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公开(公告)号：US06731828B2
公开(公告)日：2004-05-04
申请号：US10185817
申请日：2002-06-28
申请人： Tsutomu Kitou , Yasuyuki Inoue , Manabu Oguma , Takayuki Mizuno , Yoshinori Hibino , Masaki Koutoku
发明人： Tsutomu Kitou , Yasuyuki Inoue , Manabu Oguma , Takayuki Mizuno , Yoshinori Hibino , Masaki Koutoku
IPC分类号： G02B612
CPC分类号： G02B6/138 , G02B6/12004 , G02B6/12007 , G02B6/122 , G02B6/1221 , G02B6/132 , G02B6/136 , G02B2006/12061 , G02B2006/12069 , G02B2006/12109 , G02B2006/12147 , G02B2006/12159 , G02B2006/12164 , G02B2006/12173
摘要： It is an object of the present invention to reduce the size of a circuit and the adverse effects of fabrication errors, while increasing yield. Signal light incident on a circuit through input waveguides propagates from the exterior to interior of the circuit while rotating counterclockwise. The signal light passes through a point of inflection in the center of the circuit, subsequently propagate clockwise from the interior to exterior of the circuit, and then exit output waveguides. Two arms constituting a delay circuit and optical couplers can be integrated together at such an interval that they are not coupled together. Therefore, the size of the circuit can be reduced compared to the prior art.
摘要翻译： 本发明的一个目的是减小电路的尺寸和制造误差的不利影响，同时提高产量。 通过输入波导入射到电路上的信号光在逆时针旋转的同时从电路的外部传播到内部。 信号光通过电路中心的拐点，随后从电路的内部向外传播顺时针，然后退出输出波导。 构成延迟电路和光耦合器的两个臂可以以不会耦合在一起的间隔被集成在一起。 因此，与现有技术相比，可以减小电路的尺寸。
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公开(公告)号：US06735358B2
公开(公告)日：2004-05-11
申请号：US10067065
申请日：2002-02-04
IPC分类号： G02B628
CPC分类号： G02B6/2938 , G02B6/12007 , G02B6/29355 , G02B6/29394 , G02B2006/12159 , H04J14/02
摘要： The present invention provides an optical demultiplexer and an optical multiplexer the transmission characteristics of which are unlikely to be affected by fabrication errors and which have small group delay dispersion. A cross output port (X-OUT) of a second optical demultiplexer element (DEMUX) is selected, and a through output port (T-OUT) of a third DEMUX is selected. A T-OUT of a first DEMUX has a passband equal to the X-OUT of the second DEMUX, and a X-OUT of the first DEMUX has a passband equal to the T-OUT of the third DEMUX. The T-OUT of the first DEMUX has group delay characteristics opposite to those of the X-OUT of the second DEMUX, and the X-OUT of the first DEMUX has group delay characteristics opposite to those of the T-OUT of the third DEMUX.
摘要翻译： 本发明提供一种光解复用器和光复用器，其传输特性不太可能受制造误差的影响，并且具有较小的组延迟色散。 选择第二光解复用器元件（DEMUX）的交叉输出端口（X-OUT），并且选择第三DEMUX的直通输出端口（T-OUT）。 第一DEMUX的T-OUT具有等于第二DEMUX的X-OUT的通带，并且第一DEMUX的X-OUT具有等于第三DEMUX的T-OUT的通带。 第一DEMUX的T-OUT具有与第二DEMUX的X-OUT相反的组延迟特性，并且第一DEMUX的X-OUT具有与第三DEMUX的T-OUT相反的组延迟特性 。
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3.发明授权公开(公告)号：US07085438B2
公开(公告)日：2006-08-01
申请号：US10727171
申请日：2003-12-03
申请人： Takayuki Mizuno , Tsutomu Kitoh , Manabu Oguma , Yasuyuki Inoue
发明人： Takayuki Mizuno , Tsutomu Kitoh , Manabu Oguma , Yasuyuki Inoue
IPC分类号： G02B6/26
CPC分类号： G02B6/12019 , G02B6/12007 , G02B6/12016 , G02B6/12021 , G02B6/12023 , G02B6/29353 , G02B6/29355 , G02B6/2938
摘要： An optical multi/demultiplexing circuit includes at least one phase generating optical coupler and an optical delay line coupled to the phase generating optical coupler. The phase generating optical coupler consists of at least one input and at least two outputs. At least one of the phase generating optical coupler has a wavelength dependent or frequency dependent output phase difference in the passband of the circuit so that it can change the transmittance characteristics of the optical multi/demultiplexing circuit.
摘要翻译： 光学多路复用电路包括至少一个相位产生光耦合器和耦合到相位产生光耦合器的光延迟线。 相位产生光耦合器由至少一个输入和至少两个输出组成。 相位产生光耦合器中的至少一个在电路的通带中具有与波长相关或频率相关的输出相位差，使得其可以改变光学多路复用/解复用电路的透射特性。
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公开(公告)号：US06606433B2
公开(公告)日：2003-08-12
申请号：US09892939
申请日：2001-06-27
申请人： Manabu Oguma , Akira Himeno , Kaname Jinguji , Tsutomu Kitoh , Yoshinori Hibino
发明人： Manabu Oguma , Akira Himeno , Kaname Jinguji , Tsutomu Kitoh , Yoshinori Hibino
IPC分类号： G02B634
CPC分类号： G02B6/12021 , G02B6/29355 , G02B6/2938 , G02F1/0147 , H04J14/02
摘要： An optical multi/demultiplexer is provided that has a wide passband and small crosstalk among its all channels. It includes first and second arrayed waveguide gratings and a 2×2 optical signal processor. The 2×2 optical signal processor includes first to fourth directional couplers, and first to third delay lines. The first to third delay lines have thin film heater phase shifters for correcting phase errors involved in fabrication. Utilizing the 2×2 optical signal processor having a transmission spectrum with a square profile having a wide passband and rejection band makes it possible for the optical multi/demultiplexer that combines the arrayed waveguide gratings with the waveguide type circulating filter (2×2 optical signal processor) to widen the extinction bandwidth of the adjacent channel.
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公开(公告)号：US20110103736A1
公开(公告)日：2011-05-05
申请号：US12673473
申请日：2007-08-24
CPC分类号： G02B6/12007 , G02B6/272 , G02B6/2766 , G02B6/29302 , G02B6/29352 , G02B2006/12038
摘要： A Mach-Zehnder interferometer circuit (700) is provided with two couplers (722, 724) and two arm waveguides (706, 708) connecting the couplers with each other, each fabricated on a substrate, in which a polarization rotation device (732) is disposed in a groove dividing each of the two arm waveguides into two, the polarization rotation device (732) for converting vertically polarized light into horizontally polarized light, and birefringence is adjusted by performing laser irradiation or the like partially into at least one of the two arm waveguides such that a difference between birefringence values divided by an optical wavelength to be used is within a range of 2m−0.2 to 2m+0.2 (m is an integer including zero), the birefringence values being those integrated linearly along the respective two arm waveguides in an optical signal travelling direction.
摘要翻译： 马赫 - 策德尔干涉仪电路（700）设置有两个耦合器（722,724）和两个彼此连接的耦合器的臂波导（706,708），每个制造在基板上，偏振旋转装置（732） 设置在将两个臂波导中的每一个分成两个的凹槽中，用于将垂直偏振光转换成水平偏振光的偏振旋转装置（732），并且通过将激光照射等部分地进行至少一个 双臂波导使得双折射值除以所使用的光波长之间的差异在2m-0.2-2m + 0.2（m是包括零的整数）的范围内，双折射值是沿着相应的两个线性地积分的那些 臂波导在光信号传播方向上。
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公开(公告)号：US06724957B2
公开(公告)日：2004-04-20
申请号：US10213075
申请日：2002-08-07
申请人： Takashi Saida , Takayuki Mizuno , Akira Himeno , Katsunari Okamoto , Koichi Takiguchi , Manabu Oguma
发明人： Takashi Saida , Takayuki Mizuno , Akira Himeno , Katsunari Okamoto , Koichi Takiguchi , Manabu Oguma
IPC分类号： G02B626
CPC分类号： G02B6/29355 , G02B6/105 , G02B6/2938 , G02B6/29386 , G02B2006/12135 , G02B2006/12159
摘要： It is an object of the present invention to provide an optical filter which allows parameters to be easily adjusted, which allows birefringence and temperature dependence to be easily compensated for, and which is essentially free from dispersion. The optical filter includes an optical coupler that splits light into two beams, optical couplers connected to outputs of the optical coupler, a first group of two optical waveguide delay lines connected to the coupler, a second group of two optical waveguide delay lines connected to the coupler, an optical coupler that combines lights from the first group of the lines, an optical coupler that combines lights from the second group of the lines, and a multimode interference optical coupler that combines lights from the couplers together.
摘要翻译： 本发明的目的是提供一种允许容易地调整参数的光学滤波器，其允许容易地补偿双折射和温度依赖性，并且基本上没有分散。 光学滤波器包括将光分成两个光束的光耦合器，连接到光耦合器的输出的光耦合器，连接到耦合器的第一组两个光波导延迟线，连接到该耦合器的两个光波导延迟线的第二组 耦合器，组合来自第一组线路的光的光耦合器，组合来自第二组线路的光的光耦合器和将耦合器的光组合在一起的多模干涉光耦合器。
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公开(公告)号：US08346030B2
公开(公告)日：2013-01-01
申请号：US12673473
申请日：2007-08-24
IPC分类号： G02B6/00
CPC分类号： G02B6/12007 , G02B6/272 , G02B6/2766 , G02B6/29302 , G02B6/29352 , G02B2006/12038
摘要： A Mach-Zehnder interferometer circuit (700) is provided with two couplers (722, 724) and two arm waveguides (706, 708) connecting the couplers with each other, each fabricated on a substrate, in which a polarization rotation device (732) is disposed in a groove dividing each of the two arm waveguides into two, the polarization rotation device (732) for converting vertically polarized light into horizontally polarized light, and birefringence is adjusted by performing laser irradiation or the like partially into at least one of the two arm waveguides such that a difference between birefringence values divided by an optical wavelength to be used is within a range of 2 m-0.2 to 2 m+0.2 (m is an integer including zero), the birefringence values being those integrated linearly along the respective two arm waveguides in an optical signal travelling direction.
摘要翻译： 马赫 - 策德尔干涉仪电路（700）设置有两个耦合器（722,724）和两个彼此连接的耦合器的臂波导（706,708），每个制造在基板上，偏振旋转装置（732） 设置在将两个臂波导中的每一个分成两个的凹槽中，用于将垂直偏振光转换成水平偏振光的偏振旋转装置（732），并且通过将激光照射等部分地进行至少一个 两臂波导使得双折射值除以所使用的光波长之间的差异在2m-0.2-2m + 0.2（m是包括零的整数）的范围内，双折射值是沿着 相应的两个臂波导在光信号行进方向上。
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公开(公告)号：US20060072866A1
公开(公告)日：2006-04-06
申请号：US10536649
申请日：2004-07-02
CPC分类号： G02B6/266 , G02B6/12007 , G02F1/3136 , G02F2203/04
摘要： The present invention discloses an interferometer optical switch that can carry out switching over a broad band and has a high extinction ratio and large fabrication tolerance. The interferometer optical switch employs a phase generating coupler, the phase difference of the output of which has wavelength dependence, as at least one of the optical multi/demultiplexing device included in the interferometer optical switch. A wavelength insensitive interferometer optical switch is implemented by making the sum 2π{φ1(λ)+φΔL(λ)+φ2(λ)} constant regardless of the wavelength, where φ1(λ) is the phase produced by the first optical multi/demultiplexing device, 2πφΔL(λ) is the phase difference of the optical delay line with an optical path length difference of ΔL, and 2πφ2(λ) is the phase produced by the second optical multi/demultiplexing device.
摘要翻译： 本发明公开了一种能够进行宽带切换并具有高消光比和大制造公差的干涉仪光开关。 干涉仪光开关采用相位发生耦合器，其相位差输出具有波长依赖性，作为包括在干涉仪光开关中的光多路复用/解复用器件中的至少一个。 波长不敏感的干涉仪光开关是通过使得2π（φi）1（λ）+ phiDeltaL（λ）+ phi2（＆lt; λ）}不管波长如何，其中，第一光学多路复用/解复用器件产生的相位是λi（λ），2π（λ）是相位 光延迟线与DeltaL和2piphi2λ（λ）的光程长度差的差是由第二光多路分离装置产生的相位。
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公开(公告)号：US07590312B2
公开(公告)日：2009-09-15
申请号：US10536649
申请日：2004-07-02
CPC分类号： G02B6/266 , G02B6/12007 , G02F1/3136 , G02F2203/04
摘要： The present invention discloses an interferometer optical switch that can carry out switching over a broad band and has a high extinction ratio and large fabrication tolerance. The interferometer optical switch employs a phase generating coupler, the phase difference of the output of which has wavelength dependence, as at least one of the optical multi/demultiplexing device included in the interferometer optical switch. A wavelength insensitive interferometer optical switch is implemented by making the sum 2π{φ1(λ)+φΔL(λ)+φ2(λ)} constant regardless of the wavelength, where φ1(λ) is the phase produced by the first optical multi/demultiplexing device, 2πφΔL(λ) is the phase difference of the optical delay line with an optical path length difference of ΔL, and 2πφ2(λ) is the phase produced by the second optical multi/demultiplexing device.
摘要翻译： 本发明公开了一种能够进行宽带切换并具有高消光比和大制造公差的干涉仪光开关。 干涉仪光开关采用相位发生耦合器，其相位差输出具有波长依赖性，作为包括在干涉仪光开关中的光多路复用/解复用器件中的至少一个。 波长不敏感的干涉仪光开关是通过使得波长不同的2π{phi1（λ）+ phiDeltaL（λ）+ phi2（λ）}的和来实现的，其中phi1（λ）是由第一光学多/ 解复用器件，2piphiDeltaL（λ）是光延迟线与DeltaL的光程长度差的相位差，2piphi2（λ）是由第二光多路复用器件产生的相位。
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公开(公告)号：US08150219B2
公开(公告)日：2012-04-03
申请号：US12521867
申请日：2007-12-27
申请人： Yusuke Nasu , Manabu Oguma , Yasuaki Hashizume , Yasuyuki Inoue , Hiroshi Takahashi , Kuninori Hattori , Toshikazu Hashimoto , Yohei Sakamaki
发明人： Yusuke Nasu , Manabu Oguma , Yasuaki Hashizume , Yasuyuki Inoue , Hiroshi Takahashi , Kuninori Hattori , Toshikazu Hashimoto , Yohei Sakamaki
CPC分类号： G02B6/12007 , G02B6/1228 , G02B6/126 , G02B2006/12116 , G02B2006/12159
摘要： In an optical interferometer, polarization dependence attributable to the optical path difference has conventionally been eliminated by inserting a half-wave plate at the center of the interferometer. However, light induced by polarization coupling produced in directional couplers used in the optical interferometer causes interference having different interference conditions from those of the normal light. Polarization rotators that effect any one of 90° rotation and −90° rotation of all states of polarization of incoming light are inserted in the optical interferometer, and thereby the interference conditions of light induced by polarization coupling are made the same as those of the normal light. Each of the polarization rotators is implemented by using two half-wave plates and by varying an angle of combination of these half-wave plates. Alternatively, each of the polarization rotators is implemented through a combination of one half-wave plate and a waveguide having birefringence properties.
摘要翻译： 在光干涉仪中，通过在干涉仪的中心插入半波片，传统上消除了归因于光程差的偏振度依赖性。 然而，由光干涉仪中使用的定向耦合器产生的偏振耦合引起的光引起与正常光的干扰条件不同的干扰。 将影响入射光的所有偏振态的90°旋转和-90°旋转中的任何一个的极化旋转体插入到光学干涉仪中，由此使由偏振耦合引起的光的干涉条件与正常的相同 光。 每个偏振旋转器通过使用两个半波片并通过改变这些半波片的组合角来实现。 或者，每个偏振旋转器通过一个半波片和具有双折射性质的波导的组合来实现。
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