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71. 发明申请

US20050213979A1 Wavelength division multiplexing optical transmission system and transmission wavelength control method therefor 有权
标题翻译：波分复用光传输系统及其传输波长控制方法
公开(公告)号：US20050213979A1
公开(公告)日：2005-09-29
申请号：US10914313
申请日：2004-08-10
申请人： Hisao Nakashima , Takeshi Hoshida
发明人： Hisao Nakashima , Takeshi Hoshida
IPC分类号： H04J14/00 , H04B10/071 , H04J14/02
CPC分类号： H04J14/02 , H04B10/07 , H04B10/2503 , H04J14/0227 , H04J14/0246 , H04J14/025 , H04J14/0279
摘要： In the wavelength division multiplexing optical transmission system according to the present invention, when setting the transmission wavelengths of the wavelength-variable optical transmitter in case of addition or expansion of the optical transmitter, each transmission wavelength is set automatically so as to match with each port wavelength of the input port in the multiplexer. Therefore, the setting workload of the optical transmitter is remarkably reduced, and occurrence of incorrect setting can be avoided. Also, with a simple and low-cost structure, the cost is restrained from increasing.
摘要翻译：在根据本发明的波分复用光传输系统中，当在光发射机的添加或扩展的情况下设置波长可变光发射机的传输波长时，每个传输波长被自动设置以便与每个端口匹配多路复用器中输入端口的波长。因此，光发送机的设定工作量显着降低，可以避免错误设定的发生。而且，通过简单且低成本的结构，成本也不受限制。

72. 发明申请

US20050185967A1 Optical repeating apparatus, optical network system, optical network design supporting apparatus and design supporting method 审中-公开
标题翻译：光中继装置，光网络系统，光网络设计支持装置及设计支持方法
公开(公告)号：US20050185967A1
公开(公告)日：2005-08-25
申请号：US11111874
申请日：2005-04-22
申请人： Takeshi Hoshida
发明人： Takeshi Hoshida
IPC分类号： H04B10/02 , H04B10/16 , H04J14/02
CPC分类号： H04J14/0284 , H04B10/29 , H04J14/0227 , H04J14/0241
摘要： The present invention relates to a technique suitable for the enhancement of efficiency of wavelength allocation in an optical network. A transmission capability for each of a plurality of wavelengths available in the optical network is calculated to allocate, to a recommendation optical transmission path in the optical network for a traffic demand from the external, a wavelength having a transmission capability corresponding to a total optics transmission distance of the recommendation optical transmission path on the basis of a result of the calculation. This enables considerably reducing the number of optical repeaters to be disposed, each of which has an electrical signal regeneration function in the optical network, thereby reducing the number of devices, dissipation power, installation area and others in the optical network.
摘要翻译：本发明涉及一种适用于提高光网络中波长分配效率的技术。计算出在光网络中可用的多个波长中的每个波长的传输能力，以便将来自外部的业务需求的光网络中的推荐光传输路径分配给具有对应于总光学传输的传输能力的波长基于计算结果推荐光传输路径的距离。这能够显着地减少光中继器的数量，每个光中继器在光网络中具有电信号再生功能，从而减少光网络中的设备数量，耗散功率，安装面积等。

73. 发明授权

US06885499B1 Optical amplifying apparatus for amplifying wide-wavelength-band light, optical sending apparatus, optical transmission system, and optical amplifying method 失效
标题翻译：用于放大宽波段带光的光放大装置，光发送装置，光传输系统和光放大方法
公开(公告)号：US06885499B1
公开(公告)日：2005-04-26
申请号：US09635431
申请日：2000-08-10
申请人： Takeshi Hoshida , Takafumi Terahara
发明人： Takeshi Hoshida , Takafumi Terahara
IPC分类号： H01S3/10 , H01S3/06 , H01S3/067 , H01S3/30 , H04B3/04 , H04B10/07 , H04B10/29 , H04B10/294 , H04J14/00 , H04J14/02 , H01S3/00
CPC分类号： H04B10/2942 , H04B2210/258 , H04J14/0221
摘要： There are provided a plurality of optical adjusting sections, a wavelength-multiplexing section, and a control section. The plurality of optical adjusting sections, which are provided for respective wavelength bands, amplifies light beams in the respective wavelength bands. The wavelength-multiplexing section wavelength-multiplexes amplified light beams in the respective wavelength bands. The control section controls the outputs of the respective optical amplifying sections so that optical powers of the respective wavelength bands will become approximately identical at a predetermined point when wavelength-multiplexed light of the light beams in the respective wavelength bands travels to the predetermined point. This configuration makes it possible to eliminate optical power deviations between wavelength bands that would otherwise occur when an optical signal of a plurality of wavelength bands is transmitted, and to thereby make optical SNRs uniform.
摘要翻译：提供了多个光学调整部分，波长多路复用部分和控制部分。为各波长带设置的多个光学调整部放大各波长带的光束。波长多路复用部分波长复用各波长带中的放大光束。控制部分控制各个光放大部分的输出，使得各个波长带中的光束的波分复用光行进到预定点时各个波长带的光功率将在预定点变得大致相同。这种结构使得可以消除当发射多个波长带的光信号时将发生的波长带之间的光功率偏差，从而使光SNR均匀。

74. 发明授权

US06775424B2 Modulation and filtration of optical signals 失效
标题翻译：光信号的调制和滤波
公开(公告)号：US06775424B2
公开(公告)日：2004-08-10
申请号：US10007987
申请日：2001-11-12
申请人： Seemant Choudhary , Takeshi Hoshida
发明人： Seemant Choudhary , Takeshi Hoshida
IPC分类号： G02F101
CPC分类号： H04B10/505 , H04B10/25137 , H04B10/5051 , H04B10/5053 , H04B10/5165
摘要： An optical modulator for generating an optical information signal includes a first modulator that modulates an optical carrier with a clock signal. The optical modulator further includes a filter that suppresses a residual carrier component of modulated optical signals. In addition, the optical modulator includes a second modulator for modulating an optical signal with a non-return to zero data signal. When combined, the first and second modulator and the filter operate to transform an optical carrier signal into an optical information signal that is highly tolerant to dispersion and non-linear effects in optical fibers.
摘要翻译：一种用于产生光信息信号的光调制器包括用时钟信号调制光载波的第一调制器。光调制器还包括抑制调制光信号的残留载波分量的滤波器。此外，光调制器包括用于以不归零数据信号调制光信号的第二调制器。当组合时，第一和第二调制器和滤波器操作以将光载波信号转换成对光纤中的色散和非线性效应高度耐受的光信息信号。

75. 发明授权

US09014575B2 Sampling clock synchronizing apparatus, digital coherent receiving apparatus, and sampling clock synchronizing method 有权
标题翻译：采样时钟同步装置，数字相干接收装置和采样时钟同步方法
公开(公告)号：US09014575B2
公开(公告)日：2015-04-21
申请号：US13345008
申请日：2012-01-06
申请人： Hisao Nakashima , Takeshi Hoshida
发明人： Hisao Nakashima , Takeshi Hoshida
IPC分类号： H04B10/06 , H04L7/027 , H04L7/033
CPC分类号： H04L7/027 , H04B10/616 , H04B10/6164 , H04B10/63 , H04L7/0337
摘要： In a sampling clock synchronizing apparatus, an A/D converter converts an analog signal to a digital signal based on a sampling clock, and a processor compensates a band limitation due to spectral narrowing by filter characteristics of characteristics opposite to those of the spectral narrowing with respect to a signal produced from the A/D converter subjected to the spectral narrowing, and detects a phase shift in the sampling clock based on a signal after the compensation of the spectral narrowing and synchronizes sampling timing.
摘要翻译：在采样时钟同步装置中，A / D转换器基于采样时钟将模拟信号转换为数字信号，并且处理器通过与频谱变窄的特性相反的特性的滤波特性来补偿由于频谱变窄引起的频带限制，相对于经受频谱变窄的A / D转换器产生的信号，并且基于在频谱变窄的补偿之后的信号来检测采样时钟中的相移并同步采样定时。

76. 发明授权

US08744278B2 Method for electric power supply of optical receiver, digital signal processing circuit, and optical receiver 有权
标题翻译：光接收机，数字信号处理电路和光接收机的供电方法
公开(公告)号：US08744278B2
公开(公告)日：2014-06-03
申请号：US12458104
申请日：2009-06-30
申请人： Shoichiro Oda , Takeshi Hoshida , Hisao Nakashima , Takahito Tanimura
发明人： Shoichiro Oda , Takeshi Hoshida , Hisao Nakashima , Takahito Tanimura
IPC分类号： H04B10/06 , H04B10/00
CPC分类号： H04L25/03038 , H04B10/6971 , H04L2025/03566
摘要： In a digital signal processing circuit of an optical receiver applicable to this method for electric power supply control, tap coefficients of a filter used in a waveform equalization section are calculated in a tap coefficient calculating section, based on a state of an optical fiber transmission line. Then, among the calculated tap coefficients, a tap coefficient for which an absolute value is less than a previously determined threshold is determined, and electric power supply to a circuit part of a filter corresponding to the tap coefficient is stopped. As a result, for an optical receiver that performs digital signal processing, it is possible to reduce the power consumption, while realizing waveform equalization at a high accuracy.
摘要翻译：在适用于该电力供给控制方法的光接收机的数字信号处理电路中，根据光纤传输线的状态，在抽头系数计算部中计算波形均衡部中使用的滤波器的抽头系数。然后，在所计算的抽头系数中，确定绝对值小于先前确定的阈值的抽头系数，并且停止对与抽头系数相对应的滤波器的电路部分的电力供应。结果，对于执行数字信号处理的光接收机，可以在高精度地实现波形均衡的同时降低功耗。

77. 发明授权

US08693891B2 Optical modulation apparatus and optical modulation method 有权
标题翻译：光调制装置及光调制方式
公开(公告)号：US08693891B2
公开(公告)日：2014-04-08
申请号：US13048150
申请日：2011-03-15
申请人： Masato Nishihara , Tomoo Takahara , Takeshi Hoshida
发明人： Masato Nishihara , Tomoo Takahara , Takeshi Hoshida
IPC分类号： H04J14/06 , H04B10/04 , H04B10/00
CPC分类号： H04B10/505 , H04B10/5162
摘要： An optical modulation apparatus includes a first modulator, a second modulator, a multiplexer, a calculator and an adjustor. The first modulator configured to modulate light emitted by a light source using a first input signal and output a first modulated signal. The second modulator configured to modulate the light using a second input signal and output a second modulated signal. The multiplexer configured to multiplex the first and second modulated signals and output a multiplexed signal. The calculator configured to calculate a power difference between a higher-side frequency component having a frequency higher than a center frequency of the multiplexed signal and a lower-side frequency component having a frequency lower than the center frequency. The adjustor configured to adjust delays of the first and second input signals based on the power.
摘要翻译：光调制装置包括第一调制器，第二调制器，多路复用器，计算器和调节器。第一调制器被配置为使用第一输入信号调制由光源发射的光并输出第一调制信号。第二调制器被配置为使用第二输入信号调制光并输出第二调制信号。复用器被配置为复用第一和第二调制信号并输出多路复用信号。所述计算器被配置为计算频率高于所述多路复用信号的中心频率的较高侧频率分量与具有低于所述中心频率的频率的下侧频率分量之间的功率差。调整器被配置为基于功率来调整第一和第二输入信号的延迟。

78. 发明授权

US08649685B2 Light receiving device and light receiving method 有权
标题翻译：光接收装置及光接收方式
公开(公告)号：US08649685B2
公开(公告)日：2014-02-11
申请号：US12977979
申请日：2010-12-23
申请人： Hisao Nakashima , Takeshi Hoshida
发明人： Hisao Nakashima , Takeshi Hoshida
IPC分类号： H04B10/00
CPC分类号： H04B10/6165 , H04B10/6161 , H04B10/6162 , H04B10/6164 , H04B10/697 , H04L7/0335
摘要： A light receiving device includes: a converter digitalizing an analog signal with a given sampling clock frequency, the analog signal being obtained through a photoelectric conversion of a received optical signal; a plurality of fixed distortion compensators compensating an output signal of the converter for waveform distortion with a fixed compensation amount that is different from each other; a plurality of phase shift detector circuits detecting a sampling phase shift from an output signal of the plurality of the fixed distortion compensators; a phase-adjusting-amount determiner determining a sampling phase adjusting amount with use of an output signal of the plurality of the phase shift detector circuits; and a phase adjusting circuit reducing a phase difference between the sampling clock frequency and the received optical signal based on a determination result of the phase-adjusting-amount determiner.
摘要翻译：光接收装置包括：转换器，其以给定的采样时钟频率对模拟信号进行数字化，模拟信号通过光接收光信号获得; 多个固定失真补偿器，其以相互不同的固定补偿量补偿所述转换器的输出信号的波形失真; 多个相移检测器电路，从多个固定失真补偿器的输出信号中检测采样相移; 相位调整量确定器，利用多个相移检测器电路的输出信号确定采样相位调整量; 以及相位调整电路，根据相位调整量判定器的判定结果，减小采样时钟频率与接收到的光信号之间的相位差。

79. 发明授权

US08488975B2 Optical transmitter, optical transmitter and receiver system, optical transmitting method and optical transmitting and receiving method 有权
标题翻译：光发射机，光发射机和接收机系统，光传输方式和光发射接收方式
公开(公告)号：US08488975B2
公开(公告)日：2013-07-16
申请号：US12911395
申请日：2010-10-25
申请人： Shoichiro Oda , Takeshi Hoshida , Takahito Tanimura
发明人： Shoichiro Oda , Takeshi Hoshida , Takahito Tanimura
IPC分类号： H04B10/00
CPC分类号： H04B10/5053 , H04B10/2569 , H04B10/516 , H04B2210/254 , H04J14/06 , H04J14/086
摘要： An optical transmitter includes: a pre-compensator calculating an electrical field of an optical signal subjected to an electronic pre-compensation with respect to an input digital signal; a parallelizer parallelizing the electrical field of the optical signal calculated by the pre-compensator; a plurality of optical modulators modulating an optical signal based on each of parallelized electrical fields of optical signals; and a time-division multiplexer time-division-multiplexing an optical signal output from the plurality of the optical modulators.
摘要翻译：光发射机包括：预补偿器，用于计算相对于输入数字信号进行电子预补偿的光信号的电场; 平行化由预补偿器计算的光信号的电场的并联器; 多个光调制器，其基于光信号的并行电场中的每一个调制光信号; 以及时分多路复用器，对从多个光调制器输出的光信号进行时分复用。

80. 发明授权

US08406635B2 Optical communication system and optical receiver 有权
标题翻译：光通信系统和光接收机
公开(公告)号：US08406635B2
公开(公告)日：2013-03-26
申请号：US12619656
申请日：2009-11-16
申请人： Hisao Nakashima , Takeshi Hoshida
发明人： Hisao Nakashima , Takeshi Hoshida
IPC分类号： H04B10/00
CPC分类号： H04B10/611 , H04B10/60 , H04B10/614 , H04B10/6161 , H04B10/6165
摘要： An optical receiver for receiving an optical signal that transmits a first data signal and a second data signal, including: an optical front-end configured to generate a digital signal that represents the optical signal; a detector configured to detect a state of the optical signal by using the digital signal and output state information that represents the state of the optical signal; a state controller configured to control the digital signal on the basis of the state information in order to recover the first data signal; and a data recovery configured to recover the second data signal on the basis of the state information.
摘要翻译：一种用于接收发送第一数据信号和第二数据信号的光信号的光接收器，包括：光学前端，被配置为产生表示光信号的数字信号; 检测器，被配置为通过使用数字信号来检测光信号的状态，并输出表示光信号的状态的状态信息; 状态控制器，被配置为基于所述状态信息来控制所述数字信号，以便恢复所述第一数据信号; 以及数据恢复，被配置为基于所述状态信息来恢复所述第二数据信号。

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