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1. 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。

2. 发明授权

US08565615B2 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：US08565615B2
公开(公告)日：2013-10-22
申请号：US13048148
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： H04B10/04 , H04B17/00 , H04J14/02
CPC分类号： H04B10/50572 , H04B10/5053 , H04B10/50575 , H04B10/5561
摘要： An optical modulation apparatus includes a first modulator, a second modulator, a multiplexer, a detector and an adjustor. The first modulator modulates light emitted by a light source using a first input signal and outputs a first modulated signal. The second modulator modulates the light using a second input signal and outputs a second modulated signal. The multiplexer multiplexes the first and second modulated signals and outputs a multiplexed signal. The detector is configured to detect a dip where power in a waveform of the multiplexed signal is equal to or smaller than a predetermined value. The adjustor is configured to adjust a delay of the first and second input signals based on power at the dip.
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，检测器和调节器。第一调制器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。第二调制器使用第二输入信号调制光并输出第二调制信号。复用器复用第一和第二调制信号并输出多路复用信号。检测器被配置为检测多路复用信号的波形中的功率等于或小于预定值的下降。调整器被配置为基于倾角处的功率来调整第一和第二输入信号的延迟。

3. 发明申请

US20110229148A1 OPTICAL MODULATION APPARATUS AND OPTICAL MODULATION METHOD 有权
标题翻译：光学调制装置和光学调制方法
公开(公告)号：US20110229148A1
公开(公告)日：2011-09-22
申请号：US13048148
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： H04B10/04
CPC分类号： H04B10/50572 , H04B10/5053 , H04B10/50575 , H04B10/5561
摘要： An optical modulation apparatus includes a first modulator, a second modulator, a multiplexer, a detector and an adjustor. The first modulator modulates light emitted by a light source using a first input signal and outputs a first modulated signal. The second modulator modulates the light using a second input signal and outputs a second modulated signal. The multiplexer multiplexes the first and second modulated signals and outputs a multiplexed signal. The detector is configured to detect a dip where power in a waveform of the multiplexed signal is equal to or smaller than a predetermined value. The adjustor is configured to adjust a delay of the first and second input signals based on power at the dip.
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，检测器和调节器。第一调制器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。第二调制器使用第二输入信号调制光并输出第二调制信号。复用器复用第一和第二调制信号并输出多路复用信号。检测器被配置为检测多路复用信号的波形中的功率等于或小于预定值的下降。调整器被配置为基于倾角处的功率来调整第一和第二输入信号的延迟。

4. 发明授权

US08818207B2 Optical transmitter 有权
标题翻译：光发射机
公开(公告)号：US08818207B2
公开(公告)日：2014-08-26
申请号：US13347405
申请日：2012-01-10
申请人： Toshiki Tanaka , Tomoo Takahara , Shoichiro Oda , Takeshi Hoshida
发明人： Toshiki Tanaka , Tomoo Takahara , Shoichiro Oda , Takeshi Hoshida
IPC分类号： H04B10/04 , H04B10/50 , H04J14/02 , H04B10/532 , H04L5/12 , H04L5/00 , H04L27/26 , H04L27/20
CPC分类号： H04J14/026 , H04B10/506 , H04B10/532 , H04J14/0298 , H04L5/0008 , H04L5/12 , H04L27/2096 , H04L27/2637 , H04L27/2642 , H04L27/2697
摘要： A clock signal from a single reference clock is frequency converted, and the frequency-converted signal is input to an equal-interval-optical-frequency-comb generator and a modulator of an optical modulator. By varying the electric frequency of the clock signal input to the equal-interval-optical-frequency-comb generator, frequency intervals of a frequency comb to be generated can be varied, while by selectively employing a particular optical frequency from among the continuous light beams of the generated frequency comb, a frequency comb having unequal intervals can be generated. It is also possible to vary the modulation rate by varying the clock frequency of a driving signal to be input to the optical modulator. By using a clock signal of a single reference clock, the frequency intervals of the frequency comb and the variation of the modulation rate synchronize with each other.
摘要翻译：来自单个参考时钟的时钟信号被频率转换，并且频率转换的信号被输入到等间隔光频率梳发生器和光调制器的调制器。通过改变输入到等间隔光频梳发生器的时钟信号的电频，可以改变要产生的频率梳的频率间隔，同时通过选择性地使用来自连续光束中的特定光频可以产生具有不等间隔的频率梳。也可以通过改变要输入到光调制器的驱动信号的时钟频率来改变调制速率。通过使用单个参考时钟的时钟信号，频率梳的频率间隔和调制速率的变化彼此同步。

5. 发明申请

US20120243880A1 MULTI-WAVELENGTH LIGHT SOURCE 有权
标题翻译：多波长光源
公开(公告)号：US20120243880A1
公开(公告)日：2012-09-27
申请号：US13413874
申请日：2012-03-07
申请人： Shoichiro ODA , Takeshi Hoshida , Toshiki Tanaka , Takahito Tanimura , Tomoo Takahara
发明人： Shoichiro ODA , Takeshi Hoshida , Toshiki Tanaka , Takahito Tanimura , Tomoo Takahara
IPC分类号： H04B10/04 , F21V9/00
CPC分类号： H04B10/506 , H01S5/005 , H01S5/0085 , H01S5/4087 , H04B10/548
摘要： Light output from a seed light source generation unit that outputs continuous light having a single frequency or a plurality of frequencies is input by a multi-wavelength light source to an optical circulation unit, and light having a plurality of frequencies that is frequency-synchronized with seed light output from the seed light source generation unit is generated. The optical circulation unit is provided with an optical frequency shifter to shift light frequencies, and includes a circulation circuit to return output from the optical frequency shifter to the input side. On a circulation path, an optical spectral shaper capable of adjusting an optical amount of attenuation for each frequency unit is provided so that optical amount of attenuations are adjusted, and thereby the number and the like of optical frequencies output from the optical circulation unit are changed.
摘要翻译：从多光波长光源输入输出具有单一频率或多个频率的连续光的种子光源生成部的光输出到光循环装置，具有频率同步的多个频率的光产生从种子光源生成单元输出的种子光。光学循环单元设置有用于移动光频率的光学移频器，并且包括循环电路，以将输出从光学移频器返回到输入侧。在循环路径上，设置能够调整每个频率单位的光衰减量的光谱整形器，从而调整光衰减量，从而使从光循环单元输出的光频数等变化。

6. 发明授权

US07555061B2 Optical communication device 有权
标题翻译：光通信设备
公开(公告)号：US07555061B2
公开(公告)日：2009-06-30
申请号：US11155666
申请日：2005-06-20
申请人： Toru Katagiri , Takeshi Hoshida , Tomoo Takahara , Kentaro Nakamura , Naoki Kuwata
发明人： Toru Katagiri , Takeshi Hoshida , Tomoo Takahara , Kentaro Nakamura , Naoki Kuwata
IPC分类号： H04L27/20
CPC分类号： H04B10/5051 , H04B10/505 , H04B10/5053 , H04B10/5055 , H04B10/5561 , H04L25/03343 , H04L27/2075 , H04L27/2096
摘要： An optical sender is disclosed that operates in a Differential Quadrature Phase Shift Keying modulation scheme for high speed optical transmission and is capable of performing logical calculations at a low speed. The optical sender transmits a Differential Quadrature Phase Shift Keying (DQPSK) signal generated with modulation signals ρk and ηk so that a signal directly output from a signal receiver corresponding to the optical sender is in agreement with data signals Ik and Qk to be transmitted. The signal receiver is capable of modulation by DQPSK, and the modulation signals ρk and ηk are precoded by using the data signals Ik and Qk and the modulation signals one symbol earlier (ρk−1 and ηk−1) . The optical sender includes plural precoders that perform logical calculation simultaneously and in parallel on plural data signals one period after another period.
摘要翻译：公开了一种用于高速光传输的差分正交相移键控调制方案的光发送器，并能够以低速进行逻辑运算。光发送器发送利用调制信号rhok和etak生成的差分正交相移键控（DQPSK）信号，使得从与光发送器对应的信号接收器直接输出的信号与要发送的数据信号Ik和Qk一致。信号接收机能够通过DQPSK调制，并且通过使用数据信号Ik和Qk以及前一个符号（rhok-1和etak-1）的调制信号对调制信号rhok和etak进行预编码。光发送器包括多个预编码器，这些预编码器在一个周期之后的一个周期上同时并行并行地执行多个数据信号。

7. 发明申请

US20080297270A1 Driver circuit of optical modulator 失效
标题翻译：光调制器的驱动电路
公开(公告)号：US20080297270A1
公开(公告)日：2008-12-04
申请号：US12216270
申请日：2008-07-02
申请人： Tomoo Takahara , Takeshi Hoshida , Hisao Nakashima
发明人： Tomoo Takahara , Takeshi Hoshida , Hisao Nakashima
IPC分类号： H03C3/00
CPC分类号： G02F1/225 , G02F2001/212 , G02F2201/18 , G02F2203/50 , H04B10/505 , H04B10/5561
摘要： A drive signal generation unit generates first and second drive signals for driving first and second phase modulators of a DQPSK optical modulator. First and second regeneration circuits regenerate the first and second drive signals with respect to clock signals. The first and second phase modulators are driven by the regenerated first and second drive signals. The amplitude of the first drive signal is adjusted by a first attenuator. The clock signal for the second regeneration circuit is applied after attenuated by a second attenuator. The delay time caused by the first attenuator is the same as the delay time caused by the second attenuator.
摘要翻译：驱动信号生成单元生成用于驱动DQPSK光调制器的第一和第二相位调制器的第一和第二驱动信号。第一和第二再生电路相对于时钟信号再生第一和第二驱动信号。第一和第二相位调制器由再生的第一和第二驱动信号驱动。第一驱动信号的振幅由第一衰减器调节。第二再生电路的时钟信号由第二衰减器衰减后施加。由第一衰减器引起的延迟时间与由第二衰减器引起的延迟时间相同。

8. 发明申请

US20110150506A1 OPTICAL RECEIVER AND RECEIVING METHOD 审中-公开
标题翻译：光接收机和接收方式
公开(公告)号：US20110150506A1
公开(公告)日：2011-06-23
申请号：US12958828
申请日：2010-12-02
申请人： Takahito TANIMURA , Tomoo Takahara , Takeshi Hoshida
发明人： Takahito TANIMURA , Tomoo Takahara , Takeshi Hoshida
IPC分类号： H04B10/06
CPC分类号： H04B10/697 , H04L25/03019 , H04L27/0014 , H04L27/223 , H04L27/3818 , H04L2025/03535 , H04L2027/004 , H04L2027/0067
摘要： An optical receiver includes an optical front-end, a digital converter, a frequency-characteristic-difference reducing unit and an identifying unit. The optical front-end splits an input signal light into signal light components on a basis of local light and converts the split signal light components into electrical signals. The digital converter converts the electrical signals, converted by the optical front end, into digital signals. The frequency-characteristic-difference reducing unit reduces a frequency-characteristic difference between the digital signals converted by the digital converter. The identifying unit identifies each of the digital signals whose frequency-characteristic difference is reduced by the frequency-characteristic-difference reducing unit.
摘要翻译：光接收器包括光学前端，数字转换器，频率特征差减小单元和识别单元。光学前端在局部光的基础上将输入信号光分解为信号光分量，并将分离的信号光分量转换为电信号。数字转换器将由光学前端转换的电信号转换为数字信号。频率特性差减小单元降低由数字转换器转换的数字信号之间的频率特性差。识别单元通过频率特性差减小单元识别频率特性差减小的每个数字信号。

9. 发明授权

US07689133B2 Optical signal reception device and method of controlling optical signal reception 有权
标题翻译：光信号接收装置及控制光信号接收的方法
公开(公告)号：US07689133B2
公开(公告)日：2010-03-30
申请号：US11510729
申请日：2006-08-28
申请人： Toru Katagiri , Takeshi Hoshida , Tomoo Takahara , Kentaro Nakamura , Naoki Kuwata
发明人： Toru Katagiri , Takeshi Hoshida , Tomoo Takahara , Kentaro Nakamura , Naoki Kuwata
IPC分类号： H04B10/06
CPC分类号： H04B10/66 , H04L27/223
摘要： An optical signal reception device is disclosed that receives and demodulates an optical signal modulated by DQPSK and performs logical inversion and other controls to transit to the object reception state. The signal reception device includes a front end including a delay interferometer and an opto-electric conversion element that receive the DQPSK optical signal and convert it into an in-phase signal and a quadrature-phase signal, a clock regenerator that regenerates a clock signal based on the in-phase signal and the quadrature-phase signal, a multiplexer that multiplexes the in-phase signal and the quadrature-phase signal, a reception frame processing unit that detects frame synchronization based on the signal multiplexed by the multiplexer and de-maps the received frames, and a controller that, based on out-of-frame-synchronization information (LOF/OOF) from the reception frame processing unit, performs logical inversion control in the clock regenerator, multiplexing timing control in the multiplexer, and controls the delay interferometer in the front end so as to transit to the object reception state.
摘要翻译：公开了一种光信号接收装置，其接收并解调由DQPSK调制的光信号，并执行逻辑反转和其它控制以转接到对象接收状态。信号接收装置包括前端，其包括延迟干涉仪和光电转换元件，其接收DQPSK光信号并将其转换为同相信号和正交相位信号，时钟再生器基于时钟信号再生在同相信号和正交相位信号上，复用多路复用同相信号和正交相位信号的接收帧处理单元，其基于由多路复用器多路复用的信号和去映射来检测帧同步接收帧，以及基于来自接收帧处理单元的帧外同步信息（LOF / OOF）执行时钟再生器中的逻辑反转控制的控制器，多路复用器中的复用定时控制，并且控制延迟干涉仪在前端，以便转移到物体接收状态。

10. 发明申请

US20060193399A1 Optical communication device 有权
标题翻译：光通信设备
公开(公告)号：US20060193399A1
公开(公告)日：2006-08-31
申请号：US11155666
申请日：2005-06-20
申请人： Toru Katagiri , Takeshi Hoshida , Tomoo Takahara , Kentaro Nakamura , Naoki Kuwata
发明人： Toru Katagiri , Takeshi Hoshida , Tomoo Takahara , Kentaro Nakamura , Naoki Kuwata
IPC分类号： H04L27/22
CPC分类号： H04B10/5051 , H04B10/505 , H04B10/5053 , H04B10/5055 , H04B10/5561 , H04L25/03343 , H04L27/2075 , H04L27/2096
摘要： An optical sender is disclosed that operates in a Differential Quadrature Phase Shift Keying modulation scheme for high speed optical transmission and is capable of performing logical calculations at a low speed. The optical sender transmits a Differential Quadrature Phase Shift Keying (DQPSK) signal generated with modulation signals ρk and ηk so that a signal directly output from a signal receiver corresponding to the optical sender is in agreement with data signals Ik and Qk to be transmitted. The signal receiver is capable of modulation by DQPSK, and the modulation signals ρk and ηk are precoded by using the data signals Ik and Qk and the modulation signals one symbol earlier (ρk−1 and ηk−1) . The optical sender includes plural precoders that perform logical calculation simultaneously and in parallel on plural data signals one period after another period.
摘要翻译：公开了一种用于高速光传输的差分正交相移键控调制方案的光发送器，并能够以低速进行逻辑运算。光发送器发送使用调制信号rho和k和k进行生成的差分正交相移键控（DQPSK）信号，使得从与信号接收器对应的信号接收器直接输出的信号光发送器与要发送的数据信号I SUB和Q N k一致。该信号接收机能够通过DQPSK进行调制，并且通过使用数据信号I SUB和/或其调制信号对调制信号进行预编码并且调制信号先前有一个符号（rho-k-1和eta-k-1）。光发送器包括多个预编码器，这些预编码器在一个周期之后的一个周期上同时并行并行地执行多个数据信号。

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