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公开(公告)号：US06560381B2
公开(公告)日：2003-05-06
申请号：US09921140
申请日：2001-08-03
IPC分类号： G02B626
CPC分类号： G02B6/12007 , G02B6/29355 , G02F1/0147 , G02F1/225 , G02F2201/16 , G02F2203/48
摘要： Three Mach-Zehnder interferometers 141 to 143 are connected in a series between an optical input terminal and an optical output terminal in an optical filter. Each interferometer is composed of two optical paths optical coupled at both ends by optical couplers. Only one interferometer has same optical path lengths between optical couplers. Heaters are disposed on each optical paths to allow the slope of transmission loss to change through the adjustment of the phase shift between those respective optical paths.
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22.再颁专利Dispersion compensating fiber and optical transmission system including the same 有权色散补偿光纤和光传输系统包括它们公开(公告)号：USRE38086E1
公开(公告)日：2003-04-22
申请号：US09714615
申请日：2000-11-17
IPC分类号： G02B616
CPC分类号： G02B6/02261 , C03B37/014 , C03B2203/22 , C03B2203/36 , G02B6/02004 , G02B6/0228 , G02B6/02285 , G02B6/0281 , G02B6/0283 , G02B6/0286 , G02B6/03611 , G02B6/03627 , G02B6/03644 , G02B6/29377 , H01S3/06729 , H01S3/302
摘要： The present invention relates to a dispersion compensating fiber for improving a transmission system with it in total chromatic dispersion and dispersion slope in the 1.55 &mgr;m wavelength band. The dispersion compensating fiber according to the present invention is characterized by having the following characteristics for light in the 1.55 &mgr;m wavelength band: chromatic dispersion not less than −40 ps/km/nm and not more than 0 ps/km/nm; dispersion slope not less than −0.5 ps/km/nm2 and not more than −0.1 ps/km/nm2; transmission loss not more than 0.5 dB/km; polarization mode dispersion not more than 0.7 ps.km−½; mode field diameter not less than 4.5 &mgr;m and not more than 6.5 &mgr;m; cut-off wavelength not less than 0.7 &mgr;m and not more than 1.7 &mgr;m in the length of 2 m; and bending loss at the diameter of 20 mm, not more than 100 dB/m. The dispersion compensating fiber is optically connected with a dispersion shifted fiber as a compensated object at a ratio of appropriate lengths, which can improve the system including the dispersion compensating fiber in the total chromatic dispersion and dispersion slope of the system in the 1.55 &mgr;m band.
摘要翻译： 本发明涉及一种用于改善传输系统的色散补偿光纤在1.55μm波长带中的总色散和色散斜率。 根据本发明的色散补偿光纤的特征在于对于1.55μm波长带中的光具有以下特性：色散不小于-40ps / km / nm且不大于0ps / km / nm; 色散斜率不小于-0.5 ps / km / nm2，不大于-0.1 ps / km / nm2; 传输损耗不超过0.5 dB / km; 偏振模色散不大于0.7 ps.km-½; 模场直径不小于4.5μm，不大于6.5μm; 截止波长不小于0.7μm和不大于1.7μm，长度为2μm; 弯曲损耗为20mm，不大于100dB / m。 色散补偿光纤以适当长度的比率与作为补偿对象的色散位移光纤光学连接，这可以改善包括色散补偿光纤在1.55mum带中的系统的总色散和色散斜率的系统。
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公开(公告)号：US06498874B1
公开(公告)日：2002-12-24
申请号：US09599265
申请日：2000-06-22
IPC分类号： G02B618
CPC分类号： G02B6/02009 , G02B6/02242 , G02B6/03644 , G02B6/03666 , G02B6/29377 , H04B10/2525
摘要： This invention relates to an optical transmission line having a structure that reduces dispersion with respect to signal light in a 1.55-&mgr;m band. Each transmission unit includes a dispersion-shifted optical fiber as a transmission medium and a mode removing unit for reducing the optical power of high-order modes excluding a fundamental mode of light signals propagating through the dispersion-shifted optical fiber. The dispersion-shifted optical fiber has an incident terminal on which the light signals are incident and an exit terminal from which the light signals are emitted, and has a cutoff wavelength longer than the wavelength of the light signals at a fiber length of 2 m. The mode removing unit has a structure for reducing the optical power of high-order modes to 1/10 or less, preferably 1/40 or less, of the optical power of the fundamental mode so as to satisfy the single-mode condition in relation to fiber length.
摘要翻译： 本发明涉及一种光传输线路，其具有相对于1.55μm波段中的信号光减少色散的结构。 每个发送单元包括作为传输介质的色散位移光纤和用于降低除通过色散位移光纤传播的基本模式的高阶模式的光功率的模式去除单元。 色散位移光纤具有入射端子，光信号入射到入射端子，出射端子发光，并且具有比光纤长度为2μm的光信号的波长更长的截止波长。 模式去除单元具有将高阶模式的光功率降低到基模的光功率的1/10以下，优选为1/40以下的结构，以满足关于单模状态的单模状态 到纤维长度。
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公开(公告)号：US06473546B2
公开(公告)日：2002-10-29
申请号：US09915292
申请日：2001-07-27
IPC分类号： G02B628
CPC分类号： G02B6/12011
摘要： The present invention relates to an AWG type optical multiplexer/demultiplexer having a small size in a state where cross talk is effectively restrained from increasing between adjacent channels. The optical multiplexer/demultiplexer is designed such that, in a power spectrum indicating a wavelength-transmission characteristic concerning an output light component from selected one of output waveguides disposed so as to correspond to respective signals having channel wavelengths set with a predetermined wavelength spacing, an adjacent channel wavelength exists within a wavelength region yielding an output light power lower than that at the channel wavelength corresponding to the selected one by 20 dB or more, whereby the cross talk between adjacent channels occurring as the optical multiplexer/demultiplexer attains a smaller size is effectively suppressed.
摘要翻译： 本发明涉及一种具有小尺寸的AWG型光信号多路复用器/解复用器，其中有效抑制串扰在相邻信道之间增加的状态。 光学多路复用器/解复用器被设计成使得在功率谱中，指示相对于具有以预定波长间隔设置的信道波长的各个信号而设置的输出波导的输出光分量的波长透射特性， 相邻信道波长存在于波长区域内，产生比对应于所选择的信道波长低20dB或更大的信道波长的输出光功率，由此当作为光复用器/解复用器达到较小尺寸的相邻信道之间的串扰为 有效抑制
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公开(公告)号：US06424760B1
公开(公告)日：2002-07-23
申请号：US09750281
申请日：2000-12-29
IPC分类号： G02B628
CPC分类号： G02B6/12009
摘要： The present invention relates to an optical multiplexer/demultiplexer which ameliorates the deterioration in crosstalk characteristics between adjacent signal channels in a simpler configuration with a better reproducibility. In this optical multiplexer/demultiplexer, a space filled with cladding glass having a size which is at least three times the width or thickness of each channel waveguide is provided between the slab and channel waveguides. This configuration effectively improves the deterioration in crosstalk between adjacent signal channels on a par with the case where the slab and channel waveguides are directly connected to each other.
摘要翻译： 本发明涉及一种光复用器/解复用器，其以更好的再现性在更简单的配置中改善相邻信号信道之间的串扰特性的恶化。 在这种光复用器/解复用器中，在平板和通道波导之间提供了一个填充有包层玻璃的空间，其尺寸至少为每个通道波导的宽度或厚度的三倍。 这种配置与板和通道波导彼此直接连接的情况相当，有效地改善了相邻信号通道之间串扰的恶化。
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公开(公告)号：US6023599A
公开(公告)日：2000-02-08
申请号：US244897
申请日：1999-02-04
IPC分类号： G03G15/01
CPC分类号： G03G15/0126 , G03G2215/0177
摘要： An image forming apparatus for developing an electrostatic latent image formed on an image carrier, which is rotatable around an central shaft thereof, with plural colors of toner comprises a developing unit assembly an outer peripheral portion of which retains a plurality of developing units each of which includes a developing roller being to be contacted with the image carrier to supply the associated color of the toner thereon, the developing unit assembly rotatable around a central shaft thereof, a first drive member for rotatively driving the developing roller positioned at a contact position of the developing roller and the image carrier, a second drive member for rotatively driving the developing unit assembly to subsequently position each of the developing roller at the contact position so a rotational direction of the developing unit assembly as to be opposed to a rotational direction of the developing unit assembly according to a reaction force derived from the driving of the first drive member.
摘要翻译： 一种图像形成装置，用于将形成在图像载体上的静电潜像显影，所述静电潜像可绕其中心轴旋转，具有多种颜色的调色剂，包括：显影单元组件，其外周部分保持多个显影单元， 包括显影辊，其与图像载体接触以在其上提供调色剂的相关颜色，所述显影单元组件可围绕其中心轴旋转;第一驱动构件，用于旋转地驱动位于所述显影辊的接触位置的显影辊 显影辊和图像载体，第二驱动构件，用于旋转地驱动显影单元组件，以随后将显影辊的每一个定位在接触位置处，使得显影单元组件的旋转方向与显影单元组件的旋转方向相对; 根据来自驱动的反作用力单元组装 第一驱动器。
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公开(公告)号：US5572357A
公开(公告)日：1996-11-05
申请号：US389698
申请日：1995-02-14
申请人： Koji Nakazato , Masayuki Nishimura
发明人： Koji Nakazato , Masayuki Nishimura
CPC分类号： H01S3/10023 , H01S2301/04 , H01S3/0064 , H01S3/06725 , H01S3/06754 , H01S3/094011 , H01S3/2316 , H01S3/2333
摘要： An optical amplifier for amplifying light having first and second signals includes an optical circulator for outputting light input from a first port through a second port, and outputting light input from the second port through a third port. A first amplifier for amplifying light passing therethrough is connected to the second port. A second amplifier for amplifying light passing therethrough is connected to the first amplifier. A first reflector for reflecting the first light signal, and transmitting the second light signal is arranged between the first and second amplifiers and a second reflector for reflecting the second light signal is arranged such that the second amplifier is located between the first and second reflectors. A separate branch may be connected to compensate for time difference experienced by the first and second signals when traveling through the first and second amplifiers.
摘要翻译： 一种用于放大具有第一和第二信号的光的光放大器，包括：光环行器，用于输出从第一端口通过第二端口输入的光;以及通过第三端口输出从第二端口输入的光。 用于放大穿过其中的光的第一放大器连接到第二端口。 用于放大通过其中的光的第二放大器连接到第一放大器。 用于反射第一光信号和透射第二光信号的第一反射器布置在第一和第二放大器之间，并且用于反射第二光信号的第二反射器被布置成使得第二放大器位于第一和第二反射器之间。 可以连接单独的分支以补偿当行进第一和第二放大器时第一和第二信号所经历的时间差。
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公开(公告)号：US07330302B2
公开(公告)日：2008-02-12
申请号：US10607380
申请日：2003-06-27
IPC分类号： H01S3/00
CPC分类号： H04B10/2525 , H04B10/2916 , H04B2210/003
摘要： This invention provides an optical transmission system which allows to perform high-quality transmission of each of a plurality of signal channels multiplexed. In the optical transmission system, signal light in which a plurality of signal channels with an optical frequency spacing of 400 GHz or more but 12.5 THz or less is transmitted from an optical transmitter to a Raman amplifier through an optical fiber transmission line. In the Raman amplifier, pumping light from a pumping light source unit is supplied to an optical fiber through an optical coupler. The multiplexed signal light inputted to the Raman amplifier arrives at the optical fiber through an optical isolator and optical coupler, and Raman-amplified by the optical fiber. The Raman-amplified multiplexed signal light is outputted from the Raman amplifier through an optical coupler and optical isolator.
摘要翻译： 本发明提供一种光传输系统，其允许多路复用的多个信号信道中的每一个的高质量传输。 在光传输系统中，其中通过光纤传输线路将光频率为400GHz以上且12.5THz以下的多个信号信道从光发射机发射到拉曼放大器的信号光。 在拉曼放大器中，来自泵浦光源单元的泵浦光通过光耦合器提供给光纤。 输入到拉曼放大器的复用信号光通过光隔离器和光耦合器到达光纤，并由光纤拉曼放大。 拉曼放大的复用信号光通过光耦合器和光隔离器从拉曼放大器输出。
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公开(公告)号：US20050100354A1
公开(公告)日：2005-05-12
申请号：US10872542
申请日：2004-06-22
申请人： Shigeki Nishimura , Hiromitsu Koizumi , Norio Irie , Masayuki Nishimura , Takuji Matsumoto , Naomasa Okimura
发明人： Shigeki Nishimura , Hiromitsu Koizumi , Norio Irie , Masayuki Nishimura , Takuji Matsumoto , Naomasa Okimura
CPC分类号： G03G21/12 , G03G2221/0005
摘要： An image forming apparatus for forming an image with a developing agent, includes: a collecting-developing-agent occurring part in which the collecting developing agent to be collected in the developing agent occurs; a collection container for accommodating the collecting developing agent; a transporting part provided so as to connect the collection container and the collecting-developing-agent occurring part and for collecting and transporting the collecting developing agent occurring in the collecting-developing-agent occurring part; and a replacement part removably mounted in an apparatus body, wherein the collection container is mounted to be integrated with the replacement part.
摘要翻译： 一种用显影剂形成图像的图像形成装置，包括：收集显影剂发生部，其中收集在显影剂中的收集显影剂发生; 用于容纳收集显影剂的收集容器; 输送部，其设置为连接收集容器和收集显影剂发生部分，并用于收集和运送在收集显影剂发生部分中出现的收集显影剂; 以及可拆卸地安装在装置主体中的替换部件，其中所述收集容器安装成与所述更换部件一体化。
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公开(公告)号：US06801683B2
公开(公告)日：2004-10-05
申请号：US10331493
申请日：2002-12-31
IPC分类号： G02B635
CPC分类号： G02B6/3596 , G02B6/266 , G02B6/3514 , G02B6/3546 , G02B6/357 , G02B6/3594
摘要： An optical module has a planar waveguide which is provided with an optical circuit for an optical switch formed by 2×2 cross optical waveguides A1 to D1 and an optical circuit for an optical variable attenuator formed by 2×2 cross optical waveguides A2 to D2. Joined onto the planar waveguide is an actuator structure and the actuator structure is constituted by an actuator section for an optical switch and an actuator section for an optical variable attenuator. The optical circuit of the planar waveguide and the actuator section constitute an optical switch, whereas the optical circuit of the planar waveguide 2 and the actuator section constitute an optical variable attenuator.
摘要翻译： 光学模块具有平面波导，该平面波导设置有用于由2×2个交叉光波导A1至D1形成的光开关的光路，以及由2×2个交叉光波导A2至D2形成的用于光可变衰减器的光电路。 连接到平面波导上的是致动器结构，并且致动器结构由用于光学开关的致动器部分和用于光学可变衰减器的致动器部分构成。 平面波导和致动器部分的光电路构成光开关，而平面波导2和致动器部分的光电路构成光可变衰减器。
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