switch between the CDT and the CDT based on an operating frequency of the optical transmitter.

公开(公告)号：US09882336B2

公开(公告)日：2018-01-30

申请号：US15477920

申请日：2017-04-03

申请人： Hisense Broadband Multimedia Technologies Co., Ltd. ,  Hisense Broadband Multimedia Technologies, Ltd.

发明人： Qiang Zhang ,  Qisheng Zhao ,  Shihai Yang

IPC分类号： H01S3/00 ,  H01S3/13 ,  H01S3/139

CPC分类号： H01S3/0085 ,  H01S3/1305 ,  H01S3/1398 ,  H01S5/0085 ,  H01S5/06213 ,  H04B10/00

摘要： The disclosure provides an optical module, including a laser, the laser including a light emitting region and a modulation region, and light emitted by the light emitting region emitting toward the modulation region; a first driver circuit, the first driver circuit being connected to the light emitting region, so that the light emitting region emits light with adjusted optical power; and a second driver circuit, the second driver circuit being connected to the modulation region, so that the modulation region changes the optical power of the light emitted from the light emitting region.

公开(公告)号：US20170064265A1

公开(公告)日：2017-03-02

申请号：US15348587

申请日：2016-11-10

申请人： Sony Corporation

发明人： Motoi Kimura ,  Tsutomu Kurihara

IPC分类号： H04N9/31 ,  H01S5/40 ,  H01S5/042 ,  G02B27/48 ,  H01S5/062

CPC分类号： H04N9/3135 ,  G02B27/48 ,  G09G3/02 ,  G09G2320/0233 ,  H01S5/0427 ,  H01S5/06213 ,  H01S5/06216 ,  H01S5/0652 ,  H01S5/4093 ,  H01S2301/02 ,  H04N5/74 ,  H04N9/3129 ,  H04N9/3161 ,  H04N9/3179

摘要： A laser driving circuit, a laser driving method, and a device using laser light that can reduce speckle noise caused by laser light as coherent light are provided.In the laser driving circuit that generates laser driving current for driving a plurality of laser light sources emitting laser light of different wavelengths on the basis of an input video signal, a high-frequency signal of a frequency exceeding the band of the video signal is superimposed on the laser driving current generated on the basis of the input video signal, whereby speckle noise caused by the laser light as coherent light is reduced.

摘要翻译： 在基于输入视频信号产生用于驱动发射不同波长的激光的多个激光源的激光驱动电流的激光驱动电路中，叠加超过视频信号的频带的频率的高频信号 基于输入视频信号产生的激光器驱动电流，由此减少由激光引起的斑点噪声作为相干光。

公开(公告)号：US09516258B2

公开(公告)日：2016-12-06

申请号：US14349592

申请日：2012-10-04

申请人： Sony Corporation

发明人： Motoi Kimura ,  Tsutomu Kurihara

IPC分类号： H01S3/00 ,  H04N5/74 ,  G02B27/48 ,  H04N9/31 ,  H01S5/065 ,  G09G3/02 ,  H01S5/042 ,  H01S5/40 ,  H01S5/062

CPC分类号： H04N9/3135 ,  G02B27/48 ,  G09G3/02 ,  G09G2320/0233 ,  H01S5/0427 ,  H01S5/06213 ,  H01S5/06216 ,  H01S5/0652 ,  H01S5/4093 ,  H01S2301/02 ,  H04N5/74 ,  H04N9/3129 ,  H04N9/3161 ,  H04N9/3179

摘要： A laser driving circuit, a laser driving method, and a device using laser light that can reduce speckle noise caused by laser light as coherent light are provided. In the laser driving circuit that generates laser driving current for driving a plurality of laser light sources emitting laser light of different wavelengths on the basis of an input video signal, a high-frequency signal of a frequency exceeding the band of the video signal is superimposed on the laser driving current generated on the basis of the input video signal, whereby speckle noise caused by the laser light as coherent light is reduced.

摘要翻译： 提供激光驱动电路，激光驱动方法和使用可以减少由激光引起的斑点噪声作为相干光的激光的装置。 在基于输入视频信号产生用于驱动发射不同波长的激光的多个激光源的激光驱动电流的激光驱动电路中，叠加超过视频信号的频带的频率的高频信号 基于输入视频信号产生的激光器驱动电流，由此减少由激光引起的斑点噪声作为相干光。

公开(公告)号：US20160299065A1

公开(公告)日：2016-10-13

申请号：US15027883

申请日：2015-09-23

申请人： SIEMENS AKTIENGESELLSCHAFT

发明人： Franz STEINBACHER

IPC分类号： G01N21/39 ,  G01J3/433 ,  H01S5/062 ,  G01J3/42

CPC分类号： G01N21/39 ,  G01J3/42 ,  G01J3/433 ,  G01N33/0009 ,  G01N2021/399 ,  G01N2201/0612 ,  G01N2201/0691 ,  H01S5/06213 ,  H01S5/06216 ,  H01S5/0622

摘要： Method and gas analyzer for measuring the concentration of a gas component in a sample gas, wherein to measure the concentration of a gas component in a sample gas, a laser diode is actuated by a current and light generated by the laser diode is guided through the sample gas to a detector, the current is simultaneously varied within periodically successive sampling intervals for the wavelength-dependent sampling of an absorption line of interest of the gas component, and the current can be additionally modulated sinusoidally based on wavelength modulation spectroscopy with a low frequency and small amplitude, such that a measuring signal generated by the detector is evaluated to form a measurement result, where to improve the measuring signal-noise ratio and achieve a much lower detection limit with the same measuring distance, the current is modulated with a high (RF) frequency in the GHz range so that no wavelength modulation occurs, and an RF modulation amplitude is selected at the maximum level using the linear control range of the laser diode where, before evaluation, the measuring signal is demodulated at the radio frequency.

摘要翻译： 用于测量样品气体中气体组分浓度的方法和气体分析器，其中为了测量样品气体中的气体组分的浓度，激光二极管由电流驱动，激光二极管产生的光被引导通过 采样气体到检测器，电流在周期性连续的采样间隔内同时变化，用于气体成分的感兴趣吸收线的波长相关采样，并且可以基于波长调制光谱法以低频率正弦调制电流 并且小振幅，使得由检测器产生的测量信号被评估以形成测量结果，其中改善测量信噪比并且以相同的测量距离实现低得多的检测限，电流被调制为高 （RF）频率，使得不发生波长调制，并且在该频率下选择RF调制幅度 使用激光二极管的线性控制范围的最大电平，其中在评估之前，测量信号在射频处被解调。

公开(公告)号：US09379515B1

公开(公告)日：2016-06-28

申请号：US13385275

申请日：2012-02-09

申请人： Mehdi Asghari ,  Dazeng Feng

发明人： Mehdi Asghari ,  Dazeng Feng

IPC分类号： H01S5/00 ,  H01S3/13 ,  H01S3/10 ,  H01S5/068 ,  H01S5/0625

CPC分类号： H01S3/1307 ,  H01S3/10053 ,  H01S5/026 ,  H01S5/06213 ,  H01S5/0625 ,  H01S5/06821 ,  H01S5/141 ,  H01S5/3412 ,  H01S5/4012 ,  H01S5/4062 ,  H01S5/4068

摘要： An optical chip includes multiple laser cavities that each reflects a different portion of a light signal back and forth between reflective components. Each laser cavity guides one of the light signal portions through one or more waveguides. The one or more waveguides from different laser cavities being optically coupled to one another. A combiner receives the light signal portion from each of the laser cavities and combines the light signal portions into a light signal.

摘要翻译： 光学芯片包括多个激光腔，其各自在反射部件之间来回反射光信号的不同部分。 每个激光腔通过一个或多个波导引导一个光信号部分。 来自不同激光腔的一个或多个波导彼此光耦合。 组合器从每个激光腔接收光信号部分，并将光信号部分组合成光信号。

公开(公告)号：US20150331672A1

公开(公告)日：2015-11-19

申请号：US14468490

申请日：2014-08-26

申请人： Kabushiki Kaisha Toshiba

发明人： Zhiliang YUAN ,  Marco Lucamarini ,  Andrew James Shields

IPC分类号： G06F7/58 ,  H01S5/065

CPC分类号： G06F7/588 ,  H01S5/06213 ,  H01S5/065 ,  H01S5/0651 ,  H04L9/0852

摘要： A random number generation system, comprising: a light source configured to generate light pulses and a driving unit configured to drive said light source such that the phase of each light pulse has a random relationship to the phase of each subsequently generated light pulse, and such that each light pulse is generated with at least two local maxima in the temporal intensity profile.

摘要翻译： 一种随机数生成系统，包括：被配置为产生光脉冲的光源和被配置为驱动所述光源的驱动单元，使得每个光脉冲的相位与随后产生的每个光脉冲的相位具有随机关系， 每个光脉冲在时间强度分布中以至少两个局部最大值产生。

公开(公告)号：US09184552B2

公开(公告)日：2015-11-10

申请号：US13950626

申请日：2013-07-25

申请人： Google Inc.

发明人： Paolo Baroni ,  De Donno Marco ,  Anna Ronchi

IPC分类号： H01S3/10 ,  H01S5/14 ,  H01S3/1055 ,  H01S5/022 ,  H01S5/024 ,  H01S5/062 ,  H01S5/0625 ,  H01S5/065 ,  H01S5/0683 ,  H01S5/10

CPC分类号： H01S3/10038 ,  H01S3/1055 ,  H01S5/02216 ,  H01S5/02248 ,  H01S5/02284 ,  H01S5/02415 ,  H01S5/02476 ,  H01S5/02492 ,  H01S5/062 ,  H01S5/06213 ,  H01S5/06246 ,  H01S5/06251 ,  H01S5/0653 ,  H01S5/0683 ,  H01S5/10 ,  H01S5/101 ,  H01S5/141

摘要： A laser apparatus includes an external cavity laser (ECL) where the optical signal is modulated by an electrical modulation signal for modulating in frequency the laser output signal. The modulation in frequency produces a modulation of intensity (power) of the laser output signal, also denoted amplitude modulation (AM). A method of controlling the AM amplitude of a signal emitted by an ECL includes a gain medium, a phase element with variable transmissivity induced by the modulation, and a spectrally selective optical filter that selects and keeps the AM amplitude below a certain desired value or minimizes such value. A control method and a laser apparatus are also described in which the reduction of the AM component of the output power is achieved by acting on the gain of the gain medium of the ECL.

摘要翻译： 激光装置包括外腔激光器（ECL），其中光信号由用于调制激光输出信号的电调制信号调制。 频率调制产生激光输出信号的强度（功率）调制，也称为幅度调制（AM）。 控制由ECL发出的信号的AM振幅的方法包括增益介质，由调制引起的具有可变透射率的相位元件以及选择并保持AM振幅低于特定期望值或最小化的光谱选择性滤光器 这样的价值。 还描述了控制方法和激光装置，其中通过作用于ECL的增益介质的增益来实现输出功率的AM分量的减小。

公开(公告)号：US09116116B2

公开(公告)日：2015-08-25

申请号：US12935155

申请日：2009-03-27

申请人： Juichiro Ukon ,  Takuya Ido ,  Susumu Mimura

发明人： Juichiro Ukon ,  Takuya Ido ,  Susumu Mimura

IPC分类号： H01S5/024 ,  H01S5/068 ,  G01N21/39 ,  G01J3/10 ,  G01N21/3504 ,  G01N21/77 ,  H01S5/022 ,  H01S5/062 ,  H01S5/0687

CPC分类号： G01N21/39 ,  G01J3/108 ,  G01N21/3504 ,  G01N21/7703 ,  G01N2201/0231 ,  H01S5/02248 ,  H01S5/024 ,  H01S5/02415 ,  H01S5/06213 ,  H01S5/0687

摘要： Provided is an optical analyzer which can promote enhancement of measurement sensitivity, cost reduction, size reduction, structural flexibility, disturbance resistance, and the like, at the same time. A laser device to be used in such optical analyzer is also provided. An optical analyzer comprises a laser light source (2); a wavelength selection element (3) for selecting and leading out light having a wavelength substantially equal to the absorption wavelength of an analysis object from among light outputted from the laser light source (2); an optical detection means (5) for detecting the intensity of light red out from the wavelength selection element (3); and a drive current control means (6) for increasing or decreasing the drive current of the laser light source (2) near a specified current value thereof for outputting light of the absorption wavelength, and setting the drive current at such a current value as the intensity of light detected by the optical detection means (5) has a peak value. The laser light source (2), the wavelength selection element (3), and the optical detection means (5) are mounted on a single substrate (11) which can regulate the temperature to a constant level.

摘要翻译： 提供了能够同时提高测量灵敏度，降低成本，降低尺寸，结构灵活性，抗干扰性等的光学分析仪。 还提供了用于这种光学分析仪的激光装置。 光学分析仪包括激光光源（2）; 波长选择元件（3），用于从激光源（2）输出的光中选择并引出具有与分析对象的吸收波长大致相同的波长的光; 用于检测从波长选择元件（3）发出的红光强度的光学检测装置（5）。 以及驱动电流控制装置（6），用于增加或减少靠近其规定电流值的激光光源（2）的驱动电流，用于输出吸收波长的光，并将驱动电流设定为如 由光检测装置（5）检测到的光的强度具有峰值。 激光光源（2），波长选择元件（3）和光学检测装置（5）安装在能够将温度调节到恒定水平的单个基板（11）上。

公开(公告)号：US09065240B2

公开(公告)日：2015-06-23

申请号：US14376345

申请日：2013-01-25

申请人： Juergen Seidel ,  Reinhold Fiess ,  Juergen Hasch ,  Annette Frederiksen

发明人： Juergen Seidel ,  Reinhold Fiess ,  Juergen Hasch ,  Annette Frederiksen

IPC分类号： H01S3/00 ,  H01S5/042 ,  H01S5/068 ,  H01S5/0683 ,  H01S3/13

CPC分类号： H01S5/0427 ,  G02B27/48 ,  H01S3/1305 ,  H01S5/0428 ,  H01S5/06213 ,  H01S5/068 ,  H01S5/06808 ,  H01S5/06817 ,  H01S5/0683 ,  H01S5/06832 ,  H01S5/06835 ,  H01S2301/02 ,  H04N9/3155

摘要： An actuation device for a laser diode includes: a first driver device which is set up to generate a high-frequency modulated actuation signal and to feed the signal into the laser diode for speckle suppression, and an evaluation circuit, which is coupled with the first driver device, and which is set up to output to the first driver device an intensity signal indicating the intensity of the light emitted by the laser diode and a control signal as a function of the intensity signal in order to regulate the high-frequency modulated actuation signal.

摘要翻译： 用于激光二极管的致动装置包括：第一驱动器装置，其被设置为产生高频调制致动信号并将信号馈送到用于散斑抑制的激光二极管中;以及评估电路，其与第一 驱动器装置，并且其被设置为向第一驱动器装置输出指示由激光二极管发射的光的强度的强度信号和作为强度信号的函数的控制信号，以便调节高频调制致动 信号。