公开(公告)号：US20040263940A1

公开(公告)日：2004-12-30

申请号：US10609306

申请日：2003-06-27

发明人： Bryan Comeau ,  Philip Rombult ,  Jeffrey Knox

IPC分类号： G02F001/01 ,  G02B026/00

CPC分类号： H04N5/33

摘要： An illumination modulator correction system is disclosed for adjusting the operational parameters of an illumination modulator in an imaging system. The correction system includes a modulator pattern unit for providing a test pattern on the illumination modulator, a modulator adjustment unit for permitting an actuation voltage on the illumination modulator to be changed through a range of actuation voltage values, a detector for receiving a modulated illumination field from the illumination modulator, a sampling unit for determining at least one sample value for at least one area of the modulated illumination field, and an evaluation unit for determining a minimum sample value within the range of actuation voltage values of the illumination modulator.

摘要翻译： 公开了用于调整成像系统中的照明调制器的操作参数的照明调制器校正系统。 校正系统包括用于在照明调制器上提供测试图案的调制器图案单元，用于允许通过一系列致动电压值改变照明调制器上的致动电压的调制器调节单元，用于接收调制照明场的检测器 来自照明调制器的采样单元，用于确定调制照明场的至少一个区域的至少一个采样值;以及评估单元，用于确定照明调制器的致动电压值范围内的最小采样值。

公开(公告)号：US20040240030A1

公开(公告)日：2004-12-02

申请号：US10129356

申请日：2002-08-06

发明人： Christoph Glingener ,  Erich Gottwald

IPC分类号： G02F001/01

CPC分类号： G02F1/0123 ,  H04B10/505 ,  H04B10/50575

摘要： A method and system for optimization of an optical transmissions signal which is modulated with a binary data signal, wherein a control device ensures that the operating point and the modulation signal of a Mach-Zehnder modulator are set optimally, with the fundamental frequency and/or the first harmonic frequency of the transmission signal being selected for this purpose, and an optimum setting is reached when the amplitude of the fundamental frequency has reached a maximum value and the amplitude of the harmonic frequency has reached a minimum value.

摘要翻译： 一种用于利用二进制数据信号调制的光传输信号的优化的方法和系统，其中控制装置确保马赫 - 曾德调制器的工作点和调制信号被最优地设置，其中基频和/或 为此，选择发送信号的一次谐波频率，当基频的振幅达到最大值且谐波频率的振幅达到最小值时，达到最佳设定。

公开(公告)号：US20040228005A1

公开(公告)日：2004-11-18

申请号：US10810446

申请日：2004-03-25

发明人： Edward Raymond Dowski JR.

IPC分类号： G02F001/01 ,  G01B009/02 ,  G02B013/08

CPC分类号： G02B27/0025 ,  G02B5/3083 ,  H04N5/217 ,  H04N5/2254

摘要： An optical system with mechanical adjustment provides for the rotation and/or translation of one or more optical phase filters to variably select an extended depth of field, aberration-tolerance, and/or anti-aliasing properties of an optical imaging system. By adjusting the amount of phase induced on the wavefront, a user may select image quality selectively. The system may further automatically counter change of focus and/or aperture to maintain substantially constant image properties. Typically, two phase filters are used and moved concurrently to achieve desired image properties.

摘要翻译： 具有机械调节的光学系统提供一个或多个光学相位滤波器的旋转和/或平移，以可变地选择光学成像系统的扩展景深，像差容差和/或抗混叠特性。 通过调整在波前引起的相位量，用户可以选择性地选择图像质量。 该系统可以进一步自动地对准焦点和/或光圈的变化以维持基本上恒定的图像特性。 通常，使用两个相位滤波器并且同时移动以实现期望的图像特性。

公开(公告)号：US20040196660A1

公开(公告)日：2004-10-07

申请号：US10488060

申请日：2004-02-27

发明人： Mamoru Usami

IPC分类号： G02F001/01

CPC分类号： H01S1/02 ,  G01N21/3581

摘要： A terahertz light generation element 8 emits terahertz light as excitation pulse light is emitted onto an area between electrically conductive films 32 and 33 formed on a substrate 31 while a bias voltage is applied between the electrically conductive films 32 and 33. A terahertz light detection unit 13 outputs an electrical signal corresponding to the intensity level of the electric field of the terahertz light entering the terahertz light detection unit. The polarity of the electric field of the terahertz light is modulated by inverting the polarity of the bias voltage applied between the pair of electrically conductive films. By using a reference signal synchronous with the polarity inversion of the bias voltage applied between the pair of electrically conductive films, the electrical signal provided by the terahertz light detection unit 13 is amplified at a lock-in amplifier 24.

摘要翻译： 当在导电膜32和33之间施加偏置电压时，激发脉冲光发射到形成在基板31上的导电膜32和33之间的区域上，太赫兹光发生元件8发射太赫兹光。太赫兹光检测单元 13输出与进入太赫兹光检测单元的太赫兹光的电场的强度水平对应的电信号。 太赫兹光的电场的极性通过反转施加在一对导电膜之间的偏置电压的极性而被调制。 通过使用与施加在一对导电膜之间的偏置电压的极性反转同步的参考信号，由太赫兹光检测单元13提供的电信号在锁定放大器24处被放大。

公开(公告)号：US20040130769A1

公开(公告)日：2004-07-08

申请号：US10690486

申请日：2003-10-20

发明人： Keyvan Sayyah ,  David M. Pepper ,  Peter D. Brewer ,  Anson Au

IPC分类号： G02F001/01

CPC分类号： H04B10/112 ,  G01S17/74 ,  G02B5/12 ,  H01L21/6835 ,  H01L24/18 ,  H01L24/82 ,  H01L24/96 ,  H01L27/14647 ,  H01L2221/6835 ,  H01L2224/24051 ,  H01L2224/24226 ,  H01L2924/01078 ,  H01L2924/12042 ,  H01L2924/12043 ,  H01L2924/1461 ,  H01L2924/30105 ,  H01L2924/3511 ,  H04B10/2587 ,  H01L2924/00

摘要： A conformal retro-modulator optical apparatus. The apparatus includes an array of multiple quantum well devices disposed in a thin array. A plastic support element is bonded to the thin array, the plastic support element having a thickness greater that of the thin array. The plastic support element is preferably plastic at elevated temperatures above room temperature, thereby allowing the plastic support element and the thin array of multiple well device disposed therein to conform to a predetermined shape, yet being rigid at room temperature.

摘要翻译： 一种共形逆光调制器光学装置。 该装置包括以薄阵列布置的多个量子阱装置的阵列。 塑料支撑元件结合到薄阵列，塑料支撑元件的厚度大于薄阵列的厚度。 塑料支撑元件优选在高于室温的高温下塑性，从而允许塑料支撑元件和设置在其中的多孔装置的薄阵列符合预定形状，但在室温下是刚性的。

公开(公告)号：US20040114844A1

公开(公告)日：2004-06-17

申请号：US10617115

申请日：2003-07-10

发明人： Han-Lim Lee ,  Yun-Je Oh ,  Seong-Taek Hwang ,  Ji-Chai Jeong ,  Yong-Gyoo Kim

IPC分类号： G02F001/01 ,  G02B006/26

CPC分类号： H04B10/504 ,  H04B10/5165

摘要： Disclosed is a directly modulated distributed feedback laser diode optical transmitter using a vestigial side band modulation. The optical transmitter comprises an electric signal generator converting inputted signals into electric signals; a distributed feedback laser diode converting the electric signals into optical signals; and an optical tunable filter for setting a central wavelength configured to filter the optical signals using a central wavelength, perform a vestigial side band modulation of the optical signals by degenerating a determined band of the optical signals using central wavelength, and reduce the band width of the optical fibers, thereby improving the extinction ratio. By applying an optical tunable filter of a vestigial side band modulation type to an optical transmitter using a directly modulated distributed feedback laser diode, the band width of optical signals for a transmission can be reduced.

摘要翻译： 公开了一种使用残留边带调制的直接调制分布反馈激光二极管光发射机。 光发射机包括将输入信号转换为电信号的电信号发生器; 将电信号转换为光信号的分布式反馈激光二极管; 以及光学可调谐滤光器，用于设置中心波长，其配置为使用中心波长对光信号进行滤波，通过使用中心波长退化所确定的光信号的带宽来执行光信号的残留边带调制，并且减小 光纤，从而提高消光比。 通过使用直接调制的分布式反馈激光二极管将残留边带调制型的光可调滤波器应用于光发射机，可以减少用于传输的光信号的带宽。

公开(公告)号：US20040094698A1

公开(公告)日：2004-05-20

申请号：US10250454

申请日：2003-12-12

发明人： Masao Imaki ,  Syuhei Yamamoto ,  Youhei Mikami ,  Yoshihito Hirano ,  Makoto Satou ,  Kenji Masuda ,  Yasunori Nishimura ,  Yuji Masuyama

IPC分类号： G02F001/01 ,  G01J003/50 ,  H01J005/16

CPC分类号： H01S5/0687 ,  G01J9/00 ,  G02B1/02 ,  G02B5/3083 ,  G02B27/288 ,  H01S5/0612 ,  H01S5/0683

摘要： On a plate of birefringent crystal made of an LiNbO3 crystal or an LiTaO3 crystal, a conductive substance is adhered to the whole periphery of side surfaces of the plate that intersect an incident surface of a laser beam, thereby to form a wave plate. A polarizer is provided at the latter stage of the wave plate. A wavelength is monitored based on an output from the polarizer. With this arrangement, based on the use of the LiNbO3 crystal or the LiTaO3 crystal that can be manufactured by a large quantity at low cost, it is possible to obtain polarization characteristics and wavelength discrimination characteristics that are stable against environmental changes such as temperature and external stress, by suppressing the pyroelectric effect and the piezoelectric effect of these materials.

摘要翻译： 在由LiNbO 3晶体或LiTaO 3晶体制成的双折射晶体平板上，导电物质附着在与激光束的入射表面相交的板的侧表面的整个周边上，从而形成波片。 在波片的后段提供偏振器。 基于偏振器的输出监视波长。 通过这种布置，基于使用可以以低成本大量制造的LiNbO 3晶体或LiTaO 3晶体，可以获得对环境变化如温度和外部稳定的偏振特性和波长鉴别特性 应力，通过抑制这些材料的热电效应和压电效应。

公开(公告)号：US20040027634A1

公开(公告)日：2004-02-12

申请号：US10635080

申请日：2003-08-06

发明人： Aaron Bond ,  John Kai Andersen ,  Ram Jambunathan

IPC分类号： G02F001/01

CPC分类号： G02F1/025 ,  G02F1/0123 ,  G02F2203/05

摘要： An exemplary monolithic stabilized monolithic transmissive active optical device, such as an electroabsorption modulator (EAM), a variable optical attenuator (VOA), or a semiconductor optical amplifier (SOA), with an output optical tap, is formed from: a substrate; a waveguide layer; a semiconductor layer. The waveguide layer is coupled to the substrate and includes an active medium, which interacts with a predetermined wavelength of light, and is responsive to an electric signal. The electric signal is applied between the substrate and the semiconductor layer. The waveguide layer includes an output optical tap section and an active section adjacent to the output optical tap section. These sections include portions of the active medium. Further embodiments of the present invention incorporate temperature as well as bias control to improve performance of exemplary monolithic transmissive active optical devices.

摘要翻译： 具有输出光学抽头的示例性的单片式稳定单片透射有源光学器件，例如电吸收调制器（EAM），可变光衰减器（VOA）或半导体光放大器（SOA））由以下基底形成： 波导层; 半导体层。 波导层耦合到衬底并且包括与预定波长的光相互作用并且响应于电信号的有源介质。 电信号施加在基板和半导体层之间。 波导层包括输出光抽头部分和邻近输出光抽头部分的有源部分。 这些部分包括活性介质的部分。 本发明的另外的实施例包括温度和偏压控制以改善示例性单片透射有源光学器件的性能。

公开(公告)号：US20040027633A1

公开(公告)日：2004-02-12

申请号：US10214063

申请日：2002-08-07

发明人： Thomas James Miller ,  James Kevin Plourde

IPC分类号： G02F001/01

CPC分类号： G02F1/0121 ,  G02F2001/0157

摘要： An impedance matching circuit for an electroabsorption optical modulator addresses the conflicting concerns of being located electrically nullnearnull the modulator, while being disposed on a separate piece part, by using an inductor as a low frequency impedance matching component, the inductor disposed in series between an off-chip high frequency impedance matching circuit and the electroabsorption optical modulator. By separating the impedance matching requirements into separate nulllownull and nullhighnull frequency components, the series inductor may be used to provide the necessary low frequency impedance matching, while also forming the required physical separation between the electroabsorption optical modulator and the (conventional) high frequency impedance matching circuit.

公开(公告)号：US20040016874A1

公开(公告)日：2004-01-29

申请号：US09769671

申请日：2001-01-25

发明人： Hemonth G. Rao ,  Michael J. LaGasse ,  John M. Jacob

IPC分类号： G02F001/01

CPC分类号： H04J14/08 ,  G02F1/0136 ,  H04B10/532 ,  H04J14/06

摘要： An automatic polarization controller is described that includes an optical input that receives a polarization multiplexed optical pulse train that comprises a first and a second polarized optical pulse train. A dither modulation signal is superimposed on at least one of the first and the second polarized optical pulse trains. A polarization transformer transforms an input polarization state of the polarization multiplexed optical pulse train to an output polarization state in response to a control signal that is applied to a control input of the polarization transformer. A polarization selective element receives the transformed polarization multiplexed optical pulse train and passes a polarized optical pulse train including the dither modulation signal. A detector receives the polarized optical pulse train including the superimposed dither modulation signal and generates a signal that is proportional to the amplitude of the dither modulation signal. A feedback control unit receives the signal generated by the detector and generates a control signal that is coupled to the control input of the polarization transformer. The polarization transformer adjusts the polarization state of the polarized optical pulse train in response to the control signal.

摘要翻译： 描述了自动偏振控制器，其包括接收包括第一和第二偏振光脉冲串的偏振复用光脉冲串的光输入。 抖动调制信号叠加在第一和第二偏振光脉冲串中的至少一个上。 响应于施加到偏振变换器的控制输入的控制信号，偏振变换器将偏振复用光脉冲串的输入偏振状态变换为输出偏振状态。 极化选择元件接收经变换的偏振复用光脉冲串，并通过包括抖动调制信号的偏振光脉冲串。 检测器接收包括叠加的抖动调制信号的偏振光脉冲串，并产生与抖动调制信号的振幅成比例的信号。 反馈控制单元接收由检测器产生的信号，并产生耦合到偏振变换器的控制输入的控制信号。 偏振变换器响应于控制信号调节偏振光脉冲串的极化状态。