公开(公告)号：JP2012532479A

公开(公告)日：2012-12-13

申请号：JP2012516882

申请日：2010-01-07

申请人： コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ

发明人： ティム シー ダブリュ シェンク ,  セル ビー コラク ,  ヨハネス ピー ウェルナルズ ,  ヨハン ピー エム ジー リンナルツ ,  ロレンツォ フェリ ,  パウルス エイチ エイ ダミンク ,  デ フリエス ヘンドリクス ティー ジー エム ペニング

IPC分类号： H04B10/10 ,  H04B10/04 ,  H04B10/145 ,  H04B10/155 ,  H05B37/02 ,  H05B41/24

CPC分类号： H05B37/0272

摘要： A method for driving a lamp (2) comprises the steps of: generating a lamp current (ICONST) having a constant magnitude; defining a commutation period having a duration TCOMM; defining a time base of original commutation moments, having fixed mutual intervals of 0.5*TCOMM; receiving data to be embedded in the light output; commutating the lamp current at commutation moments; wherein individual commutations are time-modulated in order to encode said received data. Preferably, a commutation moment is: either equal to an original commutation moment if there are no data to embed; or advanced over a modulation distance (&Dgr;) with respect to the corresponding original commutation moment in order to encode data having a first value (“0”); or delayed over said modulation distance (&Dgr;) with respect to the corresponding original commutation moment in order to encode data having a second value (“1”).

公开(公告)号：JP2012249122A

公开(公告)日：2012-12-13

申请号：JP2011119922

申请日：2011-05-30

申请人： Nippon Telegr & Teleph Corp ,  日本電信電話株式会社

发明人： YAZAWA GO ,  YUKI NAOHIKO ,  FUJIWARA TOSHIHISA

IPC分类号： H04B10/04 ,  G02F1/01 ,  H04B10/06 ,  H04B10/142 ,  H04B10/152

摘要： PROBLEM TO BE SOLVED: To prevent an increase of component cost and deterioration of signal quality even when the center frequency of a modulation signal is shifted to a high frequency side from a frequency that can be demodulated.SOLUTION: In the optical communication system, an optical transmitter 1 comprises: a first local oscillator 10 for outputting a first local oscillation signal having a first frequency as an oscillation frequency; a modulator 11 for modulating the first local oscillation signal using a data signal; a second local oscillator 14 for outputting a second local oscillation signal having a second frequency, which is located near the frequency band of the modulation signal, as an oscillation frequency; a multiplexer 15 for multiplexing the modulation signal with the second local oscillation signal; a light source 12 for outputting optical continuous signals to be modulated; and an SSB modulator for SSB modulating the optical continuous signals to be modulated, using the multiplexed signal. Further, an optical receiver 2 comprises: a photo sensor 20 for converting the SSB modulation signal into an electric signal; and a demodulator 24 for demodulating the electric signal to output a data signal.

摘要翻译： 要解决的问题：即使当调制信号的中心频率从可解调的频率偏移到高频侧时，也可防止组件成本的增加和信号质量的恶化。 解决方案：在光通信系统中，光发射机1包括：第一本地振荡器10，用于输出具有第一频率的第一本地振荡信号作为振荡频率; 调制器11，用于使用数据信号来调制第一本地振荡信号; 用于将位于调制信号的频带附近的具有第二频率的第二本地振荡信号作为振荡频率输出的第二本机振荡器14; 多路复用器15，用于将调制信号与第二本地振荡信号进行多路复用; 用于输出待调制的光连续信号的光源12; 以及用于SSB的SSB调制器，使用多路复用信号调制要调制的光连续信号。 此外，光接收机2包括：光传感器20，用于将SSB调制信号转换成电信号; 以及用于解调电信号以输出数据信号的解调器24。 版权所有（C）2013，JPO＆INPIT

公开(公告)号：JP2012248958A

公开(公告)日：2012-12-13

申请号：JP2011117287

申请日：2011-05-25

申请人： Fujitsu Ltd ,  富士通株式会社

发明人： SAKAMOTO TAKESHI ,  GOTO RYOSUKE

IPC分类号： H04B10/04 ,  H04B10/06 ,  H04B10/08 ,  H04B10/14 ,  H04B10/142 ,  H04B10/152 ,  H04B10/20 ,  H04J14/00 ,  H04J14/02

CPC分类号： H04J14/0204 ,  H04J14/0212 ,  H04J14/0271 ,  H04J14/0275

摘要： PROBLEM TO BE SOLVED: To shorten an instantaneous interruption time of an optical signal in wavelength rearrangement, in a wavelength rearrangement method.SOLUTION: In a wavelength rearrangement method of an optical wavelength multiplex transmission system, the supply destination of a first-channel electric signal to be converted to an optical signal of a first wavelength by a first optical transmitter is switched from the first optical transmitter to a second optical transmitter for conversion to an optical signal of a second wavelength different from the first wavelength, and the optical signal of the second wavelength outputted by the second optical transmitter is transmitted.

摘要翻译： 要解决的问题：在波长重排方法中，缩短波长重排中的光信号的瞬时中断时间。 解决方案：在光波长复用传输系统的波长重排方法中，由第一光发射机转换成第一波长的光信号的第一通道电信号的供给目的地从第一光学 发射机到第二光发射机，用于转换为不同于第一波长的第二波长的光信号，并且传输由第二光发射机输出的第二波长的光信号。 版权所有（C）2013，JPO＆INPIT

公开(公告)号：JP2012248944A

公开(公告)日：2012-12-13

申请号：JP2011117013

申请日：2011-05-25

申请人： Sumitomo Electric Ind Ltd ,  住友電気工業株式会社

发明人： OKAMOTO MASAAKI

IPC分类号： H04B10/04 ,  H04B10/02 ,  H04B10/06 ,  H04B10/142 ,  H04B10/152 ,  H04B10/18 ,  H04J14/00 ,  H04J14/04 ,  H04J14/06 ,  H04L27/22

摘要： PROBLEM TO BE SOLVED: To extend the range capable of estimating the frequency offset between transmission/reception light sources.SOLUTION: A frequency offset estimation device 20 comprises a first frequency offset estimation unit 23 which estimates a first frequency offset estimation value (a), i.e. the phase variation amount in the symbol period Tof a multilevel PSK demodulation signal sampled at a predetermined timing, a second frequency offset estimation unit 24 which estimates a second frequency offset estimation value (b), i.e. the phase variation amount in the symbol period T/N(N is an integer of 2 or more) of a multilevel PSK demodulation signal sampled at a predetermined timing, and an estimation value correction unit 25 which estimates the frequency offset between transmission/reception light sources on the basis of the first frequency offset estimation value (a) and the second frequency offset estimation value (b).

摘要翻译： 要解决的问题：扩展能够估计发送/接收光源之间的频率偏移的范围。 解决方案：频率偏移估计装置20包括估计第一频率偏移估计值（a）的第一频率偏移估计单元23，即符号周期T 中的相位变化量 在预定定时采样的多电平PSK解调信号的，估计第二频偏估计值（b）的第二频偏估计单元24，即符号周期T sym / N（N为2以上的整数），估计值校正单元25估计发送/接收光源 基于第一频率偏移估计值（a）和第二频率偏移估计值（b）。 版权所有（C）2013，JPO＆INPIT

公开(公告)号：JP2012235376A

公开(公告)日：2012-11-29

申请号：JP2011103477

申请日：2011-05-06

申请人： Sumitomo Electric Ind Ltd ,  住友電気工業株式会社

发明人： SUGIMOTO YOSHIYUKI

IPC分类号： H03F3/34 ,  H03F3/08 ,  H03F3/45 ,  H04B10/04 ,  H04B10/06 ,  H04B10/14 ,  H04B10/26 ,  H04B10/28

CPC分类号： H03F3/45085 ,  H03F3/087 ,  H03F3/45596 ,  H03F2200/405 ,  H04B10/6933

摘要： PROBLEM TO BE SOLVED: To provide an electronic circuit and a light-receiving circuit which compensate for an offset of an input/output signal and are capable of performing an amplifying operation even when an input current increases.SOLUTION: An electronic circuit 30 of the present invention comprises: a differential transimpedance amplifier 10 which converts a complementary input current into a complementary voltage signal and outputs it; and a differential circuit 18 which receives the output and whose output is connected to an input of the differential transimpedance amplifier 10 and whose current source Is5 is controlled on the basis of an average value I2 of the input current.

摘要翻译： 要解决的问题：提供补偿输入/输出信号的偏移的电子电路和光接收电路，并且即使当输入电流增加时也能够执行放大操作。 解决方案：本发明的电子电路30包括：差分跨阻放大器10，其将互补输入电流转换成互补电压信号并将其输出; 以及差分电路18，其接收输出，并且其输出连接到差分跨阻放大器10的输入，并且其电流源Is5基于输入电流的平均值I2进行控制。 版权所有（C）2013，JPO＆INPIT

公开(公告)号：JP2012235345A

公开(公告)日：2012-11-29

申请号：JP2011103105

申请日：2011-05-02

申请人： Hochiki Corp ,  ホーチキ株式会社

发明人： MAZAKI AKIRA

IPC分类号： H04N5/00 ,  H04B10/04 ,  H04B10/06 ,  H04B10/14 ,  H04B10/26 ,  H04B10/28

摘要： PROBLEM TO BE SOLVED: To provide a booster capable of continuing output of signals even when there is no power supply.SOLUTION: A booster 3 comprises: a booster input terminal 30, an amplifier element 31; a branch 32 for distributing signals amplified by the amplifier element 31 to a power supply time output system and a regular output system; a power supply time output terminal 34 for outputting the signals distributed to the power supply time output system; a regular output terminal 35 for outputting the signals; and a first switch 36a and a second switch 36b for connecting the booster input terminal 30 to the amplifier element 31 to output the signals inputted to the booster input terminal 30 from the power supply time output terminal 34 through the amplifier element 31 and the branch 32 and connecting the regular output terminal 35 to the branch 32 to output the signals distributed to the regular output system by the branch 32 from the regular output terminal 35 when power is supplied, and connecting the booster input terminal 30 to the regular output terminal 35 to output the signals inputted to the booster input terminal 30 from the regular output terminal 35 when there is no power supply.

摘要翻译： 要解决的问题：即使在没有电源的情况下，也能够提供能够继续输出信号的升压器。 解决方案：升压器3包括：升压器输入端子30，放大器元件31; 用于将由放大器元件31放大的信号分配给电源时间输出系统和常规输出系统的分支32; 用于输出分配给电源时间输出系统的信号的电源时间输出端子34; 用于输出信号的常规输出端35; 以及用于将升压器输入端子30连接到放大器元件31的第一开关36a和第二开关36b，以通过放大器元件31和分支32输出从电源时间输出端子34输入到升压器输入端子30的信号 并且将常规输出端子35连接到分支32，以便在供电时通过分支32从常规输出端子35输出分配给常规输出系统的信号，并将升压输入端子30连接到常规输出端子35，以 当没有电源时，从常规输出端子35输出输入到升压输入端子30的信号。 版权所有（C）2013，JPO＆INPIT

公开(公告)号：JP2012227764A

公开(公告)日：2012-11-15

申请号：JP2011094052

申请日：2011-04-20

申请人： Nippon Telegr & Teleph Corp ,  日本電信電話株式会社

发明人： SAKAMOTO YASUSHI ,  YAMAMOTO TAKASHI ,  MORI TAKAYOSHI

IPC分类号： H04B10/18 ,  H04B3/06 ,  H04B3/10 ,  H04B10/02 ,  H04B10/04 ,  H04B10/06 ,  H04B10/142 ,  H04B10/152 ,  H04B10/20

摘要： PROBLEM TO BE SOLVED: To provide a technique for implementing long distance transmission by multimode optical fiber transmission.SOLUTION: The present invention relates to an optical fiber transmission system including: a single optical transmitter 1 for transmitting an optical signal; M (M is an integer of two or more) optical receivers 2 for receiving the optical signal; an optical fiber 3 for propagating the optical signal transmitted by the single optical transmitter 1 and having P (P is an integer of two or more and an integer of M or less) propagation modes; a demultiplexer 4 for separating the optical signal propagated by the optical fiber 3 to the M optical receivers 2; and an FIR filter device 5 for compensating a group delay error by means of an FIR filter comprising a delay element for adjusting delay time and an amplitude/phase adjuster for adjusting amplitude and phase about the optical signal received by each optical receiver 2.

摘要翻译： 要解决的问题：提供一种通过多模光纤传输实现长距离传输的技术。 光纤传输系统技术领域本发明涉及一种光纤传输系统，包括：发送光信号的单个光发射机1; M（M是两个以上的整数）光接收机2，用于接收光信号; 用于传播由单个光发送机1发送的光信号并具有P（P为2以上的整数，M以下的整数）传播模式的光纤3; 用于将由光纤3传播的光信号分离到M个光接收机2的解复用器4; 以及用于通过包括用于调整延迟时间的延迟元件的FIR滤波器来补偿组延迟误差的FIR滤波器装置5以及用于调整由每个光接收器2接收的光信号的幅度和相位的幅度/相位调整器。

版权所有（C）2013，JPO＆INPIT

公开(公告)号：JP2012227660A

公开(公告)日：2012-11-15

申请号：JP2011092331

申请日：2011-04-18

申请人： Nippon Telegr & Teleph Corp ,  日本電信電話株式会社

发明人： NAKAHARA TATSUSHI ,  TAKAHASHI AKIRA

IPC分类号： H04B10/18 ,  G02F1/015 ,  H04B10/02 ,  H04B10/04 ,  H04B10/06 ,  H04B10/14 ,  H04B10/26 ,  H04B10/28

摘要： PROBLEM TO BE SOLVED: To provide a light signal stabilizer and a stabilization method that modulate an input light signal to a light signal having light-intensity stabilization improved by preventing intensity fluctuation.SOLUTION: A light signal stabilizer 100 branches an input light pulse train through a light branch circuit 101 to a light receiver 102 and a delay line 103. The light receiver 102 performs photo-electric conversion for the input light pulse train to create an envelope signal. A driver 104 applies an offset equal to or less than a lower limit of light intensity of a pre-estimated input light pulse train to a signal obtained by subjecting the envelope signal outputted from the light receiver 102 to positive and negative inversion, to generate a control signal for turning off light by light intensity obtained by subtracting the offset from the light intensity of the light pulse train. A turn-off type light-intensity modulator 105 modulates the light intensity of the light pulse train inputted through the delay line 103 on the basis of the control signal generated by the driver 104, to output a light pulse train obtained by equalizing light intensity of a total light pulse to the offset.

摘要翻译： 要解决的问题：提供一种光信号稳定器和稳定方法，其通过防止强度波动来改善具有光强度稳定性的光信号的输入光信号。 解决方案：光信号稳定器100将输入光脉冲串通过光分支电路101分支到光接收器102和延迟线103.光接收器102对输入光脉冲串执行光电转换以产生 包络信号。 驱动器104将预先估计的输入光脉冲串的光强度的下限等于或小于对从光接收器102输出的包络信号进行正反转而获得的信号，生成 通过从光脉冲列的光强度减去偏移而获得的光强度来关闭光的控制信号。 关断型光强度调制器105基于由驱动器104产生的控制信号来调制通过延迟线103输入的光脉冲序列的光强度，以输出通过均衡光强度 一个总的光脉冲到偏移。 版权所有（C）2013，JPO＆INPIT

公开(公告)号：JP2012528500A

公开(公告)日：2012-11-12

申请号：JP2012512287

申请日：2010-04-28

申请人： アルカテル−ルーセント

发明人： ベルナスコーニ，ピエトロ

IPC分类号： H04B10/152 ,  H04B10/04 ,  H04B10/06 ,  H04B10/142

CPC分类号： H04J14/02 ,  G02B6/12019

摘要： A demultiplexer and a method of demultiplexing a multiplex of spatially separable multiple wavelength streams, where an incoming multiplex of multiple wavelength streams is separated into a first stream of wavelengths and a second stream of wavelengths according to at least one predetermined separation criterion. The first stream and the second stream are respectively input into a first and a second input port of a multi-input port, multi-output port frequency demultiplexer where the first stream and the second stream are separated into a first group of single wavelengths and a second group of single wavelengths respectively. The first group of single wavelengths is coupled to respective output ports and the second group of single wavelengths are coupled to respective output ports.

公开(公告)号：JP2012217050A

公开(公告)日：2012-11-08

申请号：JP2011081138

申请日：2011-03-31

申请人： Fujitsu Ltd ,  富士通株式会社

发明人： TERAYAMA YOSHIICHI ,  SUKUNAMI NOBUFUMI ,  YUKI MASAHIRO

IPC分类号： H04B10/152 ,  H04B10/04 ,  H04B10/06 ,  H04B10/14 ,  H04B10/142 ,  H04B10/26 ,  H04B10/28

CPC分类号： H04B10/6932

摘要： PROBLEM TO BE SOLVED: To improve the characteristics of an electrical signal with respect to input light.SOLUTION: A light-receiving circuit includes a filter that is disposed at a subsequent stage of an electrical signal amplifier for amplifying an electrical signal converted from a demodulated light signal and adjusts a bandwidth of the electrical signal amplified by the electrical signal amplifier. The light-receiving circuit monitors an input light signal, obtains, from a storage unit, a control value of a bandwidth of the filter corresponding to the monitor value of the monitored input light signal, and controls the bandwidth of the filter based on the obtained control value. In the storage unit, the monitored value of the input light signal and the control value of the bandwidth of the filter with respect to the monitored value are stored in association with each other.

摘要翻译： 要解决的问题：提高相对于输入光的电信号的特性。 光接收电路包括滤波器，滤波器设置在电信号放大器的后级，用于放大从解调光信号转换的电信号，并调节由电信号放大器放大的电信号的带宽 。 光接收电路监视输入光信号，从存储单元获得与所监视的输入光信号的监视值相对应的滤波器的带宽的控制值，并基于获得的控制值控制滤波器的带宽 控制值。 在存储单元中，输入光信号的监视值和滤波器相对于监视值的带宽的控制值彼此关联地存储。 版权所有（C）2013，JPO＆INPIT