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31. 发明专利

JP2008177759A Optical delay detecting circuit for optical multi-value modulation signal 有权
标题翻译：光学多值调制信号的光学延迟检测电路
公开(公告)号：JP2008177759A
公开(公告)日：2008-07-31
申请号：JP2007008098
申请日：2007-01-17
申请人： Nippon Telegr & Teleph Corp , 日本電信電話株式会社
发明人： OGUMA MANABU , GO TAKASHI , NASU YUUKAI , HASHIZUME YASUAKI
IPC分类号： H04B10/516 , H04B10/07 , H04B10/556 , H04B10/61
摘要： PROBLEM TO BE SOLVED: To provide an optical delay detection unit for an optical multi-value modulation signal for reducing the number of control circuits for controlling central wavelength to one, and for reducing the constraint of the control circuit itself by using a central wavelength monitor, and for reducing costs by simplifying an electric circuit. SOLUTION: This optical delay detection circuit for differentially receiving an input optical signal is characterized to branch the input optical signal into two which are given a delay time difference by a first optical delay part having a delay time difference fine adjustment function part, and to branch the optical signals into N sets (N is two or more) which are input to a pair of photoelectric conversion elements, wherein at least two sets of optical signals among the N sets of optical signals are given different delay time differences by a second optical delay part, and interfered by an optical multiplexing/demultiplexing circuit, and input to the pair of the photoelectric conversion elements. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：为了提供用于将多个控制中心波长的控制电路的数量减少到1的用于光学多值调制信号的光学延迟检测单元，并且为了通过使用中央波长监视器，并通过简化电路来降低成本。解决方案：用于差分接收输入光信号的光延迟检测电路的特征在于，通过具有延迟时差微调功能部分的第一光延迟部分将输入光信号分支为两个延迟时间差，并将光信号分支为N组（N为2个以上），输入到一对光电转换元件，其中在N组光信号中的至少两组光信号被给予不同的延迟时间差第二光延迟部分，并被光复用/解复用电路干扰，并输入到一对光电转换元件。版权所有（C）2008，JPO＆INPIT

32. 发明专利

JP2005156802A Highly accurate frequency variable light source and optical spectrum measuring device using the same 审中-公开
标题翻译：高精度的可变光源和使用该光源的光谱测量装置
公开(公告)号：JP2005156802A
公开(公告)日：2005-06-16
申请号：JP2003393665
申请日：2003-11-25
申请人： Nippon Telegr & Teleph Corp , 日本電信電話株式会社
发明人： GO TAKASHI , TAKAHASHI TETSUO , MORI KUNIHIKO , NOGUCHI KAZUHIRO , KOGA MASABUMI
IPC分类号： G02F2/02 , G02F1/35
摘要： PROBLEM TO BE SOLVED: To provide a highly accurate frequency variable light source with which an oscillating optical frequency is controlled with high accuracy and an optical spectrum measuring device using the same. SOLUTION: The highly accurate frequency variable light source is provided with an optical frequency comb generating part generating an optical frequency comb having a plurality of optical frequency comb with a center optical frequency fc and an optical frequency interval f and further mutually independently controlling the center optical frequency fc and the optical frequency interval f, and a frequency variable optical bandpass filter extracting an optical frequency component of the optical frequency comb by controlling a passing center frequency in accordance with control of the center optical frequency fc and the optical frequency interval f. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供一种以高精度控制振荡光频率的高精度频率可变光源和使用其的光谱测量装置。解决方案：高精度的可变频光源设置有产生具有中心光频fc和光频间隔f的多个光频梳的光频梳的光频梳，并进一步相互独立地控制中心光频率fc和光频间隔f，以及频率可变光带通滤波器，通过根据中心光频率fc和光频间隔的控制控制通过中心频率来提取光频梳的光频率分量 F。版权所有（C）2005，JPO＆NCIPI

33. 发明专利

JP2004177515A 1×n optical switch 审中-公开
公开(公告)号：JP2004177515A
公开(公告)日：2004-06-24
申请号：JP2002341334
申请日：2002-11-25
申请人： Nippon Telegr & Teleph Corp , 日本電信電話株式会社
发明人： MINO SHINJI , KITAGAWA TAKESHI , SOMA SHUNICHI , OKUNO MASAYUKI , GO TAKASHI
IPC分类号： G02F1/01 , G02F1/31
摘要： PROBLEM TO BE SOLVED: To reduce the number of driving power source circuits without damaging a function of a switch. SOLUTION: In the 1×N optical switch comprising a switch part consisting of a bifurcated optical switch 1-1 connected to an input waveguide and further one or a plurality of bifurcated optical switches 2-1, 2-2, 3-1 to 3-4 serially connected to the output of the bifurcated optical switch 1-1 and connected to N lines (8 lines) of output waveguides, and gate optical switches G-1 to G-8 respectively connected to the output waveguides, the driving power source circuits are consolidated for each of a plurality of groups with only one bifurcated optical switch in the ON state so as to make their shared use possible and are shared with all of the gate optical switches. COPYRIGHT: (C)2004,JPO

34. 发明专利

JP2004102195A Method for adjusting optical path length of optical waveguide and optical waveguide circuit component whose optical path length is adjusted 审中-公开
公开(公告)号：JP2004102195A
公开(公告)日：2004-04-02
申请号：JP2002267635
申请日：2002-09-13
申请人： Nippon Telegr & Teleph Corp , 日本電信電話株式会社
发明人： HASHIZUME YASUAKI , INOUE YASUYUKI , SHIBATA TOMOHIRO , KASAHARA RYOICHI , ITOU MIKITAKA , GO TAKASHI
IPC分类号： G02B6/13 , G02B6/12 , G02F1/01 , G02F1/313
摘要： PROBLEM TO BE SOLVED: To provide an optical path length adjusting technology for shortening the optical path length adjusting time after manufacturing a device and improving the productivity of the device. SOLUTION: In the case of patterning an optical waveguide 201 on a substrate by using a photolithographic technique in the method for adjusting the optical path length of an optical waveguide, a photomask core circuit pattern to be used for photolithography is trimmed on the basis of the characteristics of an optical waveguide manufactured in the past and a part 203 from which a core disappears is formed on the optical waveguide 201 by using the trimmed photomask to adjust the optical path length. COPYRIGHT: (C)2004,JPO

35. 发明专利

JP2004021123A Method for adjusting waveguide type optical circuit 有权
公开(公告)号：JP2004021123A
公开(公告)日：2004-01-22
申请号：JP2002179100
申请日：2002-06-19
申请人： Nippon Telegr & Teleph Corp , 日本電信電話株式会社
发明人： MIZUNO TAKAYUKI , INOUE YASUYUKI , KAMITOKU MASAKI , GO TAKASHI , OGUMA MANABU , HIBINO YOSHINORI
IPC分类号： G02B6/12 , G02B6/122 , G02F1/01
摘要： PROBLEM TO BE SOLVED: To provide a method for adjusting a waveguide type optical circuit capable of realizing the accurate and very reliable adjustment of an effective refractive index and double refraction. SOLUTION: In a method for locally heating the vicinity of the waveguide of a waveguide type optical circuit formed on a plate substrate, the same heating processing area or a partially superposed heating processing area is processed to be heated several times repeatedly by combining a plurality of heating processing stages determined according to two conditions such as heating power and heating time, whereby optical path length is adjusted. By using a conditional value that a way to change the effective refractive index to polarized light is different, the effective refractive index and the double diffraction are independently adjusted. COPYRIGHT: (C)2004,JPO

36. 发明专利

JP2014209685A マルチキャリア光送信器及びマルチキャリア光送信方法有权
标题翻译：多载波光传输器和多载波光传输方法
公开(公告)号：JP2014209685A
公开(公告)日：2014-11-06
申请号：JP2013085956
申请日：2013-04-16
申请人：日本電信電話株式会社 , Nippon Telegr & Teleph Corp
发明人： YAMAZAKI YASUSHI , GO TAKASHI , TAKAHASHI HIROSHI
IPC分类号： H04B10/572 , H04B10/075 , H04J14/00 , H04J14/02
摘要：【課題】本発明は、サブチャネル毎に個別のCW光源を用い、かつサブキャリア間の周波数間隔を制御可能なマルチキャリア光送信器を提供する。【解決手段】本発明のマルチキャリア光送信器は、N個の送信CW光源と、N個の出力光からN個のモニタ光を出力する手段と、N個のモニタ光を用いてN個の出力光間の周波数間隔を検出して周波数間隔情報を出力する手段と、データ変調用の送信データ信号に基づいて生成された複素電界信号の周波数を各周波数間隔と所定の周波数間隔との差分だけシフトしてN個の駆動信号を出力する手段と、N個の駆動信号に基づいてN個の出力光を変調し周波数をシフトすることにより所定の周波数間隔を有するようにN個のサブチャネル信号を出力する手段と、N個のサブチャネル信号を合波してマルチキャリア信号を送信する手段とを備えたことを特徴とする。【選択図】図1
摘要翻译：要解决的问题：提供一种多载波光发射机，其使用每个子信道的单个CW光源并控制子载波之间的频率间隔。解决方案：多载波光发射机包括：N个传输CW光源; 用于从N个输出光束输出N个监视光束的装置; 用于通过使用N个监视光束检测N个输出光束之间的频率间隔并输出频率间隔信息的装置; 用于根据用于数据调制的传输数据信号产生的复场场信号的频率偏移预定频率间隔与每个频率间隔的差以输出N个驱动信号的装置; 用于根据N个驱动信号调制和移位N个输出光束的频率的装置，以输出具有预定频率间隔的N个子信道信号; 以及用于组合N个子信道信号以发送多载波信号的装置。

37. 发明专利

JP2014059542A Optical multiplexer/demultiplexer 有权
标题翻译：光学多路复用器/解复用器
公开(公告)号：JP2014059542A
公开(公告)日：2014-04-03
申请号：JP2013054098
申请日：2013-03-15
申请人： Nippon Telegr & Teleph Corp , 日本電信電話株式会社
发明人： GO TAKASHI , HASHIZUME YASUAKI
IPC分类号： G02B6/12
摘要： PROBLEM TO BE SOLVED: To provide a multiplexer/demultiplexer having low loss property, excellent in broadband flatness in a passband, and capable of allowing rotation operation and having a multiport structure.SOLUTION: An optical multiplexer/demultiplexer of the present invention comprises: a (1-N)-staged lattice type two-optical flux interferometer in which an optical coupler and a two-optical path delay circuit having a path length different from that of the optical coupler by integral multiple of M×ΔL/2 are alternately connected with each other in multistage; two pairs of 1×(M/2) optical couplers connected to the interferometer; an M array delay circuit connected to the output of the optical coupler and having path lengths each mutually different by ΔL; and an M×M' optical coupler connected to the delay circuit. The M×M' optical coupler is composed by combination of 2×2 optical couplers of M/2 arrays connected in log(M) stages.
摘要翻译：要解决的问题：提供一种具有低损耗特性的多路复用器/解复用器，通带宽带平坦度优异，并且能够允许旋转操作并具有多端口结构。解决方案：本发明的光复用器/解复用器包括：（1-N）级晶格型双光通量干涉仪，其中具有与光耦合器的路径长度不同于M×＆Dgr; L / 2的整数倍的路径长度的光耦合器和双光路延迟电路是以多级交替连接; 连接到干涉仪的两对1×（M / 2）光耦合器; 连接到光耦合器的输出的M阵列延迟电路，并且具有每个相互不同的路径长度＆Dgr; L; 和连接到延迟电路的M×M'光耦合器。 M×M'光耦合器由以M（M）级连接的M / 2阵列的2×2光耦合器组合构成。

38. 发明专利

JP2012163765A Planar lightwave circuit connection device 有权
标题翻译：平面灯电路连接装置
公开(公告)号：JP2012163765A
公开(公告)日：2012-08-30
申请号：JP2011023943
申请日：2011-02-07
申请人： Nippon Telegr & Teleph Corp , 日本電信電話株式会社
发明人： ISHII MOTOHAYA , GO TAKASHI , DOI YOSHIYUKI , YAMAZAKI YASUSHI
IPC分类号： G02B6/26 , G02B6/122
摘要： PROBLEM TO BE SOLVED: To provide a planar lightwave circuit connection device capable of downsizing optical components where multiple planar lightwave circuits are connected.SOLUTION: A planar lightwave circuit connection device 400 connects a first planar lightwave circuit 450 and a second planar lightwave circuit 460. The first planar lightwave circuit 450 is held by a first holding tool 410, and the second planar lightwave circuit 460 is held by a second holding tool 420. The first holding tool 410 is arranged on a six-axis movable stage 430, and is capable of aligning an optical waveguide formed at the first planar lightwave circuit 450 and an optical waveguide formed at the second planar lightwave circuit 460. The planar lightwave circuit connection device 400 uses: first and second light incidence means 411 and 412 of the first holding tool 410 to allow light required for aligning to enter first and second aligning optical waveguides 451 and 452 formed on the first planar lightwave circuit 450; and light-receiving means 440 to receive light emitted from the second planar lightwave circuit 460.
摘要翻译：要解决的问题：提供一种平面光波回路连接装置，其能够连接多个平面光波电路的光学部件的小型化。解决方案：平面光波回路连接装置400连接第一平面光波电路450和第二平面光波电路460.第一平面光波电路450由第一保持工具410保持，第二平面光波电路460是由第二保持工具420保持。第一保持工具410布置在六轴可移动台430上，并且能够对准在第一平面光波电路450处形成的光波导和在第二平面光波形成的光波导平面光波回路连接装置400使用：第一保持工具410的第一和第二光入射装置411和412，以允许对准所需的光进入形成在第一平面光波上的第一和第二对准光波导451和452 电路450; 以及用于接收从第二平面光波电路460发射的光的光接收装置440.（C）2012，JPO和INPIT

39. 发明专利

JP2012068531A Optical circuit 有权
标题翻译：光电路
公开(公告)号：JP2012068531A
公开(公告)日：2012-04-05
申请号：JP2010214377
申请日：2010-09-24
申请人： Nippon Telegr & Teleph Corp , 日本電信電話株式会社
发明人： YAMAZAKI YASUSHI , SAIDA TAKASHI , GO TAKASHI
IPC分类号： G02B6/122 , G02B6/14
摘要： PROBLEM TO BE SOLVED: To provide an optical circuit capable of suppressing high-order mode components while miniaturizing the circuit in a Y-shaped optical circuit connected to a bending waveguide.SOLUTION: An optical circuit 200 is a Y-shaped optical circuit directly connected to a bending waveguide 210 and includes: mode transformation means 201; and two optical waveguides 202 and 203 connected to the mode transformation means 201 into Y shape. In Fig. 1, the mode transformation means is a tapered waveguide axisymmetrical to a light propagation axis, however, the optical circuit 200 according to the present embodiment, the mode transformation means is replaced by an optical waveguide whose core pattern shape is asymmetrical to the light propagation axis to dispense with a high-order mode filter. The mode transformation means 201 is so designed as to transform an input field asymmetrical to the light propagation axis, generated in the bending waveguide 210 into a two-peak type output field symmetrical to the light propagation axis.
摘要翻译：解决的问题：提供一种在连接到弯曲波导的Y形光电路中使电路小型化的同时能够抑制高阶模分量的光电路。解决方案：光电路200是直接连接到弯曲波导210的Y形光电路，包括：模式转换装置201; 以及与模式变换装置201连接的Y形的两个光波导202和203。在图如图1所示，模式转换装置是与光传播轴对称的锥形波导，然而，根据本实施例的光学电路200，模式转换装置被其芯图形形状对于光传播轴线不对称的光波导代替省去了高阶模式滤波器。模式变换装置201被设计成将在弯曲波导210中产生的光传播轴不对称的输入场变换为与光传播轴对称的双峰型输出场。版权所有（C）2012，JPO＆INPIT

40. 发明专利

JP2012015724A Noise signal estimation device, noise signal estimation method, and optical receiver 有权
标题翻译：噪声信号估计装置，噪声信号估计方法和光接收机
公开(公告)号：JP2012015724A
公开(公告)日：2012-01-19
申请号：JP2010149275
申请日：2010-06-30
申请人： Nippon Telegr & Teleph Corp , 日本電信電話株式会社
发明人： ONO HIROTAKA , TAKAHASHI HIROSHI , GO TAKASHI
IPC分类号： H04B10/2507 , H04B10/07 , H04B10/40 , H04B10/50 , H04B10/524 , H04B10/60 , H04B10/69
摘要： PROBLEM TO BE SOLVED: To provide an optical receiver which has SNR of a reception signal improved by correcting a signal noise caused by ASE generated in an optical amplifier and a noise signal estimation device and a noise signal estimation method used for it.SOLUTION: A noise signal estimation device to estimate noises contained in a digital electric signal which is a received optical signal digitally converted comprises: an absolute value calculation part to calculate the absolute value of the digital electric signal; a value detection part to detect one value in the unit time slot of the optical signal regarding the calculated absolute value; a low-frequency passage filter part 7 to pass only the low-frequency signals of the detected values; a difference operation part 8 to calculate the difference value between the output value of the value detection part and the output value of the low-frequency passage filter part; a code conversion part to convert the code for the difference value which corresponds to the value of the code converted of the difference values when the absolute value calculation part calculates the absolute value and to output it as a noise component. Also, a noise signal estimation method uses the noise signal estimation device.
摘要翻译：要解决的问题：提供一种通过校正由光放大器中产生的ASE产生的信号噪声和噪声信号估计装置以及用于其的噪声信号估计方法而改善了接收信号的SNR的光接收机。解决方案：用于估计作为数字转换的接收光信号的数字电信号中包含的噪声的噪声信号估计装置包括：绝对值计算部分，用于计算数字电信号的绝对值; 值检测部分，用于检测关于所计算的绝对值的光信号的单位时隙中的一个值; 低通滤波器部分7，用于仅通过检测值的低频信号; 差分运算部分8，用于计算值检测部分的输出值与低频通道滤波器部分的输出值之间的差值; 代码转换部分，用于当绝对值计算部分计算绝对值并将其作为噪声分量输出时，将与差分值转换的代码值对应的差分值的代码转换。此外，噪声信号估计方法使用噪声信号估计装置。版权所有（C）2012，JPO＆INPIT

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