专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

31. 发明授权

US06580733B1 Analog pulse position modulation in harmonically mode-locked lasers 失效
标题翻译：谐波锁相激光器中的模拟脉冲位置调制
公开(公告)号：US06580733B1
公开(公告)日：2003-06-17
申请号：US09448627
申请日：1999-11-24
申请人： Robert E. Peale , Andrei V. Muravjov , Remco C. Strijbos , Chris J. Fredricksen , Sandra H. Withers
发明人： Robert E. Peale , Andrei V. Muravjov , Remco C. Strijbos , Chris J. Fredricksen , Sandra H. Withers
IPC分类号： H01S310
CPC分类号： H01S5/0625 , H01S5/0427 , H01S5/06253 , H01S5/0657 , H01S5/0687
摘要： Analog pulse position modulation of pulsed emission from a laser, which is actively and harmonically mode-locked. The laser requires: a body of an active gain medium; means for changing the gain as a function of a controllable parameter; harmonically and actively mode-locking the laser by fast periodic changes of said parameter; and superimposing slower changes on the parameter whereby the fast periodic parameter changes can be continuously shifted between the peak and the shoulder of the gain-vs-parameter curve. As proof of concept, electric control of the separation between two interleaved pulse trains from a far-infrared (1.5-4 THz) p-Ge laser, which is actively mode-locked by rf gain modulation at the second harmonic of the roundtrip frequency, is demonstrated by changing the electric bias at the rf contacts. A suggested application is telemetry using analog pulse position modulation.
摘要翻译：来自激光器的脉冲发射的模拟脉冲位置调制，其是主动和谐的锁模。激光器需要：主体增益介质; 用于根据可控参数改变增益的装置; 通过所述参数的快速周期性变化来谐波和主动地模式锁定激光器; 并且在参数上叠加较慢的变化，从而可以在增益对参数曲线的峰值和肩部之间连续地移动快速周期性参数变化。作为概念证明，通过在往返频率的二次谐波处的rf增益调制被主动锁定的远红外（1.5-4THz）p-Ge激光器的两个交错脉冲串之间的间隔的电控制，通过改变rf触点的电偏差来证明。建议的应用是使用模拟脉冲位置调制进行遥测。

32. 发明授权

US06215805B1 Q-switched semiconductor laser 有权
标题翻译： Q开关半导体激光器
公开(公告)号：US06215805B1
公开(公告)日：2001-04-10
申请号：US09155583
申请日：1998-09-29
申请人： Bernd Sartorius , Martin Moehrle
发明人： Bernd Sartorius , Martin Moehrle
IPC分类号： H01S500
CPC分类号： H01S5/0625 , H01S3/082 , H01S5/0607 , H01S5/0608 , H01S5/0615 , H01S5/06253 , H01S5/06256 , H01S5/06258
摘要： A Q-switched semiconductor laser is supposed to facilitate high-frequency laser modulation with low currents or voltage ranges. According to the invention, a laser of this type consists of at least one continually pumped active medium and two optically coupled resonators at least one of which is passive, both resonators having different mode combs corresponding to the Nonius principle, at least one resonator mirror taking the form of a reflector with strongly dispersive reflection characteristics in the laser wavelength range selected by the double resonator, the index of refraction of the passive resonator and/or reflector capable of being adjusted electronically. With this device, the reflectivity of the laser wavelength can be adjusted in such a way that, with a fixed effective amplification by electrical modulation of the reflectivity of the resonator reflector with strongly dispersive reflection characteristics, the laser threshold can be raised or lowered so as to switch the semiconductor laser on or off.
摘要翻译： Q开关半导体激光器应该以低电流或电压范围促进高频激光调制。根据本发明，这种类型的激光器包括至少一个连续泵浦的有源介质和两个光耦合谐振器，其中至少一个是无源的，具有对应于Nonius原理的不同模式梳的两个谐振器，至少一个谐振镜在双谐振器选择的激光波长范围内具有强烈色散反射特性的反射器的形式，能够被电子调节的无源谐振器和/或反射器的折射率。利用该装置，可以以这样的方式调整激光波长的反射率，即通过利用具有强烈色散反射特性的谐振器反射体的反射率的电调制的固定有效放大，可以提高或降低激光阈值，以便打开或关闭半导体激光器。

33. 发明授权

US09780525B2 Optoelectronic oscillator 有权
公开(公告)号：US09780525B2
公开(公告)日：2017-10-03
申请号：US14900081
申请日：2014-06-12
申请人： Technische Universität Berlin
发明人： Dejan Arsenijevic , Moritz Kleinert , Dieter Bimberg, I
IPC分类号： H01S3/098 , H01S5/065 , H01S3/11 , H01S5/062 , H01S5/0625 , H01S5/042 , H01S5/068 , H03K3/42
CPC分类号： H01S5/0657 , H01S3/11 , H01S3/1112 , H01S3/1115 , H01S5/0428 , H01S5/06223 , H01S5/06253 , H01S5/0656 , H01S5/06817 , H03K3/42
摘要： An optoelectronic oscillator for generating an optical and/or electric pulse comb, comprising a monolithically integrated passively mode-coupled semiconductor laser and an optical feedback loop which guides a part of the optical radiation of the semiconductor laser and feeds said part back into the semiconductor laser as feedback pulses. Without the influence of the feedback pulses, the semiconductor laser would emit comb-like optical pulses, hereafter referred to as primary pulses, and in the event of an influence, emits comb-like output pulses which have been influenced by the feedback pulses, said output pulses having a lower temporal jitter or less phase noise than the primary pulses. The feedback loop is damped between 27.5 and 37.5 dB, and the time lag of the feedback loop is selected such that each feedback pulse is incident within the temporal half-value width of each subsequent primary pulse.

34. 发明申请

US20160149377A1 OPTOELECTRONIC OSCILLATOR 有权
标题翻译：光电振荡器
公开(公告)号：US20160149377A1
公开(公告)日：2016-05-26
申请号：US14900081
申请日：2014-06-12
申请人： Technische Universität Berlin
发明人： Dejan ARSENIJEVIC , Moritz KLEINERT , Dieter BIMBERG, I
IPC分类号： H01S5/065 , H01S3/11
CPC分类号： H01S5/0657 , H01S3/11 , H01S3/1112 , H01S3/1115 , H01S5/0428 , H01S5/06223 , H01S5/06253 , H01S5/0656 , H01S5/06817 , H03K3/42
摘要： An optoelectronic oscillator for generating an optical and/or electric pulse comb, comprising a monolithically integrated passively mode-coupled semiconductor laser and an optical feedback loop which guides a part of the optical radiation of the semiconductor laser and feeds said part back into the semiconductor laser as feedback pulses. Without the influence of the feedback pulses, the semiconductor laser would emit comb-like optical pulses, hereafter referred to as primary pulses, and in the event of an influence, emits comb-like output pulses which have been influenced by the feedback pulses, said output pulses having a lower temporal jitter or less phase noise than the primary pulses. The feedback loop is damped between 27.5 and 37.5 dB, and the time lag of the feedback loop is selected such that each feedback pulse is incident within the temporal half-value width of each subsequent primary pulse.
摘要翻译：一种用于产生光学和/或电脉冲梳的光电子振荡器，包括单片集成被动模式耦合的半导体激光器和光反馈环路，其引导半导体激光器的一部分光辐射并将所述部件反馈到半导体激光器作为反馈脉冲。在没有反馈脉冲的影响的情况下，半导体激光器将发出梳状光脉冲，此后称为主脉冲，并且在影响的情况下，发出受到反馈脉冲影响的梳状输出脉冲，所述输出脉冲具有比初级脉冲更低的时间抖动或更低的相位噪声。反馈回路在27.5和37.5 dB之间被阻尼，并且选择反馈回路的时滞，使得每个反馈脉冲入射到每个后续初级脉冲的时间半值宽度内。

35. 发明申请

US20150131425A9 OPTICAL OSCILLATION DEVICE AND RECORDING APPARATUS 审中-公开
标题翻译：光学振荡装置和记录装置
公开(公告)号：US20150131425A9
公开(公告)日：2015-05-14
申请号：US13545688
申请日：2012-07-10
申请人： Goro Fujita , Tsutomu Maruyama , Masaru Kuramoto , Hideki Watanabe
发明人： Goro Fujita , Tsutomu Maruyama , Masaru Kuramoto , Hideki Watanabe
IPC分类号： G11B7/126 , G11B7/1374 , H01S5/065 , H01S5/0625 , H01S5/026 , G11B7/1275 , H01S5/34 , H01S5/343
CPC分类号： G11B7/126 , B82Y20/00 , G11B7/127 , G11B7/1275 , G11B7/128 , G11B2007/00457 , H01S5/0261 , H01S5/0602 , H01S5/06253 , H01S5/06255 , H01S5/0658 , H01S5/34333
摘要： Provided is a recording apparatus including a self-excited oscillation semiconductor laser that has a double quantum well separate confinement heterostructure and includes a saturable absorber section to which a negative bias voltage is applied and a gain section into which a gain current is injected, an optical separation unit, an objective lens, a light reception element, a pulse detection unit, a reference signal generation unit, a phase comparison unit, a recording signal generation unit, and a control unit.
摘要翻译：提供了一种记录装置，其包括具有双量子阱分离限制异质结构的自激振荡半导体激光器，并且包括施加负偏置电压的可饱和吸收部分和注入增益电流的增益部分，光学分离单元，物镜，光接收元件，脉冲检测单元，参考信号生成单元，相位比较单元，记录信号生成单元和控制单元。

36. 发明授权

US08644711B2 Apparatus and method for OLT and ONU for wavelength agnostic wavelength-division multiplexed passive optical networks 有权
标题翻译：用于波长不可知波分复用无源光网络的OLT和ONU的装置和方法
公开(公告)号：US08644711B2
公开(公告)日：2014-02-04
申请号：US12445935
申请日：2007-07-06
申请人： Byoung-Whi Kim , Manyong Park , Woo-Ram Lee , Bong-Tae Kim , Seung-Hyun Cho , Jie-Hyun Lee , Geon Jeong , Chulyoung Kim , Dae-Ung Kim , Byung-Yong Kang
发明人： Byoung-Whi Kim , Manyong Park , Woo-Ram Lee , Bong-Tae Kim , Seung-Hyun Cho , Jie-Hyun Lee , Geon Jeong , Chulyoung Kim , Dae-Ung Kim , Byung-Yong Kang
IPC分类号： H04J14/02 , H04B10/40
CPC分类号： H01S5/5018 , H01S5/0427 , H01S5/06253 , H01S5/06812 , H01S5/50 , H04J14/02 , H04J14/0227 , H04J14/0246 , H04J14/0247 , H04J14/025 , H04J14/0252 , H04J14/0282 , H04J2014/0253
摘要： In a Wavelength-Division-Multiplexed Passive Optical Network (WDM-PON) utilizing a conventional downstream optical signal reusing method, there is an inventory problem that different optical transmitter types need to be provided for the operation, management, replacement, etc. of a system. A WDM-PON system according to the present invention, includes: a seed light (SL) unit generating a seed light whose wavelength intervals and center wavelengths are adjusted using at least one seed light source; an optical line terminal (OLT) receiving the wavelength-multiplexed seed light from the seed light unit, transmitting a downstream optical signal to a subscriber of the WDM-PON, and receiving a upstream optical signal from the subscriber; and an optical network unit (ONU) receiving the downstream optical signal from the OLT, flattening and modulating the downstream optical signal with upstream data so that the downstream optical signal is reused for carrying upstream data. It is possible to improve the quality and reliability of downstream transmission by sufficiently increasing an extinction ratio, and improve the quality and reliability of upstream transmission by sufficiently flattening an input downstream optical signal in a semiconductor optical amplifier.
摘要翻译：在利用传统的下行光信号重用方法的波分复用无源光网络（WDM-PON）中，存在一种库存问题，需要为不同的光发射机类型提供不同的光发射机类型的操作，管理，替换等系统。根据本发明的WDM-PON系统包括：种子光（SL）单元，其生成使用至少一个种子光源调整其波长间隔和中心波长的种子光; 接收来自种子光单元的波长复用种子光的光线路终端（OLT）向下行光信号发送WDM-PON的用户，并从用户接收上行光信号; 以及从OLT接收下行光信号的光网络单元（ONU），用下游数据对下行光信号进行平坦化和调制，使下游光信号重新用于承载上行数据。通过充分提高消光比可以提高下游传输的质量和可靠性，通过在半导体光放大器中充分平坦化输入下行光信号，提高上行传输的质量和可靠性。

37. 发明申请

US20110007765A1 LASER DIODE DEVICE, METHOD OF DRIVING THE SAME, AND LASER DIODE APPARATUS 有权
标题翻译：激光二极管装置，其驱动方法和激光二极管装置
公开(公告)号：US20110007765A1
公开(公告)日：2011-01-13
申请号：US12828403
申请日：2010-07-01
申请人： Masaru Kuramoto , Tomoyuki Oki , Tomoya Sugahara , Hiroyuki Yokoyama
发明人： Masaru Kuramoto , Tomoyuki Oki , Tomoya Sugahara , Hiroyuki Yokoyama
IPC分类号： H01S5/34
CPC分类号： H01S5/06216 , B82Y20/00 , H01S5/0602 , H01S5/06253 , H01S5/2009 , H01S5/34333
摘要： An ultrashort pulse and ultrahigh power laser diode device capable of outputting pulse laser light having higher peak power with a simple composition and a simple structure is provided. The laser diode device includes: a laminated structure composed of a first compound semiconductor layer containing n-type impurity, an active layer having a quantum well structure, and a second compound semiconductor layer containing p-type impurity; a first electrode electrically connected to the first compound semiconductor layer; and a second electrode electrically connected to the second compound semiconductor layer, wherein the second compound semiconductor layer is provided with an electron barrier layer having a thickness of 1.5*10−8 m or more, and driving is made by a pulse current having a value 10 or more times as large as a threshold current value.
摘要翻译：提供了一种能够以简单的组成和简单结构输出具有较高峰值功率的脉冲激光的超短脉冲和超高功率激光二极管装置。激光二极管装置包括：由包含n型杂质的第一化合物半导体层，具有量子阱结构的有源层和含有p型杂质的第二化合物半导体层构成的层叠结构; 电连接到第一化合物半导体层的第一电极; 和与第二化合物半导体层电连接的第二电极，其中第二化合物半导体层设置有厚度为1.5×10 -8 m以上的电子势垒层，并且通过具有值的脉冲电流进行驱动大于阈值电流值的10倍以上。

38. 发明授权

US07502394B2 System and method for modulating a semiconductor laser 失效
标题翻译：用于调制半导体激光器的系统和方法
公开(公告)号：US07502394B2
公开(公告)日：2009-03-10
申请号：US11298367
申请日：2005-12-08
申请人： Martin H Hu , Nobuhiko Nishiyama , Chung-En Zah
发明人： Martin H Hu , Nobuhiko Nishiyama , Chung-En Zah
IPC分类号： H01S3/10 , H01S3/13 , H01S3/00
CPC分类号： H04N9/3129 , H01S5/005 , H01S5/0092 , H01S5/06213 , H01S5/06251 , H01S5/06253 , H01S5/06256 , H04B10/54
摘要： Both a system and method are provided for modulating the intensity of an output beam generated by semiconductor laser. The exemplary system includes a source of pulsating current connected to the laser that generates a pulsating beam of laser light, an external modulator having an input that receives the pulsating beam, and an output controlled by pulsating control signal, wherein the output beam transmitted by the external modulator output is modulated by changing a relative phase angle between the pulsating current powering the laser, and the control signal of the external modulator over time. The external modulator may be an intensity-type modulator whose output is controlled by a gate signal having a constant phase, and the source of pulsating current powering the laser may be variable phase in order to modulate the output beam with an external modulator having a simple structure. Both the system and method are advantageously compatible with DFB lasers, and avoid wavelength drift and the consequent thermally induced patterning effect by powering the laser with a pulsating current having a constant duty cycle.
摘要翻译：提供了一种用于调制由半导体激光器产生的输出光束的强度的系统和方法。示例性系统包括连接到激光器的脉冲电流源，其产生脉冲激光束，外部调制器，其具有接收脉动光束的输入端，以及由脉动控制信号控制的输出，其中由通过改变为激光供电的脉动电流与外部调制器的控制信号之间的相对相位角随时间而调制外部调制器输出。外部调制器可以是强度型调制器，其输出由具有恒定相位的栅极信号控制，为激光供电的脉动电流源可以是可变相位，以便用具有简单的外部调制器调制输出光束结构体。系统和方法都有利地与DFB激光器兼容，并且通过用具有恒定占空比的脉动电流为激光器供电来避免波长漂移和随之而来的热诱导图案化效应。

39. 发明申请

US20090022183A1 Intensity modulation in wavelength converting optical package 失效
标题翻译：波长转换光学封装中的强度调制
公开(公告)号：US20090022183A1
公开(公告)日：2009-01-22
申请号：US11880289
申请日：2007-07-20
申请人： Jacques Gollier
发明人： Jacques Gollier
IPC分类号： H01S3/10
CPC分类号： H04N9/3129 , H01S5/005 , H01S5/0078 , H01S5/0092 , H01S5/06253 , H01S5/06256
摘要： Particular embodiments of the present invention relate generally to methods of controlling an optical package comprising a semiconductor laser, a spectral filter, and a wavelength conversion device. The spectral filter and the wavelength conversion device collectively define a wavelength transfer function comprising a transmission bandwidth component attributable to the spectral filter and a conversion bandwidth component attributable to the wavelength conversion device. The transmission bandwidth component of the wavelength transfer function is less than one free spectral range of the semiconductor laser. The method comprises directing the native laser output through the spectral filter and the wavelength conversion device and tuning the semiconductor laser to modulate the intensity of a wavelength-converted laser output of the optical package by shifting the native wavelength spectrum by less than one free spectral range of the semiconductor laser. Additional embodiments are disclosed and claimed.
摘要翻译：本发明的具体实施方案一般涉及控制包括半导体激光器，光谱滤波器和波长转换装置的光学封装的方法。光谱滤波器和波长转换装置共同定义了包括归因于频谱滤波器的传输带宽分量和归因于波长转换装置的转换带宽分量的波长传递函数。波长传递函数的传输带宽分量小于半导体激光器的一个自由光谱范围。该方法包括通过频谱滤波器和波长转换装置引导天然激光输出，并调谐半导体激光器，以通过将天然波长光谱移位小于一个自由光谱范围来调制光学封装的波长转换的激光输出的强度的半导体激光器。公开并要求保护附加实施例。

40. 发明授权

US07330490B2 Optical wavelength converter and image forming apparatus using the same 失效
标题翻译：光波长转换器及使用其的成像装置
公开(公告)号：US07330490B2
公开(公告)日：2008-02-12
申请号：US11474998
申请日：2006-06-27
申请人： Yukio Furukawa , Takashi Yuasa
发明人： Yukio Furukawa , Takashi Yuasa
IPC分类号： H01S3/10 , H01S3/00
CPC分类号： H01S5/06256 , G02F1/3532 , G02F1/3775 , G02F2202/20 , H01S5/005 , H01S5/0092 , H01S5/06253 , H01S5/0683 , H04N9/3129
摘要： An optical wavelength converter includes a distributed Bragg reflector laser having an active area, a phase area, and a distributed Bragg reflector area in which a distributed Bragg reflector is formed; an optical wavelength conversion device for receiving fundamental wave light emitted from said distributed Bragg reflector laser and outputting second harmonic wave light of the fundamental wave light; and a control circuit for controlling an emission wavelength and a light output by controlling an injection current to be injected into the distributed Bragg reflector laser for each period. The control circuit controls the injection current to be injected into the distributed Bragg reflector laser while satisfying a condition for controlling a light output mode of the distributed Bragg reflector laser so that light energy to be inputted into the optical wavelength conversion device in each period is constant and satisfying a condition for injecting a current into each of an active area, a phase area, and a distributed Bragg reflector area in each of periods in a mode of constant amount of generated heat so that an injection current-emission wavelength characteristic in the distributed Bragg reflector area is constant.
摘要翻译：光波长转换器包括分布布拉格反射激光器，其具有有源区域，相位区域和分布式布拉格反射器区域，其中形成分布式布拉格反射器; 光波长转换装置，用于接收从所述分布布拉格反射激光器发出的基波光并输出基波光的二次谐波; 以及控制电路，用于通过控制每个时间段内要喷射到分布式布拉格反射器激光器中的喷射电流来控制发射波长和光输出。控制电路控制喷射到分布式布拉格反射体激光器中的注入电流，同时满足用于控制分布布拉格反射器激光器的光输出模式的条件，使得在每个周期中输入到光波长转换装置的光能是恒定的并且满足用于以恒定量的发生热量的模式在每个周期中的有源区域，相位区域和分布式布拉格反射器区域中的每一个中注入电流的条件，使得分布式发射器件中的注入电流 - 发射波长特性布拉格反射器面积是恒定的。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式