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    • 1. 发明专利
    • Heat lens reciprocal optical path switching device and optical path switching method
    • 加热透镜复合光路切换装置和光路切换方法
    • JP2008052144A
    • 2008-03-06
    • JP2006229842
    • 2006-08-25
    • Dainichiseika Color & Chem Mfg Co LtdNational Institute Of Advanced Industrial & TechnologyTrimatiz Ltd大日精化工業株式会社株式会社トリマティス独立行政法人産業技術総合研究所
    • TANAKA NORIOSHIGA NORIYASUNAGAEDA HIROSHIUENO ICHIROHIRAGA TAKASHITANIGAKI NOBUTAKAYAMAMOTO NORITAKAMIZOKURO TOSHIKO
    • G02F1/31G02F1/01
    • PROBLEM TO BE SOLVED: To convert an energy distribution of a beam cross section into approximately a Gaussian distribution through an optical system as simple as possible and to increase the coupling efficiency to a single mode optical fiber.
      SOLUTION: A switching device includes: a heat lens forming element 11 that allows converged signal light to exit with a diverging angle larger than a normal diverging angle when a heat lens is formed by irradiation with control light 2; a mirror 80 with a hole that has a hole where signal light 5 exiting from the heat lens forming element 11 with a normal diverging angle is received by a light receiving lens 60 to collimate while changing the normal diverging angle and then passed through the hole and that receives signal light 6 exiting as diverging from the heat lens forming element 11 with a diverging angle larger than a normaldiverging angle, changes the diverging angle larger than the normal angle by the light receiving lens 60, and then specularly reflects the collimated light; and a means for separating signal light 1 propagating in the initial incident direction to the heat lens forming element 11 from signal light 7 specularly reflected by the mirror 80 with the hole and propagating in the opposite direction.
      COPYRIGHT: (C)2008,JPO&INPIT
    • 要解决的问题:通过尽可能简单的光学系统将束横截面的能量分布转换成大致高斯分布,并将耦合效率提高到单模光纤。 解决方案:开关装置包括:热透镜形成元件11,当通过照射控制光2形成热透镜时,允许会聚的信号光以大于正常发散角的发散角离开; 具有孔的反射镜80具有孔,其中具有正常发散角的从热透镜形成元件11出射的信号光5的孔由光接收透镜60接收以准直,同时改变正常发散角然后穿过孔, 接收从发热角度大于正常发散角度的散热角度出射的信号光6,由光接收透镜60改变大于法线角度的发散角,然后镜面反射准直光; 以及用于将由反射镜80镜面反射的信号光7从具有孔并沿相反方向传播的信号光7分离出将在初始入射方向上传播的信号光1分离到热透镜形成元件11的装置。 版权所有(C)2008,JPO&INPIT
    • 2. 发明专利
    • Light deflection method and light deflector
    • 光偏转方法和光偏转器
    • JP2007225825A
    • 2007-09-06
    • JP2006046027
    • 2006-02-22
    • Dainichiseika Color & Chem Mfg Co LtdNational Institute Of Advanced Industrial & TechnologyTrimatiz:Kk大日精化工業株式会社株式会社トリマティス独立行政法人産業技術総合研究所
    • UENO ICHIROTANIGAKI NOBUTAKAYAMAMOTO NORITAKAMIZOKURO TOSHIKOHIRAGA TAKASHITANAKA NORIONAGAEDA HIROSHISHIGA NORIYASU
    • G02F1/29
    • PROBLEM TO BE SOLVED: To provide a light deflection method with which a magnitude of a deflection angle is adjusted with small power of control light, and a light deflector.
      SOLUTION: The light deflector has a signal light source to emit signal light 16 with one or more kinds of wavelengths; a control light source for emitting control light 17 of which the wavelength is different from that of the signal light; a thermal lens forming optical element containing a light absorption layer 22 which transmits the signal light 16 and selectively absorbs the control light 17; and a condensing means which condenses the control light 17 and the signal light 16 in the light absorption layer 22 having different convergent points, wherein the thermal lens forming optical element outputs signal light 19, of which the advancing direction is changed via a change of the refractive index by the action of the thermal lens reversibly, formed due to temperature rise caused by the control light 17 and the signal light 16, which converge in light-advancing directions on an incident plane of the light absorption layer 22 or in the vicinity thereof and subsequently diffuse, and generated in a region of the light absorption layer 22 where the control light 17 is absorbed and in its peripheral region.
      COPYRIGHT: (C)2007,JPO&INPIT
    • 要解决的问题:提供一种以较小的控制光功率调节偏转角度的大小的光偏转方法和光偏转器。 解决方案:光偏转器具有信号光源以发射具有一种或多种波长的信号光16; 用于发射波长不同于信号光的控制光17的控制光源; 包含透光信号光16并选择性地吸收控制光17的光吸收层22的热透镜形成光学元件; 以及冷凝装置,其将具有不同会聚点的光吸收层22中的控制光17和信号光16聚合,其中,热透镜形成光学元件输出信号光19,其中前进方向通过改变 由于由于在光吸收层22的入射面或其附近会聚在光前进方向上的控制光17和信号光16引起的温度升高而引起的热透镜的作用的折射率可逆地形成 并且随后在吸收光的吸收层22的区域中扩散并在其周边区域中产生。 版权所有(C)2007,JPO&INPIT
    • 4. 发明专利
    • Light intensity controller
    • 轻量级控制器
    • JP2010226685A
    • 2010-10-07
    • JP2009097446
    • 2009-03-19
    • Nippon Telegr & Teleph Corp Trimatiz:Kk日本電信電話株式会社株式会社トリマティス
    • NAGAEDA HIROSHITANAKA YOSHIAKISHIGA NORIYASUTAKEHANA MASAKATSUSUZUKI KENICHIFUKADA YOICHIYOSHIMOTO NAOTO
    • H04B10/27H04B10/07H04B10/272H04B10/293H04B10/40H04B10/50H04B10/564H04B10/572H04B10/60H04B10/69
    • PROBLEM TO BE SOLVED: To solve the problem that although requirements of transmission capacity increase among subscribers are increased year by year but a burst signal having considerable variations in intensity disturbs bit rate improvement in a receiver. SOLUTION: A light intensity controller includes: an optical signal branching means for branching a part of an inputted optical signal; a light intensity monitor for monitoring intensity of the optical signal branched by the optical signal branching means; a variable optical attenuator which attenuates the optical signal and is capable of varying the amount of attenuation in accordance with a driving signal; an optical signal delay means installed between the optical signal branching means and the variable optical attenuator; and a control means for driving the variable optical attenuator in such a way that the intensity of an output signal is provided in accordance with the intensity monitored by the light intensity monitor. By performing timing control for driving the variable optical attenuator through digital processing, suitable intensity control can also be performed even when a burst optical signal is inputted. COPYRIGHT: (C)2011,JPO&INPIT
    • 要解决的问题:为了解决尽管用户之间传输容量增加的要求逐年增加,而强度变化剧烈的突发信号会干扰接收机的比特率提高的问题。 解决方案:光强度控制器包括:光信号分支装置,用于对输入的光信号的一部分进行分支; 用于监测由光信号分支装置分支的光信号的强度的光强度监视器; 可变光衰减器,其衰减光信号并能够根据驱动信号改变衰减量; 安装在光信号分支装置和可变光衰减器之间的光信号延迟装置; 以及用于驱动可变光衰减器的控制装置,使得根据由光强度监视器监测的强度来提供输出信号的强度。 通过执行通过数字处理来驱动可变光衰减器的定时控制,即使输入突发光信号,也可以执行合适的强度控制。 版权所有(C)2011,JPO&INPIT
    • 5. 发明专利
    • Optical modulator
    • 光学调制器
    • JP2010217633A
    • 2010-09-30
    • JP2009065602
    • 2009-03-18
    • Sumitomo Osaka Cement Co LtdTrimatiz:Kk住友大阪セメント株式会社株式会社トリマティス
    • MURE KATSUHITOMIYAJI MASAHIDEKATAOKA TOSHIOOIKAWA YOICHISHIGA NORIYASUNAGAEDA HIROSHI
    • G02F1/01
    • PROBLEM TO BE SOLVED: To provide a bias control circuit capable of reducing the hard scale of an optical modulator having a plurality of places such as MZ type optical modulation sections, namely DQPSK modulators or the like, for adjusting the direct current bias.
      SOLUTION: The optical modulator includes two Mach-Zehnder (MZ) type optical modulation sections 2 and 3, which are respectively incorporated into branch waveguides 12 and 13 of a main Mach-Zehnder type optical waveguide 1. The optical modulator includes DC bias-applying means 121 and 131 for applying the DC bias to each MZ type optical modulation section, low-frequency signal superimposing means 122, 123, 132 and 133 for superimposing a low-frequency signal on each DC bias, a light reception-detecting means 6 for detecting reception of a portion of output light or radiation light from the optical modulator, and bias control means 124 and 134 for controlling each of the DC bias-applying means based on the output of the light reception detecting means. The low-frequency signal superimposed on the DC bias applied to each MZ type optical modulation section is set as a triangular wave that has the same frequency and a phase difference of 90°.
      COPYRIGHT: (C)2010,JPO&INPIT
    • 要解决的问题:提供一种能够减少具有多个位置的光调制器的硬标度的偏置控制电路,诸如MZ型光调制部分,即DQPSK调制器等,用于调整直流偏置 。 解决方案:光调制器包括分别并入主马赫 - 曾德尔型光波导1的分支波导12和13中的两个马赫 - 曾德(MZ)型光调制部分2和3。光调制器包括DC 用于向每个MZ型光调制部分施加DC偏压的偏压施加装置121和131,用于在每个DC偏压上叠加低频信号的低频信号叠加装置122,123,132和133,光接收检测 用于检测来自光调制器的输出光或辐射光的一部分的接收的装置6以及用于基于光接收检测装置的输出来控制每个DC偏压施加装置的偏置控制装置124和134。 叠加在施加到每个MZ型光调制部分的DC偏压上的低频信号被设置为具有相同频率和相位差为90°的三角波。 版权所有(C)2010,JPO&INPIT
    • 6. 发明专利
    • Optical receiver
    • 光接收机
    • JP2010233099A
    • 2010-10-14
    • JP2009080319
    • 2009-03-27
    • Sumitomo Osaka Cement Co LtdTrimatiz:Kk住友大阪セメント株式会社株式会社トリマティス
    • MURE KATSUHITOMIYAJI MASAHIDEHIKUMA KAORUMIYAZAKI TOKUICHIKATAOKA TOSHIOSATO HIROYUKINAGAEDA HIROSHISHIGA NORIYASUOIKAWA YOICHI
    • H04B10/40H04B10/2507H04B10/50H04B10/516H04B10/556H04B10/60H04B10/61
    • H04B10/677
    • PROBLEM TO BE SOLVED: To provide an optical receiver that becomes polarization-independent, the optical receiver being configured to demodulate a DQPSK-modulated optical signal into a multi-level phase-modulated signal.
      SOLUTION: The optical receiver includes: a polarization branching means for branching a DQPSK-modulated optical signal into two optical waves with polarization planes orthogonal to each other; a branch rotating means for further branching each of split beams into two optical waves and passing them through a 1/4 wavelength plate at 45°; a one-bit delay circuit means separating each of four optical waves through the branch rotating means into two optical waves with polarization planes orthogonal to each other; a rotation branching means for passing the two optical waves, that have passed through the one-bit delay circuit means, through the 1/4 wavelength plate at 45°, further rotating the polarization planes at 22.5°, and branching them for each of the two optical waves with polarization planes orthogonal to each other; and a multiplexing means for passing the specific four optical waves, that have been passed through the rotation branching means, through a half wavelength plate at 45° and multiplexing resultant eight optical waves while maintaining polarization planes in a specific combination.
      COPYRIGHT: (C)2011,JPO&INPIT
    • 要解决的问题:为了提供一种成为偏振无关的光接收机,该光接收器被配置为将DQPSK调制的光信号解调为多电平相位调制信号。 光接收机包括:极化分支装置,用于将DQPSK调制的光信号分支成具有彼此正交的偏振平面的两个光波; 分支旋转装置,用于将每个分束光束进一步分支成两个光波,并使其通过45°的1/4波长板; 一位延迟电路将通过分支旋转装置的四个光波中的每一个分离成具有彼此正交的极化面的两个光波; 旋转分支装置,其使已经通过一比特延迟电路装置的两个光波通过1/4波长的板45°,使偏振面进一步旋转在22.5°,并将它们分别用于 具有彼此正交的极化平面的两个光波; 以及多路复用装置,用于使已经通过旋转分支装置的特定四个光波通过半波长45°的光,并且在保持特定组合的偏振面的同时复用8个光波。 版权所有(C)2011,JPO&INPIT
    • 7. 发明专利
    • Optical receiver
    • 光接收机
    • JP2010087900A
    • 2010-04-15
    • JP2008255528
    • 2008-09-30
    • Sumitomo Osaka Cement Co LtdTrimatiz:Kk住友大阪セメント株式会社株式会社トリマティス
    • MURE KATSUHITOHIKUMA KAORUKATAOKA TOSHIOMIYAZAKI TOKUICHIMIYAJI MASAHIDEOIKAWA YOICHISHIGA NORIYASUNAGAEDA HIROSHI
    • H04B10/40H04B10/50H04B10/516H04B10/556H04B10/60H04B10/61H04B10/67
    • PROBLEM TO BE SOLVED: To provide an optical receiver capable of performing modulation using one interferometer in the optical receiver configured to demodulate a DQPSK-modulated optical signal into a multi-level phase-modulated signal.
      SOLUTION: The optical receiver, which demodulates a DQPSK-modulated optical signal A into a multi-level phase-modulated signal, is provided with an interference means 2, demultiplexing adjusting means (3-5) and detection means 6, 6'. The interference means 2 splits the DQPSK-modulated optical signal into two beams, delays at least one split beam so that two split beams have a predetermined phase difference therebetween, rotates a polarization plane of at least one split beam so that polarization planes of two split beams are brought into an orthogonal relation, and multiplexes the two split beams thereafter. The demultiplexing adjusting means (3-5) demultiplexes output light from the interference means and adjusts a polarization plane of the demultiplexed light. The detection means 6, 6' detects light intensity of demultiplexed light output from the demultiplexing adjusting means. The optical receiver is characterized in that an I (In-phase) component signal and a Q (Quadrature) component signal are generated on the basis of detection signals from the detection means.
      COPYRIGHT: (C)2010,JPO&INPIT
    • 要解决的问题:提供一种能够在光接收器中使用一个干涉仪来执行调制的光接收机,被配置为将DQPSK调制的光信号解调为多电平相位调制信号。 解决方案:将DQPSK调制光信号A解调为多电平相位调制信号的光接收机设置有干扰装置2,解复用调整装置(3-5)和检测装置6,6 ”。 干扰装置2将DQPSK调制的光信号分成两束,延迟至少一个分裂光束,使得两个分离光束之间具有预定的相位差,旋转至少一个分束光束的偏振面,使得两分光束的偏振面 使光束成为正交关系,并且之后复用两个分割光束。 解复用调整装置(3-5)对来自干扰装置的输出光进行解复用,并调整解复用光的偏振面。 检测装置6,6'检测从解复用调节装置输出的解复用光的光强度。 光接收器的特征在于,基于来自检测装置的检测信号产生I(同相)分量信号和Q(正交)分量信号。 版权所有(C)2010,JPO&INPIT
    • 9. 发明专利
    • Optical amplifier
    • 光放大器
    • JP2009200454A
    • 2009-09-03
    • JP2008070341
    • 2008-02-20
    • Trimatiz:Kk株式会社トリマティス
    • NAGAEDA HIROSHIHORIUCHI YOSHIAKISHIGA NORIYASUOIKAWA YOICHI
    • H01S3/06H01S3/094H01S3/10
    • PROBLEM TO BE SOLVED: To solve the following problem: while a high-speed optical amplifier with small transient response to burst signal input is required in accordance with expansion and complication of an application range of an optical network, waveform of input light can not be maintained since response speed is not sufficient in the conventional technology. SOLUTION: The optical amplifier includes: a first input monitor means 550; a second input monitor means 560; an optical amplification means 310 including an optical amplification medium 300; an optical delay means 900; a control means 400 for performing feed-forward control; and a high-speed output variable means 610, when the optical amplification means is controlled by the feed-forward control according to signals of the input monitor means 500, response performance of the optical amplification medium is improved, and high-speed response performance is attained by utilizing an overshoot signal as a control signal. Furthermore, the high-speed and stable optical amplifier is attained by simultaneously performing high-speed feedback control of the high-speed output variable means 610 using signals of optical output monitors 700. COPYRIGHT: (C)2009,JPO&INPIT
    • 要解决的问题:解决以下问题:根据光网络的应用范围的扩展和复杂性,需要具有对突发信号输入的小瞬态响应的高速光放大器,输入光的波形 由于传统技术中的响应速度不足,所以不能维持。 光放大器包括:第一输入监视器装置550; 第二输入监视装置560; 包括光放大介质300的光放大装置310; 光延迟装置900; 用于执行前馈控制的控制装置400; 和高速输出变量装置610,当通过根据输入监视装置500的信号的前馈控制来控制光放大装置时,提高了光放大介质的响应性能,并且高速响应性能是 通过利用过冲信号作为控制信号来获得。 此外,通过使用光输出监视器700的信号同时执行高速输出可变装置610的高速反馈控制来实现高速和稳定的光放大器。(C)2009,JPO&INPIT
    • 10. 发明专利
    • Optical device
    • 光学装置
    • JP2008129567A
    • 2008-06-05
    • JP2006345039
    • 2006-11-24
    • Trimatiz:Kk株式会社トリマティス
    • NAGAEDA HIROSHI
    • G02B6/42
    • PROBLEM TO BE SOLVED: To solve the problem that low loss and high speed response are incompatible by conventional techniques in an optical switch which is regarded as an important optical device because of increased demand for routing accompanied with a complicated network.
      SOLUTION: The optical device achieves a high-speed operation while reducing strokes in movable components as far as possible by using a low-loss collimate coupling system and employing a partial condensing system. An input fiber 11 and an output fiber 21, and an input fiber 12 and an output fiber 22 fixed by double core ferrules 31, 32 are disposed while being opposed to each other across a movable mirror 5, and compound functional lenses 41, 42 are added to such a configuration. By narrowing the optical path only in the stroke direction of the movable mirror, the stroke can be decreased to achieve a high-speed operation.
      COPYRIGHT: (C)2008,JPO&INPIT
    • 要解决的问题:为了解决由于对伴随着复杂网络的路由的需求增加而被认为是重要的光学装置的光开关中的传统技术不兼容低损耗和高速度响应的问题。 解决方案:通过使用低损耗准直耦合系统和采用部分冷凝系统,光学装置尽可能地尽可能地减少可动部件的冲程,实现高速操作。 通过双芯套圈31,32固定的输入光纤11和输出光纤21以及输入光纤12和输出光纤22彼此相对设置在可移动镜5上,复合功能透镜41,42是 添加到这样的配置。 通过仅在可动镜的行程方向上缩小光路,可以减小行程以实现高速操作。 版权所有(C)2008,JPO&INPIT