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1. 发明申请

US20070216993A1 Optical Fiber Laser Using Rare Earth-Added Fiber And Wide Band Light Source 审中-公开
标题翻译：使用稀土光纤和宽带光源的光纤激光器
公开(公告)号：US20070216993A1
公开(公告)日：2007-09-20
申请号：US10591665
申请日：2005-03-04
申请人： Keiichi Aiso , Masateru Tadakuma , Yuichi Takushima
发明人： Keiichi Aiso , Masateru Tadakuma , Yuichi Takushima
IPC分类号： H01S3/00
CPC分类号： H01S3/1112 , H01S3/06712 , H01S3/06725 , H01S3/06791
摘要： A fiber laser includes in a resonator: a normal dispersion optical fiber; an anomalous dispersion optical fiber; a rare earth-doped optical fiber as a gain medium; and a mode locking mechanism, in which at least the rare earth-doped optical fiber is included as the normal dispersion optical fiber, and a length of the rare earth-doped optical fiber is set shorter than that of the anomalous dispersion optical fiber.
摘要翻译：光纤激光器包括谐振器：正常色散光纤; 异常色散光纤; 作为增益介质的稀土掺杂光纤; 以及至少包含稀土掺杂光纤作为普通色散光纤的模式锁定机构，并且稀土掺杂光纤的长度被设定为短于异常色散光纤的长度。

2. 发明授权

US08509613B2 Monitoring of optical transmission systems based on cross-correlation operation 有权
公开(公告)号：US08509613B2
公开(公告)日：2013-08-13
申请号：US12081294
申请日：2008-04-14
申请人： Yun Chur Chung , Yuichi Takushima
发明人： Yun Chur Chung , Yuichi Takushima
IPC分类号： H04B10/08
CPC分类号： H04B10/071
摘要： In optical communication systems, an optical signal which is modulated with a data signal is transmitted from an optical transmitter, and is launched into a fiber-optic transmission link. The present invention provides a method and an apparatus for the measurement of the distribution of the reflectivity along an optical transmission line implemented by using the signal processing based on the cross-correlation function between the data signal with which the optical transmitter is modulated and the back-reflected signal returned to the optical transmitter to provide the in-service monitoring of the fiber-optic transmission link.

3. 发明申请

US20090257743A1 Monitoring of optical transmission systems based on cross-correlation operation 有权
标题翻译：基于互相关运算的光传输系统监控
公开(公告)号：US20090257743A1
公开(公告)日：2009-10-15
申请号：US12081294
申请日：2008-04-14
申请人： Yun Chur Chung , Yuichi Takushima
发明人： Yun Chur Chung , Yuichi Takushima
IPC分类号： H04B17/00 , H04B10/08
CPC分类号： H04B10/071
摘要： In optical communication systems, an optical signal which is modulated with a data signal is transmitted from an optical transmitter, and is launched into a fiber-optic transmission link. The present invention provides a method and an apparatus for the measurement of the distribution of the reflectivity along an optical transmission line implemented by using the signal processing based on the cross-correlation function between the data signal with which the optical transmitter is modulated and the back-reflected signal returned to the optical transmitter to provide the in-service monitoring of the fiber-optic transmission link.
摘要翻译：在光通信系统中，从光发射机发送用数据信号调制的光信号，并发射到光纤传输链路中。本发明提供了一种用于测量沿着光传输线的反射率分布的方法和装置，其通过使用基于调制光发射机的数据信号与背面之间的互相关函数的信号处理反射的信号返回到光发射机，以提供光纤传输链路的在役监测。

4. 发明授权

US07388891B2 Wide bandwidth light source 失效
标题翻译：宽带宽光源
公开(公告)号：US07388891B2
公开(公告)日：2008-06-17
申请号：US11075425
申请日：2005-03-09
申请人： Noboru Uehara , Yuichi Takushima , Kentaro Yasunaka
发明人： Noboru Uehara , Yuichi Takushima , Kentaro Yasunaka
IPC分类号： H01S3/13
CPC分类号： H01S3/06791 , H01S3/005 , H01S3/08 , H01S3/09415 , H01S3/106 , H01S3/1109 , H01S3/1112 , H01S3/1305 , H01S3/1608 , H01S2301/08
摘要： PROBLEM TO BE SOLVED: to realize a wide bandwidth light source capable of a stable operation providing a less spectrum variation.SOLUTION: Optical pulses 202 outputted by this optical pulse-generating device 201 are split by optical coupler 210. The one of split optical pulses is inputted in white light-emitting device 204 to emit the white light having the wide bandwidth. The other split is inputted in optical band pass filter 212 in operation-stabilizing circuit 207. Optical detector 213 detects a signal level of a specific wavelength and input in feedback circuit 215 to generate first and second feedback signals 205 and 206. Ring resonator fiber laser 208 uses any one of them and controls a rotation angle of the waveplate to realize stabilization of the output.
摘要翻译：要解决的问题：实现能够提供较小频谱变化的稳定操作的宽带宽光源。解决方案：由该光脉冲发生装置201输出的光脉冲202由光耦合器210分开。分离光脉冲中的一个被输入到白色发光器件204中以发射具有宽带宽的白光。另一个分割被输入到操作稳定电路207中的光学带通滤波器212中。光检测器213检测特定波长的信号电平并在反馈电路215中输入以产生第一和第二反馈信号205和206。环形谐振器光纤激光器208使用它们中的任何一个，并且控制波片的旋转角度以实现输出的稳定。

5. 发明授权

US07450239B2 Optical pulse evaluation device and in-service optical pulse evaluation device 失效
标题翻译：光脉冲评估装置及在线光脉冲评估装置
公开(公告)号：US07450239B2
公开(公告)日：2008-11-11
申请号：US11094168
申请日：2005-03-31
申请人： Noboru Uehara , Yuichi Takushima , Yasuyuki Ozeki , Yoichi Hirota
发明人： Noboru Uehara , Yuichi Takushima , Yasuyuki Ozeki , Yoichi Hirota
IPC分类号： G01N21/00 , G01B9/02 , G01J3/45
CPC分类号： G01J11/00
摘要： An optical pulse evaluation device and an in-service optical pulse evaluation device is disclosed which are capable of characteristics evaluation of an optical pulse itself or a sample launched therein in a relatively high bit-rate region. The optical pulse evaluation device evaluates a pulse waveform expressing an optical intensity of the optical pulse, an instantaneous frequency of the optical pulse, or a modulated light prepared by modulating the optical pulse in a light source end. The optical pulse evaluation device also observes a waveform change after a known optical pulse is passed through a device such as an optical fiber to evaluate a waveform deterioration or a compensation behavior caused by the device. The in-service optical pulse evaluation device is capable of measuring a wavelength dispersion in an optical communication.
摘要翻译：公开了一种光脉冲评估装置和使用中的光脉冲评估装置，其能够在相对高的比特率区域中对光脉冲本身或其中发射的样本进行特性评估。光脉冲评价装置评价表示光脉冲的光强度，光脉冲的瞬时频率或通过调制光源端的光脉冲而制成的调制光的脉搏波形。在已知的光脉冲通过诸如光纤的装置之后，光脉冲评估装置还观察波形变化，以评估由该装置引起的波形劣化或补偿行为。使用中的光脉冲评估装置能够测量光通信中的波长色散。

6. 发明申请

US20050201432A1 Wide bandwidth light source 失效
标题翻译：宽带宽光源
公开(公告)号：US20050201432A1
公开(公告)日：2005-09-15
申请号：US11075425
申请日：2005-03-09
申请人： Noboru Uehara , Yuichi Takushima , Kentaro Yasunaka
发明人： Noboru Uehara , Yuichi Takushima , Kentaro Yasunaka
IPC分类号： H01S3/098 , H01S3/00 , H01S3/06 , H01S3/067 , H01S3/08 , H01S3/083 , H01S3/0941 , H01S3/10 , H01S3/106 , H01S3/13 , H01S3/136 , H01S3/16
CPC分类号： H01S3/06791 , H01S3/005 , H01S3/08 , H01S3/09415 , H01S3/106 , H01S3/1109 , H01S3/1112 , H01S3/1305 , H01S3/1608 , H01S2301/08
摘要： PROBLEM TO BE SOLVED: to realize a wide bandwidth light source capable of a stable operation providing a less spectrum variation. SOLUTION: Optical pulses 202 outputted by this optical pulse-generating device 201 are split by optical coupler 210. The one of split optical pulses is inputted in white light-emitting device 204 to emit the white light having the wide bandwidth. The other split is inputted in optical band pass filter 212 in operation-stabilizing circuit 207. Optical detector 213 detects a signal level of a specific wavelength and input in feedback circuit 215 to generate first and second feedback signals 205 and 206. Ring resonator fiber laser 208 uses any one of them and controls a rotation angle of the waveplate to realize stabilization of the output.
摘要翻译：要解决的问题：实现能够提供较小频谱变化的稳定操作的宽带宽光源。解决方案：由该光脉冲发生装置201输出的光脉冲202由光耦合器210分离。分离光脉冲之一被输入白色发光装置204，以发射具有宽带宽的白光。另一个分割被输入到操作稳定电路207中的光学带通滤波器212.光学检测器213检测特定波长的信号电平并在反馈电路215中输入以产生第一和第二反馈信号205和206.环形谐振器光纤激光器 208使用它们中的任何一个并且控制波片的旋转角度以实现输出的稳定。

7. 发明申请

US20050219543A1 Optical pulse evaluation device and in-service optical pulse evaluation device 失效
标题翻译：光脉冲评估装置及在线光脉冲评估装置
公开(公告)号：US20050219543A1
公开(公告)日：2005-10-06
申请号：US11094168
申请日：2005-03-31
申请人： Noboru Uehara , Yuichi Takushima , Yasuyuki Ozeki , Yoichi Hirota
发明人： Noboru Uehara , Yuichi Takushima , Yasuyuki Ozeki , Yoichi Hirota
IPC分类号： G01J3/26 , G01B9/02 , G01J9/00 , G01J11/00 , G01M11/00 , H04B10/07 , H04B10/079 , H04B10/508 , H04B10/524 , H04B10/556 , H04B10/58
CPC分类号： G01J11/00
摘要： To obtain an optical pulse evaluation device and an in-service optical pulse evaluation device, which are capable of characteristics evaluation of an optical pulse itself or a sample launched therein, in a relatively high bit-rate region. Optical pulse 42 output repeatedly from an optical pulse light source 43 at a frequency fREP passes through sample 93 n sample stage 91 to be scanned by tunable wavelength optical band pass filter 47. A detection result by photodiode 51 is input in phase detection circuit 45 accompanying with the reference frequency fREP and the result is operated by operation unit 58C of personal computer 52 to know a spectral phase and a spectral intensity of the optical pulse passed through sample 93. Correcting this by applying the operation result in the state, where sample 93 has been removed enables to evaluate characteristics such as deterioration of optical pulse 42 by using sample 93. It is also possible to evaluate a waveform of optical pulse 42 as a light source. The present invention can evaluate the optical pulse in in-service.
摘要翻译：为了获得在相对高的比特率区域中能够对光脉冲本身或其中发射的样本进行特性评估的光脉冲评估装置和在用光脉冲评估装置。从光脉冲光源43以频率fREP反复输出的光脉冲42通过样本93n样本台91，由可调波长光带通滤波器47进行扫描。光电二极管51的检测结果输入到相位检测电路45中参考频率fREP，并且结果由个人计算机52的操作单元58C操作，以知道通过样本93的光脉冲的光谱相位和光谱强度。通过将运算结果应用于状态下进行校正，其中样本 93已经被去除使得能够通过使用样本93来评估诸如光脉冲42的劣化的特性。还可以评估作为光源的光脉冲42的波形。本发明可以评估在使用中的光脉冲。

8. 发明授权

US06943951B2 Optical component and dispersion compensation method 失效
标题翻译：光学元件和色散补偿方法
公开(公告)号：US06943951B2
公开(公告)日：2005-09-13
申请号：US10275918
申请日：2001-05-10
申请人： Kazuro Kikuchi , Yuichi Takushima , Mark Kenneth Jablonski , Yuichi Tanaka , Haruki Kataoka , Hironori Tokita , Kenji Furuki , Noboru Higashi , Kazunari Sato , Shiro Yamashita
发明人： Kazuro Kikuchi , Yuichi Takushima , Mark Kenneth Jablonski , Yuichi Tanaka , Haruki Kataoka , Hironori Tokita , Kenji Furuki , Noboru Higashi , Kazunari Sato , Shiro Yamashita
IPC分类号： G02B5/28 , G02B6/12 , G02B6/132 , G02B6/34 , G02B27/10 , H04B10/2513 , G02B1/10
CPC分类号： G02B5/285 , G02B6/12007 , G02B6/132 , G02B6/29361 , G02B6/29394 , G02B27/142 , H04B10/25133
摘要： An optical component of the present invention is compensated its optical dispersion, including third order dispersion, at low loss using optical dispersion compensating element comprising multi-layer film. In the optical component, an optical dispersion compensating element and a functional element are connected in series along an optical path.
摘要翻译：使用包括多层膜的光学色散补偿元件，本发明的光学部件以低损耗补偿其包括三阶色散的光学色散。在光学部件中，光学色散补偿元件和功能元件沿光路串联连接。

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