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1. 发明专利

JP2005072737A Optical transmitting system 审中-公开
标题翻译：光传输系统
公开(公告)号：JP2005072737A
公开(公告)日：2005-03-17
申请号：JP2003296968
申请日：2003-08-21
申请人： Nippon Telegr & Teleph Corp , Ntt Electornics Corp , エヌティティエレクトロニクス株式会社 , 日本電信電話株式会社
发明人： SUGAWARA HIROHIKO , MURAGUCHI MASAHIRO , TOBA HIROSHI , FUKUSHIMA SEIJI , AKEYOSHI TOMOYUKI , SUZUKI SENTA , NAGASE AKIRA , ITO TOSHIO , SAKAMOTO TADASHI , SANO KOICHI , TOKUMITSU MASAMI , SAKAI YOSHIHISA , YAMABAYASHI YOSHIAKI , IWAMOTO RYUICHI , ISHII YOSHIKAZU
IPC分类号： G02B6/26 , G02B6/32 , G02B26/02 , H04B10/2507 , H04B10/2513 , H04B10/2581 , H04B10/524 , H04B10/02 , H04B10/18
摘要： PROBLEM TO BE SOLVED: To realize high-speed optical transmission at a distance longer than conventional distance by suppressing deterioration in wavelength due to mode dispersion of a multi-mode optical transmission path.
SOLUTION: Using a graded index type optical transmission path as an optical path, an excitation mechanism capable of exciting a specific mode is provided between an optical transmission section and an optical transmission path or midway along the optical transmission path, and a transmissive mechanism for allowing a specific mode to transmit is provided midway along the optical transmission path or between the transmission path and an optical receiver. According to this configuration, excitation of a specific low order mode is possible at a low loss, as well as the component of the low order mode can be selectively transmit at a low loss immediately before the optical transmitter even if one part is converted to the high order mode midway along the transmission path. Accordingly, the deterioration in wavelength due to mode dispersion of the multi-mode optical transmission path can be suppressed.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：通过抑制由多模光传输路径的模式色散引起的波长恶化，实现比常规距离更长的距离的高速光传输。解决方案：使用渐变折射率光传输路径作为光路，在光传输部分和光传输路径之间或沿着光传输路径的中途提供能够激发特定模式的激励机构，并且透射在光传输路径的中途或传输路径与光接收器之间设置允许特定模式发送的机制。根据该结构，能够以低损耗实现特定低阶模式的激励，并且即使将一个部分转换成为低频模式，也可以在光发射机之前以低损耗选择性地发送低阶模式的分量高阶模式沿传输路径中途。因此，可以抑制由于多模光传输路径的模式色散引起的波长的劣化。版权所有（C）2005，JPO＆NCIPI

2. 发明专利

JP2015027037A 光副搬送波の周波数変換器有权
标题翻译：光耦合器的频率转换器
公开(公告)号：JP2015027037A
公开(公告)日：2015-02-05
申请号：JP2013156737
申请日：2013-07-29
申请人：日本電信電話株式会社 , Nippon Telegr & Teleph Corp , 国立大学法人鹿児島大学 , Kagoshima Univ , 国立大学法人鹿児島大学
发明人： ITO TOSHIO , ENDO JUN , FUKUSHIMA SEIJI
IPC分类号： H04B10/2575 , G02F1/015 , H04B10/516
摘要：【課題】消費電力の大きい混合器を用いずに、光学的に信号を混合してIFを生成することが可能な光副搬送波の周波数変換器を提供すること。【解決手段】光副搬送波の周波数変換器1は、LD2aと、EAM3aと、LD2aに直流電流を供給するための定電流源4aと、EAM3aの動作点を制御するための定電圧源5aとを含み、LD2aは、第1の送信信号d1を入力し、第1の送信信号d1と、定電流源4aからの直流電流とに基づいて光信号を出力するように構成され、EAM3aは、動作点に応じてLD2aの光信号を変調し、EAM3aに与えられる第2の送信信号d2と第1の送信信号d1との和周波成分および差周波成分を含む光信号を出力するように構成される。【選択図】図2
摘要翻译：要解决的问题：提供一种光子载波频率转换器，其不需要使用大功率的混频器，可以通过光学混合信号来产生IF。解决方案：光子载波的频率转换器1包括LD 2a，EAM 3a，用于向LD 2a供给DC电流的恒流源4a和用于控制EAM 3a的工作点的恒压源5a。 LD 2a被配置为接收第一发送信号d1，并且基于第一发送信号d1输出光信号和来自恒流源4a的DC电流。 EAM 3a被配置为根据工作点调制LD 2a的光信号，并且输出包含第二发送信号d2的和频率分量和差分频率分量的光信号，以及给出的第一发送信号d1 EAM 3a。

3. 发明专利

JP2014154835A Optical transmitter 审中-公开
标题翻译：光学发射器
公开(公告)号：JP2014154835A
公开(公告)日：2014-08-25
申请号：JP2013025817
申请日：2013-02-13
申请人： Nippon Telegr & Teleph Corp , 日本電信電話株式会社
发明人： ENDO JUN , ITO TOSHIO , KANDA ATSUSHI
IPC分类号： H01S5/0683
摘要： PROBLEM TO BE SOLVED: To provide a steadily stable optical transmission waveform even when a return light phase changes in an element which suppresses return light noise by providing a waveguide to be optically connected to an active region of an external modulator integrated semiconductor laser and modulating a refractive index of the waveguide.SOLUTION: An optical transmitter comprises: a distributed feedback semiconductor laser which oscillates at an arbitrary wavelength; an electroabsorption modulator optically connected to the distributed feedback semiconductor laser; an optical branching filter which is connected to the distributed feedback semiconductor laser and branches light emitted from the distributed feedback semiconductor laser; an optical transmission line which is connected to the optical branching filter and feeds the light emitted from the distributed feedback semiconductor laser back to an active region of the distributed feedback semiconductor laser; a detection unit which is connected to the optical branching filter and detects a noise intensity of branched light of the optical branching filter; a control unit which is connected to the detection unit, and detects the deviation between an output value and a target value of the detection unit and operates so that the noise intensity of the light emitted from the distributed feedback semiconductor laser becomes minimum; and a drive unit which is connected to the control unit and applies an output from the control unit to the optical transmission line as an electric field.
摘要翻译：要解决的问题：即使当返回光相位通过提供光学连接到外部调制器集成半导体激光器的有源区域的波导并且调制回波光的相位改变抑制返回光噪声的元件时，也提供稳定的光传输波形波导的折射率。解决方案：光发射机包括：以任意波长振荡的分布式反馈半导体激光器; 光电连接到分布式反馈半导体激光器的电吸收调制器; 光分路滤波器，连接到分布式反馈半导体激光器并分支从分布反馈半导体激光器发出的光; 光传输线，其连接到所述光分路滤波器，并将从所述分布反馈半导体激光器发射的光馈送回所述分布式反馈半导体激光器的有源区; 检测单元，连接到所述光分路滤波器，并检测所述光分路滤波器的分支光的噪声强度; 连接到所述检测单元的控制单元，并且检测所述检测单元的输出值和目标值之间的偏差并进行操作，使得从分布式反馈半导体激光器发射的光的噪声强度变得最小; 以及驱动单元，其连接到控制单元，并将来自控制单元的输出作为电场施加到光传输线。

4. 发明专利

JP2014017608A Optical communication system, optical transmitter, and optical receiver 有权
标题翻译：光通信系统，光发射机和光接收机
公开(公告)号：JP2014017608A
公开(公告)日：2014-01-30
申请号：JP2012152630
申请日：2012-07-06
申请人： Nippon Telegr & Teleph Corp , 日本電信電話株式会社 , Kagoshima Univ , 国立大学法人鹿児島大学
发明人： ITO TOSHIO , FUKUSHIMA SEIJI
IPC分类号： H04B10/2575 , H04B10/54
摘要： PROBLEM TO BE SOLVED: To provide an optical communication system that makes multiplexing by Internet Protocol (IP) or wavelength or multiplexing to an existing IP network easy without being constrained by linearity of optical components.SOLUTION: An optical communication system in high-frequency transmission or radio transmission according to the invention is characterized by comprising: a high-frequency modulator which modulates transmission object data and generates an analog high-frequency signal; an A/D converter which converts the analog high-frequency signal into a first digital electric signal; an encoder which converts the first digital electric signal into a desired signal format; an E/O converter which converts the signal format into a digital optical signal; an O/E converter which converts the digital optical signal into a second digital electric signal; and a D/A converter (modem/codec) which converts the second digital electric signal into an analog electric signal.
摘要翻译：要解决的问题：提供一种通过因特网协议（IP）或波长或多路复用到现有IP网络的光通信系统，而不受光学部件的线性约束的限制。解决方案：高频传输中的光通信系统根据本发明的无线电传输的特征在于包括：高频调制器，其调制传输对象数据并产生模拟高频信号; A / D转换器，其将模拟高频信号转换成第一数字电信号; 编码器，其将所述第一数字电信号转换成期望的信号格式; 将信号格式转换为数字光信号的E / O转换器; O / E转换器，其将数字光信号转换成第二数字电信号; 以及将第二数字电信号转换为模拟电信号的D / A转换器（调制解调器/编解码器）。

5. 发明专利

JP2013219600A Optical transmission system 有权
标题翻译：光传输系统
公开(公告)号：JP2013219600A
公开(公告)日：2013-10-24
申请号：JP2012089415
申请日：2012-04-10
申请人： Nippon Telegr & Teleph Corp , 日本電信電話株式会社
发明人： ASAKA KOTA , ITO TOSHIO , ENDO JUN , YONEYAMA MIKIO
IPC分类号： H04B10/54
摘要： PROBLEM TO BE SOLVED: To provide an optical transmission system suppressing an influence of reflection return light of an optical transmission/reception system without using an expensive optical isolator, and always materializing fixed output light intensity.SOLUTION: An optical transmitter 1020 includes a modulator/optical amplifier integrated semiconductor laser 1001, a first lens 1009 and a second lens 1010. The modulator/optical amplifier integrated semiconductor laser 1001 is made by integrating a semiconductor laser 1002 for emitting laser oscillation light, an EA modulator 1003 for converting the laser oscillation light emitted from the semiconductor laser 1002 into modulation output light, and an SOA 1100 for amplifying output light intensity from the EA modulator 1003 on the same substrate. A second electric modulation signal generator 1101 for generating second and third electric modulation signals 1106 and 1107 having reversed polarity each other is connected to first and second bias tees 1050 and 1105 through first and second attenuators 1103 and 1104.
摘要翻译：要解决的问题：提供抑制光发送/接收系统的反射返回光的影响而不使用昂贵的光隔离器的光传输系统，并且始终实现固定的输出光强度。解决方案：光发射机1020包括调制器/ 光放大器集成半导体激光器1001，第一透镜1009和第二透镜1010.调制器/光放大器集成半导体激光器1001通过集成用于发射激光振荡光的半导体激光器1002，用于转换激光振荡光的EA调制器1003 从半导体激光器1002发射到调制输出光;以及SOA 1100，用于在同一衬底上放大来自EA调制器1003的输出光强度。用于产生具有相反极性的第二和第三电调制信号1106和1107的第二电调制信号发生器1101通过第一和第二衰减器1103和1104连接到第一和第二偏置三通110和1105。

6. 发明专利

JP2013183413A Isolatorless optical transmitter 有权
标题翻译：隔离光传输器
公开(公告)号：JP2013183413A
公开(公告)日：2013-09-12
申请号：JP2012047940
申请日：2012-03-05
申请人： Nippon Telegr & Teleph Corp , 日本電信電話株式会社
发明人： ITO TOSHIO , ASAKA KOTA , ENDO JUN , YONEYAMA MIKIO
IPC分类号： H04B10/54 , H01S5/50
摘要： PROBLEM TO BE SOLVED: To provide an isolatorless optical transmitter capable of suppressing deterioration in transmission characteristics caused by reflection return light without using an optical isolator.SOLUTION: An isolatorless optical transmitter comprises: an optical transmitter 1020; an optical fiber 1015 propagating modulation laser light (hereinafter, referred to as modulation output light) outputted from the optical transmitter 1020; and an optical receiver 1017 receiving the modulation output light propagated by the optical fiber 1015. A semiconductor optical amplifier 1022 is operated to reduce a degree of optical amplification by reducing current to about 50 mA, and to reduce a carrier density in the semiconductor optical amplifier 1022. When the carrier density is made be insufficient, the carrier density of the semiconductor optical amplifier increases and decreases with turning-on and turning-off of an optical signal, and thereby, a phase of a signal is slightly changed. As a result, phases of laser oscillation light of return light are accorded, and thereby, there is no deterioration in transmission characteristics like in Fig. 4.
摘要翻译：要解决的问题：提供一种无隔离器的光发射机，其能够在不使用光隔离器的情况下抑制由反射返回光引起的传输特性的劣化。解决方案：一种无隔离光学发射机，包括：光发射机1020; 传播从光发射机1020输出的调制激光（以下称为调制输出光）的光纤1015; 以及接收由光纤1015传播的调制输出光的光接收器1017.半导体光放大器1022通过将电流降低到约50mA来降低光放大度，并降低半导体光放大器中的载流子浓度 1022.当载流子密度不足时，半导体光放大器的载流子密度随着光信号的导通和关断而增加和减小，从而信号的相位稍微改变。结果，返回光的激光振荡光的相位被赋予，因此，传输特性没有劣化，如图3所示。 4。

7. 发明专利

JP2013077973A Radio tag system 有权
标题翻译：无线标签系统
公开(公告)号：JP2013077973A
公开(公告)日：2013-04-25
申请号：JP2011216501
申请日：2011-09-30
申请人： Nippon Telegr & Teleph Corp , 日本電信電話株式会社
发明人： TSUBOI HIDEYUKI , YOSHIOKA HIROTAKA , ANDOU ATSUYA , ITO TOSHIO , NAKAMURA HIROYUKI , OSADA YUTAKA , OKAMURA YOSUKE , SEKI RYUNOSUKE
IPC分类号： H04B1/59 , G05B23/02 , G06K17/00 , H04B5/02
摘要： PROBLEM TO BE SOLVED: To efficiently transmit a request signal by detecting approach of a maintenance/monitor target and to surely read a response signal transmitted from each tag by means of an on-vehicle reader.SOLUTION: A radio tag system is composed of a tag installed in a maintenance/monitor target and a reader installed on a mobile which passes by the maintenance/monitor target. In the radio tag system, a request signal is transmitted from a transmitter of the reader, the tag receiving the request signal transmits a response signal, and the response signal is received by a receiver of the reader. The mobile includes approach detection means which detects the approach of the maintenance/monitor target during movement, and the transmitter of the reader includes a function to transmit the request signal when the approach detection means detects the approach of the maintenance/monitor target. The tag includes a function to transmit the response signal using a predetermined channel and a transmission pattern when the request signal is received, and the receiver of the reader includes a function to receive the response signal that the tag has transmitted using the predetermined channel and the transmission pattern.
摘要翻译：要解决的问题：通过检测维护/监视目标的接近来有效地发送请求信号，并且通过车载阅读器可靠地读取从每个标签发送的响应信号。
解决方案：无线电标签系统由安装在维护/监视目标中的标签和安装在通过维护/监视目标的移动设备上的读取器组成。在无线电标签系统中，从读取器的发送器发送请求信号，接收请求信号的标签发送响应信号，并且响应信号由读取器的接收器接收。移动装置包括进场检测装置，其检测运动期间维护/监视目标的进近，并且当进近检测装置检测到维护/监视目标的进近时，读取器的发射器包括发送请求信号的功能。标签包括当接收到请求信号时使用预定信道和传输模式发送响应信号的功能，并且读取器的接收机包括接收标签已经使用预定信道发送的响应信号的功能，并且传输模式。版权所有（C）2013，JPO＆INPIT

8. 发明专利

JP2011060982A Multi-channel optical transmission light source 审中-公开
标题翻译：多通道光传输光源
公开(公告)号：JP2011060982A
公开(公告)日：2011-03-24
申请号：JP2009208785
申请日：2009-09-10
申请人： Nippon Telegr & Teleph Corp , 日本電信電話株式会社
发明人： KANAZAWA SHIGERU , ITO TOSHIO , OKI AKIRA
IPC分类号： H01S5/42
摘要： PROBLEM TO BE SOLVED: To provide a multi-channel optical transmission light source which compensates for an optical output, and is compact and fast at low power consumption and low cost.
SOLUTION: The multi-channel optical transmission light source has a VCSEL array 12 in which surface emitting lasers are integrated by four channels, and a multiplexer integration SOA array 14 obtained by integrating mirrors 15 by four channels, SOAs 13 by four channels for amplifying each light led from each of the mirrors 15, and a multiplexer 16 for multiplexing the light output from each of the SOAs 13. High frequency wirings 17 to the VCSEL array 12 are provided by four channels on a surface of the multiplexer integration SOA array 14 around the mirrors 15, and the VCSEL array 12 is mounted on the high frequency wirings 17 as a flip chip so that each light from each of the surface emitting lasers of the VCSEL array 12 is incident on the mirrors 15.
COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：提供补偿光输出的多通道光传输光源，并且以低功耗和低成本紧凑且快速。解决方案：多通道光传输光源具有VCSEL阵列12，其中表面发射激光器通过四个通道集成，并且通过将四个通道集成反射镜15获得的多路复用器集成SOA阵列14，由四个通道用于放大从每个反射镜15引出的每个光，以及多路复用器16，用于多路复用来自每个SO 13的光输出。高频布线17到VCSEL阵列12由复用器集成SOA的表面上的四个通道提供阵列14围绕反射镜15，并且VCSEL阵列12作为倒装芯片安装在高频布线17上，使得来自VCSEL阵列12的每个表面发射激光器的每个光入射在反射镜15上。版权所有（C）2011，JPO＆INPIT

9. 发明专利

JP2010287669A Semiconductor laser modulator differential type semiconductor device 审中-公开
标题翻译：半导体激光调制器差分型半导体器件
公开(公告)号：JP2010287669A
公开(公告)日：2010-12-24
申请号：JP2009139269
申请日：2009-06-10
申请人： Nippon Telegr & Teleph Corp , 日本電信電話株式会社
发明人： ITO TOSHIO , KANAZAWA SHIGERU
IPC分类号： H01S5/026 , H01S5/042
摘要： PROBLEM TO BE SOLVED: To provide a semiconductor laser modulator differential type semiconductor device that includes a beautiful eye opening.
SOLUTION: A semiconductor device including a semiconductor laser 1 and an EA modulator 2 on a semiconductor substrate includes a p-side electrode 22 and an n-side electrode 23 of the semiconductor laser 1 arranged on a surface side of the semiconductor laser 1, and a p-side electrode 36 of the EA modulator 2 arranged on a surface side. The semiconductor device includes an n-side electrode 37 on the EA modulator 2 side and an insulating layer provided between the semiconductor laser 1 and semiconductor substrate to separate the p-side electrode 22 and the n-side electrode 23 of the semiconductor laser 1 and the n-side electrode 37 of the EA modulator 2, and to separate the p-side electrode 22 of the semiconductor laser 1 and the n-side electrode 23 of the semiconductor laser 1 and the p-side electrode 36 of the EA modulator 2, and includes a differential electric signal applying means which applies differential electric signals to the EA modulator 2, and a sine wave electric signal applying means of applying a sine wave electric signal having the same frequency and phase with the differential electric signals to the semiconductor laser 1.
COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：提供一种包括美丽的眼睛打开的半导体激光调制器差分型半导体器件。解决方案：在半导体衬底上包括半导体激光器1和EA调制器2的半导体器件包括布置在半导体激光器的表面侧的半导体激光器1的p侧电极22和n侧电极23 1和EA调制器2的p侧电极36布置在表面侧。该半导体器件包括在EA调制器2侧的n侧电极37和设置在半导体激光器1和半导体衬底之间以将半导体激光器1的p侧电极22和n侧电极23分离的绝缘层和 EA调制器2的n侧电极37，并分离半导体激光器1的p侧电极22和半导体激光器1的n侧电极23和EA调制器2的p侧电极36 并且包括将差分电信号施加到EA调制器2的差分电信号施加装置和正弦波电信号施加装置，其将具有与差分电信号相同频率和相位的正弦波电信号施加到半导体激光器 1.版权所有（C）2011，JPO＆INPIT

10. 发明专利

JP2010278397A Direct-modulation semiconductor laser 有权
标题翻译：直接调制半导体激光器
公开(公告)号：JP2010278397A
公开(公告)日：2010-12-09
申请号：JP2009132268
申请日：2009-06-01
申请人： Nippon Telegr & Teleph Corp , 日本電信電話株式会社
发明人： ITO TOSHIO , KANAZAWA SHIGERU
IPC分类号： H01S5/042 , H01S5/026 , H01S5/12
摘要： PROBLEM TO BE SOLVED: To provide a direct-modulation semiconductor laser capable of obtaining a favorable eye opening. SOLUTION: The laser includes a first semiconductor laser 128 for outputting a first signal light 117 and a second semiconductor laser 127 for outputting a second signal light 113 including a wavelength absorbed into an active layer 122 of the first semiconductor laser 128 independently of each other, wherein the first semiconductor laser 128 and the second semiconductor laser 127 are serially disposed such that the second signal light 113 is incident upon the active layer 122, an NRZ signal current 129 of a transmission rate X1 is input, a sinusoidal signal current 111 of a frequency X2 using a one-bit time width of the transmission rate X1 as one cycle is input, and the phases of the NRZ signal current 129 and the sinusoidal signal current 111 are controlled to situate a local maximum point of the intensity of the second signal light 113 which will have a sinusoidal wave at the center of the time width of each bit of the first signal light 117. COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：提供能够获得良好的眼睛打开的直接调制半导体激光器。解决方案：激光器包括用于输出第一信号光117的第一半导体激光器128和用于输出包括吸收到第一半导体激光器128的有源层122中的波长的第二信号光113的第二半导体激光器127，彼此相对，其中第一半导体激光器128和第二半导体激光器127被串联地布置成使得第二信号光113入射到有源层122上，输入传输速率X1的NRZ信号电流129，正弦信号电流输入使用传输速率X1的一位时间宽度作为一个周期的频率X2的111，并且控制NRZ信号电流129和正弦信号电流111的相位以使局部最大点的强度第二信号光113将在第一信号光117的每个位的时间宽度的中心具有正弦波。版权所有（C）2011，JPO＆INPIT

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