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公开(公告)号：US06970650B2
公开(公告)日：2005-11-29
申请号：US10477535
申请日：2003-02-26
申请人： Satoshi Kajiya , Kaoru Kinjo , Takashi Mizuochi
发明人： Satoshi Kajiya , Kaoru Kinjo , Takashi Mizuochi
CPC分类号： H04B10/2971 , H04B10/2503 , H04B10/2916
摘要： In a one-fiber bidirectional optical transmission system in which output optical signals of optical transmitter-receivers respectively connected to the opposite ends of one optical fiber transmission line are bidirectionally transmitted in the optical fiber transmission line, which utilizes a Raman amplification effect by backward pumping, a frequency satisfying the conditions of |fs1−f0|≠|fp2−f0| and |fs2−f0|≠|fp1−f0| is selected, where f0 is a zero dispersion frequency of the optical fiber transmission line, fs1 and fs2 are the frequencies of the first signal and the second signal, respectively, and fp1 and fp2 are frequencies of the first Raman pump light and the second Raman pump light, respectively.
摘要翻译： 在单纤双向光传输系统中，其中分别连接到一根光纤传输线的相对端的光发射器 - 接收器的输出光信号在光纤传输线中双向传输，其利用通过反向泵浦的拉曼放大效应 满足以下条件的频率满足条件| f
| ＆lt; f＆gt;＆lt;＆lt;＆lt;＆lt; /＆gt; 被选择，其中f 0是光纤传输线的零色散频率，f s1和f 2 s 2是第一个 信号和第二信号，f 1 p1和f 2 p 2分别是第一拉曼泵浦光和第二拉曼泵浦光的频率。 -
2.发明授权公开(公告)号：US07269349B2
公开(公告)日：2007-09-11
申请号：US10124348
申请日：2002-04-18
申请人： Kaoru Kinjo , Satoshi Kajiya , Takashi Mizuochi
发明人： Kaoru Kinjo , Satoshi Kajiya , Takashi Mizuochi
CPC分类号： H04B10/2971 , H04B10/2916 , H04B10/297
摘要： Two signal lights having different wavelengths are bidirectionally transmitted on an optical-fiber transmission-line. A Raman pump light source generates a first Raman pump light having predetermined wavelengths with a Raman gain-bandwidth for amplifying the first signal light and without response to the second signal light. Another Raman pump light source generates a second Raman pump light having predetermined wavelengths with a Raman gain-bandwidth for amplifying the second signal light and without response to the first signal light. The first Raman pump light and the second Raman pump light are differently injected from respective input/output terminals into the optical-fiber transmission-line by optical combining and branching filters.
摘要翻译： 具有不同波长的两个信号光在光纤传输线上双向传输。 拉曼泵浦光源产生具有拉曼增益带宽的预定波长的第一拉曼泵浦光，用于放大第一信号光并且不响应于第二信号光。 另一个拉曼泵浦光源产生具有拉曼增益带宽的预定波长的第二拉曼泵浦光，用于放大第二信号光并且不响应第一信号光。 第一拉曼泵浦光和第二拉曼泵浦光通过光学组合和分支滤波器从各个输入/输出端子不同地注入光纤传输线。
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公开(公告)号：US20060245763A1
公开(公告)日：2006-11-02
申请号：US10562147
申请日：2003-08-27
申请人： Kazuyuki Ishida , Kaoru Kinjo , Takashi Mizuochi
发明人： Kazuyuki Ishida , Kaoru Kinjo , Takashi Mizuochi
IPC分类号： H04B10/04
CPC分类号： H04B10/505 , H04B10/5055 , H04B10/508 , H04B10/5162 , H04B10/5561
摘要： A differential encoder generates a differentially encoded signal based on a data signal. An RZ (return to zero) encoder generates an electric RZ differential signal as an RZ signal in an electric area based on the differentially encoded signal. A Mach-Zehnder interferometer type intensity modulator generates an optical RZ-DSPK (differential phase shift keying) signal as an RZ signal in an optical area based on the electric RZ differential signal.
摘要翻译： 差分编码器基于数据信号产生差分编码信号。 RZ（返回零）编码器基于差分编码信号在电区域中产生作为RZ信号的电RZ差分信号。 马赫曾德干涉仪型强度调制器基于电RZ差分信号在光学区域中产生作为RZ信号的光学RZ-DSPK（差分相移键控）信号。
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公开(公告)号：US07809281B2
公开(公告)日：2010-10-05
申请号：US10562147
申请日：2003-08-27
申请人： Kazuyuki Ishida , Kaoru Kinjo , Takashi Mizuochi
发明人： Kazuyuki Ishida , Kaoru Kinjo , Takashi Mizuochi
CPC分类号： H04B10/505 , H04B10/5055 , H04B10/508 , H04B10/5162 , H04B10/5561
摘要： A differential encoder generates a differentially encoded signal based on a data signal. An RZ (return to zero) encoder generates an electric RZ differential signal as an RZ signal in an electric area based on the differentially encoded signal. A Mach-Zehnder interferometer type intensity modulator generates an optical RZ-DSPK (differential phase shift keying) signal as an RZ signal in an optical area based on the electric RZ differential signal.
摘要翻译： 差分编码器基于数据信号产生差分编码信号。 RZ（返回零）编码器基于差分编码信号在电区域中产生作为RZ信号的电RZ差分信号。 马赫曾德干涉仪型强度调制器基于电RZ差分信号在光学区域中产生作为RZ信号的光学RZ-DSPK（差分相移键控）信号。
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公开(公告)号：US07068421B2
公开(公告)日：2006-06-27
申请号：US10654438
申请日：2003-09-04
CPC分类号： H04B10/2916
摘要： An optical fiber propagates and amplifies a second signal light that is a wavelength-multiplexed signal of a first signal light of a plurality of wavelengths and a reference light that is out of a wavelength range of amplification. An excitation light source outputs an excitation light for amplifying the second signal light. A beam splitter splits a portion of the second signal light into the first signal light and the reference light. A signal light level detecting unit detects a level of the first signal light. A reference light level detecting unit detects a level of the reference light. A signal level setting unit calculates a target value for constantly maintaining a Raman gain, and controls the output level of the excitation light in such a way that the first signal level matches with the target value.
摘要翻译： 光纤传播并放大作为多个波长的第一信号光的波长复用信号的第二信号光和不在放大的波长范围内的参考光。 激发光源输出用于放大第二信号光的激发光。 分束器将第二信号光的一部分分成第一信号光和参考光。 信号光电平检测单元检测第一信号光的电平。 参考光电平检测单元检测参考光的电平。 信号电平设定单元计算用于不断维持拉曼增益的目标值，并以使第一信号电平与目标值相匹配的方式控制激励光的输出电平。
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公开(公告)号：US20050099676A1
公开(公告)日：2005-05-12
申请号：US10654438
申请日：2003-09-04
IPC分类号： G02F1/35 , H01S3/10 , H01S3/30 , H04B10/077 , H04B10/079 , H04B10/29 , H04B10/294 , H04J14/00 , H04J14/02 , H01S3/00
CPC分类号： H04B10/2916
摘要： An optical fiber propagates and amplifies a second signal light that is a wavelength-multiplexed signal of a first signal light of a plurality of wavelengths and a reference light that is out of a wavelength range of amplification. An excitation light source outputs an excitation light for amplifying the second signal light. A beam splitter splits a portion of the second signal light into the first signal light and the reference light. A signal light level detecting unit detects a level of the first signal light. A reference light level detecting unit detects a level of the reference light. A signal level setting unit calculates a target value for constantly maintaining a Raman gain, and controls the output level of the excitation light in such a way that the first signal level matches with the target value.
摘要翻译： 光纤传播并放大作为多个波长的第一信号光的波长复用信号的第二信号光和不在放大的波长范围内的参考光。 激发光源输出用于放大第二信号光的激发光。 分束器将第二信号光的一部分分成第一信号光和参考光。 信号光电平检测单元检测第一信号光的电平。 参考光电平检测单元检测参考光的电平。 信号电平设定单元计算用于不断维持拉曼增益的目标值，并以使第一信号电平与目标值相匹配的方式控制激励光的输出电平。
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7.发明授权Optical wavelength division multiplexing transmission suppressing four-wave mixing and SPM-GVD effects 失效光波分复用传输抑制四波混频和SPM-GVD效应公开(公告)号：US07016614B1
公开(公告)日：2006-03-21
申请号：US09723292
申请日：2000-11-28
IPC分类号： H04B10/00
CPC分类号： H04J14/0227 , H04B10/291
摘要： An optical repeater is provided between a first optical fiber transmission path and a second optical fiber transmission path having a zero-dispersion wavelength different from the first optical fiber transmission path. This optical repeater wave-converts a wavelength division multiplex signal input from the first optical fiber transmission path with respect to respective wavelengths thereof, and outputs the wave-converted signal to the second optical fiber transmission path.
摘要翻译： 在第一光纤传输路径和具有不同于第一光纤传输路径的零色散波长的第二光纤传输路径之间提供光中继器。 该光中继器相对于其波长对从第一光纤传输路径输入的波分复用信号进行波变换，并将该波转换信号输出到第二光纤传输路径。
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8.发明授权公开(公告)号：US08977927B2
公开(公告)日：2015-03-10
申请号：US12778618
申请日：2010-05-12
申请人： Yoshikuni Miyata , Hideo Yoshida , Kazuo Kubo , Takashi Mizuochi
发明人： Yoshikuni Miyata , Hideo Yoshida , Kazuo Kubo , Takashi Mizuochi
CPC分类号： H03M13/29
摘要： An error-correction coding method that includes outer coding of performing a coding process for an outer code; and inner coding of performing a coding process for an inner code that has an error correction capability adjusted based on an error correction capability of the outer code.
摘要翻译： 一种纠错编码方法，包括对外部码进行编码处理的外部编码; 以及对具有基于外部码的纠错能力进行了调整的纠错能力的内部码的编码处理进行内部编码。
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公开(公告)号：US08718487B2
公开(公告)日：2014-05-06
申请号：US13140955
申请日：2010-01-13
IPC分类号： H04B10/00
CPC分类号： H04L27/36 , H04B10/5053 , H04B10/5055 , H04B10/516
摘要： An optical transmitter for converting an input data series into an optical multi-level signal and for outputting the same, includes an LUT in which data for executing optical multi-level modulation is stored and from which first modulation data and second modulation data are output based on the input data series. A DAC converts the first modulation data by D/A conversion to generate a first multi-level signal. A DAC converts the second modulation data by D/A conversion to generate a second multi-level signal. A dual-electrode MZ modulator includes a first phase modulator for modulating light from a light source in accordance with the first multi-level signal and a second phase modulator for modulating light from the light source in accordance with the second multi-level signal, and combines an optical signal from the first phase modulator and an optical signal from the second phase modulator to output the optical multi-level signal.
摘要翻译： 用于将输入数据序列转换为光学多级信号并用于输出的光发送器包括：LUT，其中存储用于执行光学多电平调制的数据，并从其输出第一调制数据和第二调制数据 在输入数据系列上。 DAC通过D / A转换来转换第一调制数据以产生第一多电平信号。 DAC通过D / A转换来转换第二调制数据以产生第二多电平信号。 双电极MZ调制器包括用于根据第一多电平信号调制来自光源的光的第一相位调制器和用于根据第二多电平信号调制来自光源的光的第二相位调制器，以及 组合来自第一相位调制器的光信号和来自第二相位调制器的光信号以输出光多电平信号。
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公开(公告)号：US08645806B2
公开(公告)日：2014-02-04
申请号：US12775825
申请日：2010-05-07
申请人： Takashi Sugihara , Takashi Mizuochi , Kazuo Kubo
发明人： Takashi Sugihara , Takashi Mizuochi , Kazuo Kubo
IPC分类号： H03M13/45
CPC分类号： H04L25/067
摘要： An optical receiving apparatus includes: an A/D converting circuit; a received-signal demodulating circuit that demodulates a received digital signal from the A/D converting circuit into an m-bit received signal; a soft-decision-data generating circuit that generates n-bit (n≦m) soft-decision data based on the m-bit received signal; and an error correcting circuit that performs error correction based on the n-bit soft-decision data and outputs an error-corrected received signal. The soft-decision-data generating circuit generates soft-decision data of n bits (n=p+1) that corresponds to a determination result according to 2n−1 soft-decision thresholds, by using an MSB of the m-bit received signal as hard-decision data, and by using, as reliability information, a result of comparison between a plurality of bits (k bits, where k≦m) on an MSB side of the m-bit received signal and a fixed threshold, or p bits (p≦m−k) selected from (m−k) bits on an LSB side of the m-bit received signal.
摘要翻译： 一种光接收装置，包括：A / D转换电路; 接收信号解调电路，将接收到的数字信号从A / D转换电路解调为m位接收信号; 软判决数据产生电路，其基于所述m位接收信号产生n位（n @ m）个软判决数据; 以及错误校正电路，其基于n位软判决数据进行纠错，并输出纠错接收信号。 软判决数据生成电路通过使用m比特接收信号的MSB，生成与根据2n-1个软判定阈值的判定结果对应的n位（n = p + 1）的软判决数据 作为硬判决数据，并且通过使用作为可靠性信息的m位接收信号的MSB侧的多个位（k位，其中k @ m）与固定阈值之间的比较结果，或者p 从m位接收信号的LSB侧的（mk）位中选择的位（p @ mk）。
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