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公开(公告)号：US07379233B2
公开(公告)日：2008-05-27
申请号：US10715141
申请日：2003-11-18
申请人： Hiroshi Nakamoto , Takao Naito , Kenichi Torii , Toshiki Tanaka
发明人： Hiroshi Nakamoto , Takao Naito , Kenichi Torii , Toshiki Tanaka
IPC分类号： H04B10/17
CPC分类号： H04B10/2916 , H01S3/094076 , H01S3/094096 , H01S3/1022 , H01S3/302 , H04B2210/003
摘要： A plurality of pump light sources generate plural variations of pump light having different frequencies. A modulation circuit intensity-modulates the plural variations of pump light in the predetermined periods, respectively. A pump light pair whose frequency difference equals a Raman shift frequency are modulated such that they cannot simultaneously enters an emission state. A wavelength-multiplexer wavelength-multiplexes the plural variations of pump light modulated by the modulation circuit. A optical guide device guides the plural variations of pump light wavelength-multiplexed by the wavelength-multiplexer to an optical fiber.
摘要翻译： 多个泵浦光源产生具有不同频率的泵浦光的多个变化。 调制电路分别在预定时段内对泵浦光的多个变化进行强度调制。 频率差等于拉曼位移频率的泵浦灯对被调制成不能同时进入发射状态。 波长多路复用器对由调制电路调制的泵浦光的多个变化进行波长多路复用。 光导装置将由波长多路复用器波长多路复用的泵浦光的多种变化引导到光纤。
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公开(公告)号：US20050063043A1
公开(公告)日：2005-03-24
申请号：US10715141
申请日：2003-11-18
申请人： Hiroshi Nakamoto , Takao Naito , Kenichi Torii , Toshiki Tanaka
发明人： Hiroshi Nakamoto , Takao Naito , Kenichi Torii , Toshiki Tanaka
CPC分类号： H04B10/2916 , H01S3/094076 , H01S3/094096 , H01S3/1022 , H01S3/302 , H04B2210/003
摘要： A plurality of pump light sources generate plural variations of pump light having different frequencies. A modulation circuit intensity-modulates the plural variations of pump light in the predetermined periods, respectively. A pump light pair whose frequency difference equals a Raman shift frequency are modulated such that they cannot simultaneously enters an emission state. A wavelength-multiplexer wavelength-multiplexes the plural variations of pump light modulated by the modulation circuit. A optical guide device guides the plural variations of pump light wavelength-multiplexed by the wavelength-multiplexer to an optical fiber.
摘要翻译： 多个泵浦光源产生具有不同频率的泵浦光的多个变化。 调制电路分别在预定时段内对泵浦光的多个变化进行强度调制。 频率差等于拉曼位移频率的泵浦灯对被调制成不能同时进入发射状态。 波长多路复用器对由调制电路调制的泵浦光的多个变化进行波长多路复用。 光导装置将由波长多路复用器波长多路复用的泵浦光的多种变化引导到光纤。
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公开(公告)号：US07242519B2
公开(公告)日：2007-07-10
申请号：US10812104
申请日：2004-03-30
申请人： Kenichi Torii , Takao Naito , Toshiki Tanaka , Masahiro Yuki
发明人： Kenichi Torii , Takao Naito , Toshiki Tanaka , Masahiro Yuki
IPC分类号： H04B10/17
CPC分类号： H01S3/302 , H01S3/094096
摘要： It is an object of the present invention to provide a Raman amplifier capable of easily reducing the wavelength deviation of a Raman gain while suppressing system performance degradation, and an optical transmission system using such a Raman amplifier. To this end, the Raman amplifier of the present invention supplies, to an amplification medium, first pumping lights arranged at equal wavelength spacing in a signal light wavelength band, which is shifted to a shorter wavelength side in accordance with a Raman shift frequency, and second pumping lights arranged in a wavelength band on a shorter wavelength side and a longer wavelength side than a wavelength band of the first pumping lights, the wavelength and power of which are set so that peak wavelength spacing of the Raman gain in the signal light wavelength band is substantially equal to each other, to Raman amplifies a WDM signal light, and reduces the wavelength deviation of power of the WDM signal light by using a gain equalizer having the periodicity corresponding to the peak wavelength spacing of the Raman gain.
摘要翻译： 本发明的目的是提供一种能够在抑制系统性能劣化的同时，容易地降低拉曼增益的波长偏差的拉曼放大器，以及使用这样的拉曼放大器的光传输系统。 为此，本发明的拉曼放大器向放大媒体提供按照拉曼位移频率向短波长侧移动的信号光波长带中的等距波长间隔配置的第一泵浦光，以及 第二泵浦光布置在比第一泵浦光的波长带更短波长侧和较长波长侧的波长带中，其波长和功率被设置为使得信号光波长中的拉曼增益的峰值波长间隔 通过使用具有对应于拉曼增益的峰值波长间隔的周期的增益均衡器，拉曼放大WDM信号光，并降低WDM信号光的功率波长偏差。
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公开(公告)号：US06671083B2
公开(公告)日：2003-12-30
申请号：US10101265
申请日：2002-03-20
申请人： Toshiki Tanaka , Kenichi Torii , Takao Naito
发明人： Toshiki Tanaka , Kenichi Torii , Takao Naito
IPC分类号： H01S300
CPC分类号： H04B10/2916 , H01S3/0675 , H01S3/06754 , H01S3/06758 , H01S3/094003 , H01S3/094096 , H01S3/10023 , H01S3/302 , H04B10/071
摘要： The present invention aims at providing a Raman amplifier and an optical transmission system, capable of reducing characteristic deterioration to be caused by excitation lights mixedly existing within a wavelength band of signal lights. To this end, the Raman amplifier of the present invention comprises an excitation light source that generates excitation lights having a wavelength band overlapped with a wavelength band of the signal lights, a multiplexing unit that supplies the excitation lights to an optical transmission path, and an optical filter that suppresses optical components which are included in lights propagated through an optical transmission path and are of the same wavelengths as those of the excitation lights.
摘要翻译： 本发明的目的在于提供一种拉曼放大器和光传输系统，其能够降低由混合存在于信号光的波长带内的激发光引起的特性劣化。 为此，本发明的拉曼放大器包括产生具有与信号光的波长带重叠的波长带的激励光的激发光源，将激励光提供给光传输路径的复用部，以及 滤光器，其抑制包含在通过光传输路径传播并且具有与激发光的波长相同的波长的光的光学部件。
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5.发明授权公开(公告)号：US07400830B2
公开(公告)日：2008-07-15
申请号：US10806330
申请日：2004-03-23
申请人： Kenichi Torii , Takao Naito , Hiroshi Nakamoto , Toru Katagiri
发明人： Kenichi Torii , Takao Naito , Hiroshi Nakamoto , Toru Katagiri
IPC分类号： H04B10/08
CPC分类号： H04B10/07953
摘要： The present invention has an object to provide a technology for monitoring the quality of a WDM signal light, capable of quickly and accurately judging an occurrence of quality deterioration of signal light and a deterioration factor thereof. To this end, according to a quality monitoring apparatus of WDM signal light of the present invention, a part of the WDM signal light being propagated through an optical transmission path is branched as a monitor light, a signal light of one wavelength contained in the monitor light is selected as a channel to be measured. Then, the frequency of occurrences of bit error for the channel to be measured is repeatedly measured for a plurality of times, and whether or not the signal quality is deteriorated is judged, together with the deterioration factor based on the measurement results, and a control signal light for adjusting the signal light power according to the judgment result is transmitted to the optical transmission path, to achieve the improvement of a characteristic of the WDM signal light.
摘要翻译： 本发明的目的是提供一种用于监视WDM信号光的质量的技术，其能够快速且准确地判断信号光的质量劣化的发生及其劣化因素。 为此，根据本发明的WDM信号光的质量监视装置，通过光传输路径传播的WDM信号光的一部分被分支为监视光，监视器中包含一个波长的信号光 选择光作为待测量的通道。 然后，重复地测量要测量的通道的位错误的发生频率，并且判断信号质量是否劣化，以及基于测量结果的劣化因子以及控制 将根据判断结果调整信号光功率的信号光发送到光传输路径，以实现WDM信号光的特性的提高。
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6.发明授权Radio communication apparatus having common circuits usable by transmitter and receiver systems 失效具有可由发射机和接收机系统使用的公共电路的无线电通信装置
公开(公告)号：US5444863A
公开(公告)日：1995-08-22
申请号：US969058
申请日：1992-10-30
申请人： Kenichi Torii
发明人： Kenichi Torii
摘要： There is provided a radio communication apparatus wherein a band-pass filter and a variable attenuator of a radio high-frequency circuit are designed such that these can be commonly used by transmitter and receiver systems. In a base-band circuit system, analog low-pass filters for smoothing a base-band signal and roll-off filters for removing unnecessary frequency components by digital filtering processing are designed such that these can be commonly used by the transmitter system and receiver system. In the demodulation system adopted in the orthogonal circuit system, orthogonal detection is followed by delay detection, and multipliers for orthogonal modulation are also used as multipliers for orthogonal demodulation. Further, for common use of the circuit elements by the transmitter system and receiver system, switches for connecting the signal line to the transmitter system or the receiver system in the transmission/reception mode are provided at one end or both ends of each of these circuits.
摘要翻译： 提供了一种无线电通信装置，其中设计了无线电高频电路的带通滤波器和可变衰减器，使得它们可以被发射机和接收机系统共同使用。 在基带电路系统中，设计用于平滑基带信号的模拟低通滤波器和用于通过数字滤波处理去除不必要的频率分量的滚降滤波器，使得这些滤波器可以被发射机系统和接收机系统 。 在正交电路系统采用的解调系统中，正交检测后跟延迟检测，正交调制的乘法器也用作正交解调的乘法器。 此外，为了通过发射机系统和接收机系统的电路元件的共同使用，在发送/接收模式中将信号线连接到发射机系统或接收机系统的开关设置在这些电路的每一个的一端或两端 。
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公开(公告)号：US4129842A
公开(公告)日：1978-12-12
申请号：US768906
申请日：1977-02-15
申请人： Kenichi Torii , Shigeo Fujimori
发明人： Kenichi Torii , Shigeo Fujimori
IPC分类号： H01P1/203 , H01P3/08 , H01P7/08 , H03B5/18 , H03J1/00 , H04B1/10 , H04B1/18 , H03J3/18 , H03B5/08
摘要： In one embodiment, a resonant circuit comprising a ground-contacting conductive member, a dielectric layer provided on the ground-contacting conductive layer, a ground-contacting member provided on the dielectric layer and electrically connected to the ground-contacting conductive member, and a U-shaped microstrip line formed on the dielectric layer. Both ends of the U-shaped microstrip line face the ground-contacting member. One of them is connected to the ground-contacting member through a lumped capacitor, and the other end is directly connected to the ground-contacting member.
摘要翻译： 在一个实施例中，包括接地导电构件，设置在接地导电层上的介电层的谐振电路，设置在电介质层上并电连接到接地导电构件的接地构件，以及 U形微带线形成在电介质层上。 U形微带线的两端面向接地部件。 其中一个通过集总电容器连接到接地构件，另一端直接连接到接地构件。
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8.发明授权公开(公告)号：US06518551B2
公开(公告)日：2003-02-11
申请号：US10099990
申请日：2002-03-19
申请人： Tsutomu Watanabe , Kenichi Torii
发明人： Tsutomu Watanabe , Kenichi Torii
IPC分类号： G02B6255
CPC分类号： G02B6/2558
摘要： A heating apparatus includes a heater 6 which includes a first heating conductor pattern 1, a second heating conductor patterns 2 and an elongated plate-shaped member 3 made of heat-resistive and insulated material. The first heating conductor pattern 1 is disposed in the central portion in a longitudinal direction of the plate-shaped member 3. The second heating conductor patterns are disposed in both end portions of the plate-shaped member in the longitudinal direction. The first heating conductor pattern 1 and the second heating conductor patterns 2 are independently controlled their temperature. Current is first fed to the first heating conductor pattern 1, and the current feeding is stopped, and current is then fed to the second heating conductor patterns 2. Accordingly, the protective member placed on and along the heater 6 is gradually heated from the center to both ends.
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公开(公告)号：US06201952B1
公开(公告)日：2001-03-13
申请号：US09121556
申请日：1998-07-23
IPC分类号： H04B116
摘要： A first local signal required for a downconverter of a reception system and an upconverter of a transmission system in a first band is generated by a synthesizer for generating a variable high frequency local signal. A second local signal required for a downconverter of a reception system and an upconverter of a transmission system in a second band is generated by mixing a signal generated by an oscillator for generating a signal at a relatively low fixed frequency with the first local signal using a mixer and filtering the result using a high-pass filter.
摘要翻译： 用于产生可变高频本地信号的合成器产生用于第一频带中的接收系统的下变频器和传输系统的上变频器所需的第一本地信号。 通过将用于产生相对较低固定频率的信号的振荡器产生的信号与第一本地信号相混合，产生用于第二频带中的接收系统的下变频器和传输系统的上变频器所需的第二本地信号， 混合器并使用高通滤波器对结果进行滤波。
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公开(公告)号：US06879433B1
公开(公告)日：2005-04-12
申请号：US10332028
申请日：2000-10-03
申请人： Shinji Yamashita , Kenichi Torii
发明人： Shinji Yamashita , Kenichi Torii
CPC分类号： G02F1/3536 , G02F2001/211 , G02F2201/02 , G02F2203/06
摘要： A wavelength converter which employs an optical fiber and has high converter efficiency. The polarization planes of a signal light and an exciting light outputted from a laser diode (LD) (103) are respectively controlled by polarization controllers (PC's) (101 and 104) and the phases of the lights are respectively modulated by phase modulators (PM's) (102 and 105) in accordance with modulation signals outputted form an oscillator (110). Then, the output lights form the PM's (102 and 105) are multiplexed by a coupler (106). After the multiplexed signal light and exciting light are amplified by an optical amplifier (EDFA) (107), they are imputed to a dispersion shift fiber (DSP) (108). After wavelength transformation (four light waves mixing (FWM) is practiced in the DSP, and FWM light is outputted through a band-pass filter (BPF) (109).
摘要翻译： 一种采用光纤并具有高转换效率的波长转换器。 由激光二极管（LD）（103）输出的信号光和激发光的偏振面分别由偏振控制器（PC）（101和104）控制，光的相位分别由相位调制器（PM） ）（102和105），根据从振荡器（110）输出的调制信号。 然后，PM（102和105）的输出光由耦合器（106）复用。 多路信号光和激发光由光放大器（EDFA）（107）放大后，它们被归入色散位移光纤（DSP）（108）。 在波长变换（在四个光波混合（FWM））中实施，并且通过带通滤波器（BPF）（109）输出FWM光。
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