公开(公告)号：US20150288144A1

公开(公告)日：2015-10-08

申请号：US14726406

申请日：2015-05-29

申请人： California Institute of Technology

发明人： Mayank Raj ,  Azita Emami

IPC分类号： H01S5/183 ,  H01S5/0625 ,  H01S5/068 ,  H01S5/06 ,  H01S3/13

CPC分类号： H01S5/183 ,  H01S3/13 ,  H01S3/1305 ,  H01S3/1306 ,  H01S5/0014 ,  H01S5/0035 ,  H01S5/0427 ,  H01S5/0604 ,  H01S5/0617 ,  H01S5/06213 ,  H01S5/06255 ,  H01S5/068 ,  H01S5/06808 ,  H01S5/18311

摘要： Technologies are generally described for implementing non-linear VCSEL equalization. In some examples, a rising edge tap parameter, a falling edge tap parameter, an equalization delay and a bias current may be used to equalize a data signal to be output from a VCSEL. A VCSEL model may be used to derive a VCSEL response to one or more isolated data pulses. The derived response may then be used to determine the rising and falling edge tap parameters and an equalization delay, based on a bias current value for the VCSEL and a data rate associated with the data signal. The data signal may then be adjusted based on the equalization delay and the rising and falling edge tap parameter and sent to the VCSEL for output. At the same time, the VCSEL may be biased with a bias current having the bias current value.

摘要翻译： 通常描述了用于实现非线性VCSEL均衡的技术。 在一些示例中，可以使用上升沿抽头参数，下降沿抽头参数，均衡延迟和偏置电流来均衡要从VCSEL输出的数据信号。 可以使用VCSEL模型来导出对一个或多个隔离数据脉冲的VCSEL响应。 然后，导出的响应可以用于基于VCSEL的偏置电流值和与数据信号相关联的数据速率来确定上升沿和下降沿抽头参数以及均衡延迟。 然后可以基于均衡延迟和上升沿和下降沿抽头参数来调整数据信号，并将其发送到VCSEL以进行输出。 同时，VCSEL可以偏置具有偏置电流值的偏置电流。

公开(公告)号：US20150180200A1

公开(公告)日：2015-06-25

申请号：US14622414

申请日：2015-02-13

申请人： Hayato FUJITA ,  Atsufumi OMORI ,  Muneaki IWATA ,  Masaaki ISHIDA

发明人： Hayato FUJITA ,  Atsufumi OMORI ,  Muneaki IWATA ,  Masaaki ISHIDA

IPC分类号： H01S5/042 ,  B41J2/455 ,  H01S5/026 ,  H01S5/183 ,  H01S5/068

CPC分类号： H01S5/0425 ,  B41J2/435 ,  B41J2/455 ,  B41J2/471 ,  G06K15/1209 ,  H01S5/0261 ,  H01S5/0427 ,  H01S5/06 ,  H01S5/068 ,  H01S5/183 ,  H05B37/02 ,  Y02B20/202

摘要： A light source drive circuit which drives a light source is disclosed, including a drive current generating unit which generates a drive current, the driving current including a predetermined current for obtaining a predetermined light amount from the light source; and first and second overshoot currents which are applied to the predetermined current in synchronization thereto; and a control unit which sets, to the drive current generating unit, a value of the first overshoot current to a fixed value, and a value of the second overshoot current in accordance with a light amount output from the light source.

摘要翻译： 公开了一种驱动光源的光源驱动电路，包括产生驱动电流的驱动电流产生单元，包括用于从光源获得预定光量的预定电流的驱动电流; 以及与其同步地施加到预定电流的第一和第二过冲电流; 以及控制单元，其根据从光源输出的光量将驱动电流产生单元的第一过冲电流的值设定为固定值，以及第二过冲电流的值。

公开(公告)号：US09020006B2

公开(公告)日：2015-04-28

申请号：US14364746

申请日：2012-01-18

申请人： Michael Renne Ty Tan ,  David A. Fattal ,  Wayne V. Sorin ,  Sagi Varghese Mathai

发明人： Michael Renne Ty Tan ,  David A. Fattal ,  Wayne V. Sorin ,  Sagi Varghese Mathai

IPC分类号： H01S5/00 ,  H01S5/10 ,  H01S5/183 ,  H01S5/187

CPC分类号： H01S5/423 ,  B82Y20/00 ,  G02B6/12016 ,  G02B6/12019 ,  G02B6/12026 ,  G02B6/124 ,  G02B6/13 ,  G02B2006/12107 ,  G02B2006/12164 ,  H01S5/0215 ,  H01S5/02248 ,  H01S5/02461 ,  H01S5/0268 ,  H01S5/068 ,  H01S5/1092 ,  H01S5/183 ,  H01S5/18319 ,  H01S5/18363 ,  H01S5/18386 ,  H01S5/187 ,  H01S5/3412 ,  H01S5/34313 ,  H01S5/3434 ,  H01S5/4087

摘要： Apparatuses and methods for high density laser optics are provided. An example, of a laser optics apparatus includes a plurality of vertical cavity surface emitting lasers (VCSELs) in a monolithically integrated array, a high contrast grating (HCG) integrated with an aperture of a vertical cavity of each of the plurality of the VCSELs to enable emission of a single lasing wavelength of a plurality of lasing wavelengths, and a plurality of single mode waveguides, each integrated with a grating coupler, that are connected to each of the plurality of the integrated VCSELs and the HCGs, where each of the grating couplers is aligned to an integrated VCSEL and HCG.

摘要翻译： 提供了用于高密度激光光学器件的设备和方法。 激光光学装置的示例包括在单片集成阵列中的多个垂直腔表面发射激光器（VCSEL），与多个VCSEL中的每一个VCSEL的垂直腔的孔集成的高对比度光栅（HCG），以及 使得能够发射多个激光波长的单个激光波长的发射，以及与光栅耦合器集成的多个单模波导，其连接到多个集成VCSEL和HCG中的每一个，其中每个光栅 耦合器与集成的VCSEL和HCG对齐。

公开(公告)号：US20150110142A1

公开(公告)日：2015-04-23

申请号：US14386183

申请日：2012-04-25

申请人： Zhubiao Zhu ,  Dacheng Zhou ,  Daniel A. Berkram

发明人： Zhubiao Zhu ,  Dacheng Zhou ,  Daniel A. Berkram

IPC分类号： H01S5/06 ,  H01S5/42

CPC分类号： H01S5/06 ,  H01S3/13 ,  H01S3/1306 ,  H01S3/131 ,  H01S5/068 ,  H01S5/06832 ,  H01S5/183 ,  H01S5/423 ,  H04B10/564

摘要： Methods, systems, and computer-readable mediah are provided for operating a vertical-cavity surface-emitting laser. Operating a vertical-cavity surface-emitting laser can include sending a signal to a driver to decrease an optical power of a vertical cavity surface emitting laser transmitter, and sending a signal to the driver associated with increasing the optical power by a particular amount in response to determining that the optical power is insufficient for reception by a receiver.

摘要翻译： 提供了用于操作垂直腔表面发射激光器的方法，系统和计算机可读介质。 操作垂直腔表面发射激光器可以包括向驾驶员发送信号以降低垂直腔表面发射激光发射器的光功率，并且向响应于发射信号的光功率增加特定量发送信号到驱动器 以确定光功率不足以用于接收机的接收。

公开(公告)号：US08942267B2

公开(公告)日：2015-01-27

申请号：US13473256

申请日：2012-05-16

申请人： Eugene Yi-Shan Ma ,  Charles M. Marshall

发明人： Eugene Yi-Shan Ma ,  Charles M. Marshall

IPC分类号： H01S3/10 ,  H01S5/14 ,  G02B5/28 ,  H01S3/106 ,  H01S5/024 ,  H01S5/028 ,  H01S5/34

CPC分类号： H01S5/068 ,  B82Y20/00 ,  G02B5/288 ,  H01S3/1062 ,  H01S5/02446 ,  H01S5/028 ,  H01S5/141 ,  H01S5/3401

摘要： A tunable laser has a solid state laser medium having an optical gain region and generates coherent radiation through a facet. A lens collects the coherent radiation and generates a collimated light beam. Components of an external cavity include a reflective surface and an optical filter, the reflective surface reflecting the collimated beam back to the lens and the laser medium, the optical filter positioned between the reflective surface and the lens and having two surfaces with a thermally tunable optical transmission band within the optical gain region of the laser medium. The optical filter (1) transmits a predominant portion of the collimated beam at a desired wavelength of operation, and (2) specularly reflects a remaining portion of the collimated beam from each surface, the collimated beam being incident on the optical filter such that the reflected collimated beams propagate at a non-zero angle with respect to the incident collimated beam.

摘要翻译： 可调谐激光器具有具有光学增益区域的固态激光介质，并通过刻面产生相干辐射。 透镜收集相干辐射并产生准直光束。 外部空腔的部件包括反射表面和滤光器，反射表面将准直光束反射回透镜和激光介质，光学滤光器位于反射表面和透镜之间，并且具有两个具有热可调光学的表面 在激光介质的光学增益区域内的传输带。 光学滤波器（1）以所需的操作波长发射准直光束的主要部分，（2）镜面反射来自每个表面的准直光束的剩余部分，准直光束入射到滤光器上，使得 反射的准直光束相对于入射准直光束以非零角度传播。

公开(公告)号：US20130182732A1

公开(公告)日：2013-07-18

申请号：US13624129

申请日：2012-09-21

申请人： Universitaet Stuttgart Institut fuer Strahlwerkzeuge

发明人： Marwan Abdou Ahmed ,  Andreas Voss

IPC分类号： H01S5/068

CPC分类号： H01S5/068 ,  H01S3/08009 ,  H01S3/08031 ,  H01S5/141 ,  H01S5/4062 ,  H01S5/4081 ,  H01S5/4087

摘要： To improve a laser system comprising at least one externally stabilizable semiconductor laser, from the laser active zone of which a laser radiation field can be coupled oute, and a feedback element, disposed externally in the laser radiation field, which couples out, from the laser radiation field, a feedback radiation field having a defined wavelength and bandwidth, and couples back same into the active laser zone for determining the wavelength and bandwidth of the laser radiation field, in such a way that the wavelength stabilization may be achieved more cost-effectively, it is proposed that the feedback element is a resonant waveguide grating which reflects back a portion of the laser radiation field lying within an angular acceptance range.

摘要翻译： 为了改善包括至少一个可外部稳定的半导体激光器的激光系统，其激光辐射场可以耦合到其外部的激光活动区域，以及设置在激光辐射场外部的反馈元件，其从激光器耦合出来 辐射场，具有确定的波长和带宽的反馈辐射场，并将其耦合到有源激光区域中，以确定激光辐射场的波长和带宽，使得波长稳定可以更具成本效益地实现 提出反馈元件是将位于角度接收范围内的激光辐射场的一部分反射的谐振波导光栅。

公开(公告)号：US08023541B2

公开(公告)日：2011-09-20

申请号：US12093076

申请日：2006-09-13

申请人： Kazuko Nishimura ,  Hiroshi Kimura

发明人： Kazuko Nishimura ,  Hiroshi Kimura

IPC分类号： H01S3/00 ,  H01S3/04

CPC分类号： H01S5/042 ,  H01S5/0612 ,  H01S5/068 ,  H01S5/183 ,  H03F3/08 ,  H04B10/504

摘要： An optical transmission circuit includes a light emitting device (10) having different temperature characteristics at low temperature and high temperature (e.g., a VCSEL (Vertical Cavity Surface Emitting Laser), differential switch transistors (M1, M2) for driving the light emitting device (10), the differential switch transistors having sources connected to each other and drains connected to the light emitting device (10) and a power supply, respectively, a bias current source (11) for causing a bias current to flow, a modulated current source (12) for causing a modulated current to flow, and a temperature compensation current source (20) for controlling currents of the bias current source (11) and the modulated current source (12) so as to compensate for both temperature characteristics at low temperature and temperature characteristics at high temperature of the light emitting device (10).

摘要翻译： 光传输电路包括在低温和高温下具有不同温度特性的发光器件（例如，VCSEL（垂直腔表面发射激光器）），用于驱动发光器件的差分开关晶体管（M1，M2） 10），差分开关晶体管具有彼此连接的源极和连接到发光器件（10）的漏极和电源，分别用于使偏置电流流动的偏置电流源（11），调制电流源 （12），用于使调制电流流动;以及温度补偿电流源（20），用于控制偏置电流源（11）和调制电流源（12）的电流，以便补偿低温下的两个温度特性 和发光装置（10）的高温下的温度特性。

公开(公告)号：US07453100B2

公开(公告)日：2008-11-18

申请号：US10228136

申请日：2002-08-27

申请人： Masaki Funabashi ,  Ryosuke Yatsu ,  Akihiko Kasukawa

发明人： Masaki Funabashi ,  Ryosuke Yatsu ,  Akihiko Kasukawa

IPC分类号： H01L33/00

CPC分类号： H01S5/12 ,  H01S5/0224 ,  H01S5/02284 ,  H01S5/02415 ,  H01S5/068 ,  H01S5/2275

摘要： A DFB laser assembly including both a DFB laser device, with a buried heterostructure having a cavity length of 400 μm, a differential resistance of 4Ω, an emission wavelength of 1550 nm, and a thermal resistance of 50K/watt or less, and a heat sink mounting the DFB laser device in a junction-down structure so that the DFB laser device has a wavelength/current coefficient at 5 picometers/milli-ampere or less.

摘要翻译： DFB激光器组件包括DFB激光器件，具有400μm的腔长度的掩埋异质结构，40mega的差分电阻，1550nm的发射波长和50K /瓦或更低的热阻，以及热 将DFB激光器件沉入安装在结合下降结构中，使得DFB激光器件的波长/电流系数为5皮米/毫安或更小。

公开(公告)号：US20070183465A1

公开(公告)日：2007-08-09

申请号：US10552967

申请日：2004-04-14

申请人： Tommy Mullane ,  David McDonald ,  Thomas Farrell ,  Ciaran Polley ,  Peter Oconnor

发明人： Tommy Mullane ,  David McDonald ,  Thomas Farrell ,  Ciaran Polley ,  Peter Oconnor

IPC分类号： H01S3/10

CPC分类号： H01S5/068 ,  H01S5/0014 ,  H01S5/0617 ,  H01S5/0625

摘要： The invention relates to a method and system for providing a set of continuous tuning regions from a discontinuously tuned laser, by providing a wavelength reference having at least first and second resonance peaks, sweeping the laser across a pre-determined wavelength range of the wavelength reference, and defining, within the laser sweep, one or more regions of continuous tuning operation of the laser, each of the regions corresponding to a response of the laser between adjacent resonance peaks of the wavelength reference. The advantage of the invention is that it provides a way for stitching together continuous regions of a multi-section tunable laser in an efficient and accurate manner.

摘要翻译： 本发明涉及一种用于通过提供具有至少第一和第二共振峰值的波长参考来提供来自不连续调谐的激光器的一组连续调谐区域的方法和系统，将激光扫过波长参考的预定波长范围 并且在所述激光扫描内限定所述激光器的连续调谐操作的一个或多个区域，所述区域中的每一个对应于所述激光在所述波长参考的相邻共振峰之间的响应。 本发明的优点在于它提供了一种以有效和准确的方式将多段可调谐激光器的连续区域拼接在一起的方式。

公开(公告)号：US07248795B2

公开(公告)日：2007-07-24

申请号：US11497083

申请日：2006-08-01

申请人： Makibi Nakamura

发明人： Makibi Nakamura

IPC分类号： G03B13/36

CPC分类号： H04N5/2256 ,  G02B5/32 ,  G02B7/32 ,  G02B7/36 ,  G03B3/10 ,  G03B13/34 ,  G03B13/36 ,  G03B17/02 ,  G03B21/26 ,  G03H1/2249 ,  G03H2001/2218 ,  G03H2001/2221 ,  G03H2001/2244 ,  G03H2210/20 ,  H01S5/068 ,  H01S5/06825 ,  H04N5/23212

摘要： Image projection apparatus wherein, a focusing lens is controlled when a shutter is operated so that a contrast signal, obtained when a luminance signal from a camera signal processing circuit is supplied to an auto focusing detection circuit, may become maximum. A laser diode is driven to generate laser beams that are condensed into parallel laser beams by a condenser. These parallel laser beams are applied to a hologram plate and thereby diffracted. The diffracted laser beams interfere with each other, to produce a hologram image with sufficient contrast. Therefore, satisfactory focusing can be made in an auto focus mode of the contrast detection system or in a manual focus mode.

摘要翻译： 图像投影装置，其中，当快门被操作时控制聚焦透镜，使得当来自相机信号处理电路的亮度信号被提供给自动聚焦检测电路时获得的对比度信号可能变得最大。 激光二极管被驱动以产生通过冷凝器冷凝成平行激光束的激光束。 将这些平行的激光束施加到全息板上，从而衍射。 衍射激光束彼此干涉，产生具有足够对比度的全息图像。 因此，可以在对比度检测系统的自动聚焦模式或手动对焦模式中进行令人满意的聚焦。