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1. 发明授权

US06359724B1 Light generation method and light source 失效
标题翻译：光产生方法和光源
公开(公告)号：US06359724B1
公开(公告)日：2002-03-19
申请号：US09482165
申请日：2000-01-12
申请人： Yoshitada Katagiri , Shinji Nagaoka , Fumikazu Ohira , Ken-ichi Suzuki , Masamichi Fujiwara , Noboru Takachio
发明人： Yoshitada Katagiri , Shinji Nagaoka , Fumikazu Ohira , Ken-ichi Suzuki , Masamichi Fujiwara , Noboru Takachio
IPC分类号： H01S300
CPC分类号： H01S5/50 , H01S3/06795 , H01S3/083 , H01S3/106 , H01S5/1071 , H01S5/1078
摘要： The present invention provides a light generation method and a light source that are preferable in obtaining a single-mode light having high outputs, a small wavelength spectral bandwidth, and a low intensity noise. A white output from a white-light source and having wavelength components over a wide-band in a wavelength spectrum passes through an isolator and is then filtered by a disc-shaped optical filter. A transmitted light is input to a semiconductor optical amplifier having its polarization plane regulated by a polarization controller. An output from the amplifier passes through an isolator and is then filtered by a disc-shaped optical filter again to generate a single-mode light having a small spectral bandwidth and high outputs. Polarization control by the polarization controller corresponds to control of the polarization plane of a semiconductor laser in the semiconductor optical amplifier so as to obtain a maximum gain from the amplifier. This configuration enables a single-mode light having a small spectral bandwidth and high outputs to be easily generated at an arbitrary wavelength.
摘要翻译：本发明提供了一种在获得具有高输出，小波长频谱带宽和低强度噪声的单模光时优选的光生成方法和光源。来自白光源的白色输出并且在波长光谱中在宽带上具有波长分量通过隔离器，然后被盘形滤光器滤波。透射光被输入到具有由偏振控制器调节的偏振面的半导体光放大器。来自放大器的输出通过隔离器，然后再次被盘形滤光器滤波，以产生具有小光谱带宽和高输出的单模光。偏振控制器的极化控制对应于半导体光放大器中的半导体激光器的偏振面的控制，以便从放大器获得最大增益。该配置使得能够容易地以任意波长产生具有小光谱带宽和高输出的单模光。

2. 发明授权

US6157025A Disk shaped tunable optical filter 有权
标题翻译：盘形可调滤光片
公开(公告)号：US6157025A
公开(公告)日：2000-12-05
申请号：US174724
申请日：1998-10-19
申请人： Yoshitada Katagiri , Yoshiaki Tachikawa , Shinji Nagaoka , Fumikazu Ohira , Kazuo Aida , Ken-ichi Suzuki , Hiroshi Abe , Shingo Kawai , Hitoshi Obara
发明人： Yoshitada Katagiri , Yoshiaki Tachikawa , Shinji Nagaoka , Fumikazu Ohira , Kazuo Aida , Ken-ichi Suzuki , Hiroshi Abe , Shingo Kawai , Hitoshi Obara
IPC分类号： G02B6/34 , G02B7/00 , G02B26/00 , G02B27/44 , H01J40/14
CPC分类号： G02B6/4246 , G02B26/008 , G02B27/4244 , G02B6/29361 , G02B6/29395 , G02B5/20 , G02B6/2937 , G02B7/006
摘要： A disk shaped tunable optical filter is formed by a transparent substrate in a disk shape, and a filter layer formed on a top surface of the substrate, having such a filter characteristic that a transmission central wavelength varies along a circumferential direction as a monotonic function of a viewing angle. This disk shaped tunable optical filter can be advatageously utilized in realizing a wavelength discrimination apparatus, a reference wavelength light generation apparatus, an optical packet generation apparatus, and a tunable optical filter module, which are also disclosed.
摘要翻译：盘状可调谐滤光器由盘状的透明基板和形成在基板的顶面上的滤光层形成，该滤光片具有透光中心波长沿圆周方向变化的滤光器特性，作为单调功能视角。这种盘形可调光滤波器可以被广泛地用于实现波长鉴别装置，参考波长发光装置，光分组产生装置和可调光滤波器模块。

3. 发明授权

US06370169B1 Method and apparatus for controlling optical wavelength based on optical frequency pulling 失效
标题翻译：基于光频拉伸控制光波长的方法和装置
公开(公告)号：US06370169B1
公开(公告)日：2002-04-09
申请号：US09296082
申请日：1999-04-21
申请人： Wataru Imajuku , Yoshitada Katagiri
发明人： Wataru Imajuku , Yoshitada Katagiri
IPC分类号： H01J313
CPC分类号： G01J9/00
摘要： Optical wavelength control method and apparatus which are capable of controlling an optical wavelength of a light source with a central wavelength which is uncertain and unstable at nanometer order is disclosed. In the optical wavelength control apparatus, the control target light entered from the variable wavelength light source is scanned at a prescribed period and optical pulses having a phase corresponding to the optical wavelength of the control target light are obtained. Then, a phase difference between a phase of the optical pulses and a phase corresponding to a reference optical wavelength is detected, and the variable wavelength light source is controlled by feeding back the phase difference to the variable wavelength light source such that the optical wavelength of the control target light is controlled by an optical frequency pulling with respect to the reference optical wavelength according to the phase difference.
摘要翻译：公开了能够以纳米级不确定且不稳定的中心波长的光源的光波长控制的光波长控制方法和装置。在光波长控制装置中，从规定的周期扫描从可变波长光源入射的控制对象光，得到具有与控制对象光的光波长相对应的相位的光脉冲。然后，检测光脉冲的相位与对应于基准光波长的相位之间的相位差，并且通过将相位差反馈到可变波长光源来控制可变波长光源，使得可变波长光源的光波长根据相位差，通过相对于基准光波长的光频拉伸来控制控制对象光。

4. 发明授权

US07139491B2 Laser oscillator, optical communication method and system 失效
公开(公告)号：US07139491B2
公开(公告)日：2006-11-21
申请号：US11404472
申请日：2006-04-13
申请人： Yoshitada Katagiri , Etsu Hashimoto , Kenichi Suzuki
发明人： Yoshitada Katagiri , Etsu Hashimoto , Kenichi Suzuki
IPC分类号： H04B10/00
CPC分类号： H04B10/85 , H04K1/00 , H04L9/001 , H04L2209/08
摘要： Extremely advanced technology for scrambling an optical signal based on quantum mechanical fluctuation is used to provide a highly reliable optical communication method which can invalidate illicit activities such as wire-tapping, a system, and a laser oscillator which is used in the method and system. A transmitter side generates laser light, simultaneously oscillated at a plurality of wavelengths, the total number of generated photons being constant, and transmits a signal light comprising data which has been added to the light of the plurality of wavelengths; and at a receiving side, light, simultaneously oscillated at the plurality of wavelengths, is selected from the signal light, and the data is demodulated.

5. 发明授权

US5497390A Polarization mode switching semiconductor laser apparatus 失效
标题翻译：极化模式切换半导体激光装置
公开(公告)号：US5497390A
公开(公告)日：1996-03-05
申请号：US9930
申请日：1993-01-27
申请人： Hidenao Tanaka , Akinori Watabe , Junichi Shimada , Yoshitada Katagiri , Yoshio Suzuki
发明人： Hidenao Tanaka , Akinori Watabe , Junichi Shimada , Yoshitada Katagiri , Yoshio Suzuki
IPC分类号： G06K1/12 , G06K7/10 , G11B7/125 , G11B11/105 , H01S5/062 , H01S5/0625 , H01S5/0683 , H01S5/10 , H01S5/34 , H01S3/19
CPC分类号： B82Y20/00 , G06K1/126 , G06K7/10564 , G06K7/10584 , G11B7/127 , H01S5/0625 , H01S5/10 , G06K2207/1018 , G11B11/10532 , H01S2301/14 , H01S5/06236 , H01S5/0683 , H01S5/1003 , H01S5/3404
摘要： A semiconductor laser apparatus includes a semiconductor substrate, a first cladding layer, an active layer, a second cladding layer, a second electrode, and a pair of resonator mirrors. The semiconductor substrate has a first electrode on one surface. The first cladding layer is formed on the other surface of the semiconductor substrate. The active layer is placed on the cladding layer. The second cladding layer is placed on the active layer. The second electrode is placed on the second cladding layer. The pair of resonator mirrors are placed in a waveguide direction perpendicular to the surfaces of the semiconductor substrate to oppose each other. The active layer is constituted by a quantum well layer having a tensilely strain. The second electrode is separated into portions not less than two portions.
摘要翻译：半导体激光装置包括半导体基板，第一包层，有源层，第二包层，第二电极和一对谐振镜。半导体衬底在一个表面上具有第一电极。第一包层形成在半导体衬底的另一个表面上。有源层放置在包层上。第二包层放置在有源层上。第二电极被放置在第二覆层上。一对谐振器反射镜被放置在垂直于半导体衬底的表面的波导方向上以彼此相对。有源层由具有拉伸应变的量子阱层构成。第二电极被分成不少于两部分。

6. 发明授权

US07023887B2 Method and system for controlling optical wavelength based on optical frequency pulling 失效
标题翻译：基于光频拉伸控制光波长的方法和系统
公开(公告)号：US07023887B2
公开(公告)日：2006-04-04
申请号：US11062521
申请日：2005-02-22
申请人： Wataru Imajuku , Yoshitada Katagiri
发明人： Wataru Imajuku , Yoshitada Katagiri
IPC分类号： H01S3/13
CPC分类号： G01J9/00
摘要： Optical wavelength control method and apparatus which are capable of controlling an optical wavelength of a light source with a central wavelength which is uncertain and unstable at nanometer order is disclosed. In the optical wavelength control apparatus, the control target light entered from the variable wavelength light source is scanned at a prescribed period and optical pulses having a phase corresponding to the optical wavelength of the control target light are obtained. Then, a phase difference between a phase of the optical pulses and a phase corresponding to a reference optical wavelength is detected, and the variable wavelength light source is controlled by feeding back the phase difference to the variable wavelength light source such that the optical wavelength of the control target light is controlled by an optical frequency pulling with respect to the reference optical wavelength according to the phase difference.
摘要翻译：公开了能够以纳米级不确定且不稳定的中心波长的光源的光波长控制的光波长控制方法和装置。在光波长控制装置中，从规定的周期扫描从可变波长光源入射的控制对象光，得到具有与控制对象光的光波长相对应的相位的光脉冲。然后，检测光脉冲的相位与对应于基准光波长的相位之间的相位差，并且通过将相位差反馈到可变波长光源来控制可变波长光源，使得可变波长光源的光波长根据相位差，通过相对于基准光波长的光频拉伸来控制控制对象光。

7. 发明授权

US06695471B2 Method and apparatus for measuring temperature of movable object 失效
标题翻译：用于测量可移动物体温度的方法和装置
公开(公告)号：US06695471B2
公开(公告)日：2004-02-24
申请号：US10180655
申请日：2002-06-26
申请人： Etsu Hashimoto , Yoshitada Katagiri , Tetsuo Abe , Yoshio Suzuki
发明人： Etsu Hashimoto , Yoshitada Katagiri , Tetsuo Abe , Yoshio Suzuki
IPC分类号： G01K116
CPC分类号： G01K7/42
摘要： A temperature meter for measuring temperature of a measurement target object to which a temperature sensor cannot be fixed directly is formed by a temperature sensor configured to measure an observed temperature in a vicinity of the measurement target object; a timer configured to measure a temperature observation time; and a calculation processor configured to calculate the temperature of the measurement target object according to the observed temperature and the temperature observation time by carrying out a prescribed calculation processing.
摘要翻译：用于测量温度传感器不能直接固定到的测量对象物体的温度的温度计由测量被测物体附近的观察温度的温度传感器构成; 定时器，被配置为测量温度观察时间; 以及计算处理器，被配置为通过执行规定的计算处理来根据观察到的温度和温度观测时间来计算测量对象物体的温度。

8. 发明授权

US4860276A Micro optical head with an optically switched laser diode 失效
标题翻译：具有光开关激光二极管的微光头
公开(公告)号：US4860276A
公开(公告)日：1989-08-22
申请号：US97560
申请日：1987-09-16
申请人： Hiroo Ukita , Yoshitada Katagiri , Renshi Sawada , Yuuji Uenishi , Yoshihiro Isomura , Tomoyuki Toshima , Keisuke Mise
发明人： Hiroo Ukita , Yoshitada Katagiri , Renshi Sawada , Yuuji Uenishi , Yoshihiro Isomura , Tomoyuki Toshima , Keisuke Mise
IPC分类号： G11B7/12 , G11B7/125 , G11B7/13 , H01S3/00 , H01S5/00 , H01S5/026 , H01S5/065 , H01S5/10 , H01S5/14 , H01S5/40
CPC分类号： G11B7/127 , G11B7/122 , G11B7/13 , H01S5/10 , H01S5/14 , H01S3/005 , H01S5/0028 , H01S5/005 , H01S5/0262 , H01S5/065 , H01S5/4031
摘要： A micro optical head, for optically reading and/or writing digital data on a recording medium in which digital data 1 and 0, corresponding to a high reflection factor and a low reflection factor, is composed of a self-coupled semiconductor laser located close to the recording medium. A bias current of the laser is determined so that it is smaller than a first threshold current, in which the medium has a low reflection factor, and is higher than a second threshold current, in which the medium has a high reflection factor. Output light of the laser is either strong stimulated emission light, corresponding to the high reflection factor, or weak spontaneous emission light, corresponding to the low reflection factor. The present head is carried on a flying slider with a spacing length less than several .mu.m which provides a small beam spot of about 1 .mu.m, and has an excellent signal to noise ratio. A photodetector for sensing the output of the laser may be carried on the same semiconductor substrate as that of the laser.
摘要翻译：一种微光学头，用于在记录介质上光学读取和/或写入数字数据，其中对应于高反射因数和低反射系数的数字数据1和0由接近于...的自耦半导体激光器组成记录介质。确定激光器的偏置电流，使得其小于第一阈值电流，其中介质具有低反射系数，并且高于其中介质具有高反射系数的第二阈值电流。激光的输出光是对应于低反射因子的强激发光，对应于高反射因子或弱自发发光。当前的头部承载在间隔长度小于几μm的飞行滑块上，其提供约1μm的小束斑，具有优异的信噪比。用于感测激光器的输出的光电检测器可以在与激光器相同的半导体衬底上承载。

9. 发明授权

US06909732B2 Method and apparatus for controlling optical wavelength based on optical frequency pulling 失效
标题翻译：基于光频拉伸控制光波长的方法和装置
公开(公告)号：US06909732B2
公开(公告)日：2005-06-21
申请号：US10060999
申请日：2002-01-29
申请人： Wataru Imajuku , Yoshitada Katagiri
发明人： Wataru Imajuku , Yoshitada Katagiri
IPC分类号： G01J9/00 , H01S3/13
CPC分类号： G01J9/00
摘要： Optical wavelength control method and apparatus which are capable of controlling an optical wavelength of a light source with a central wavelength which is uncertain and unstable at nanometer order is disclosed. In the optical wavelength control apparatus, the control target light entered from the variable wavelength light source is scanned at a prescribed period and optical pulses having a phase corresponding to the optical wavelength of the control target light are obtained. Then, a phase difference between a phase of the optical pulses and a phase corresponding to a reference optical wavelength is detected, and the variable wavelength light source is controlled by feeding back the phase difference to the variable wavelength light source such that the optical wavelength of the control target light is controlled by an optical frequency pulling with respect to the reference optical wavelength according to the phase difference.
摘要翻译：公开了能够以纳米级不确定且不稳定的中心波长的光源的光波长控制的光波长控制方法和装置。在光波长控制装置中，从规定的周期扫描从可变波长光源入射的控制对象光，得到具有与控制对象光的光波长相对应的相位的光脉冲。然后，检测光脉冲的相位与对应于基准光波长的相位之间的相位差，并且通过将相位差反馈到可变波长光源来控制可变波长光源，使得可变波长光源的光波长根据相位差，通过相对于基准光波长的光频拉伸来控制控制对象光。

10. 发明授权

US06475557B1 Method for manufacturing optical filter 失效
标题翻译：光学滤波器的制造方法
公开(公告)号：US06475557B1
公开(公告)日：2002-11-05
申请号：US09383659
申请日：1999-08-26
申请人： Kunihiko Mori , Yoshitada Katagiri
发明人： Kunihiko Mori , Yoshitada Katagiri
IPC分类号： B05D506
CPC分类号： C23C14/044 , B29D11/00634 , G02B5/22
摘要： A method for manufacturing an optical filter capable of manufacturing an optical filter in such a manner that the transmission wavelength varies linearly with respect to the angle &thgr; in the rotation direction of the substrate and that almost the entire range of the angle &thgr; is utilizable as the optical filter. A mask capable of being rotated relatively with respect to the substrate coaxially on a plane parallel to the substrate, which is either having an aperture extending along a radius direction with an aperture angle &phgr; or itself extending along a radius direction to cover an angle &phgr;, is provided over the substrate. Then, the mask is relatively rotated with respect to the substrate at least once at a non-constant angular speed during a formation of a single layer or multiple layers on the substrate, while depositing a dielectric material in a single layer or multiple layers on the substrate from the mask side within a deposition chamber.
摘要翻译：一种用于制造能够以透射波长相对于基板的旋转方向上的角度θ线性变化的方式制造滤光器的光学滤波器的方法，并且角度θ的几乎整个范围可用作滤光片能够在平行于基板的平面上相对于基板相对地旋转的掩模，该掩模具有沿着半径方向延伸的孔径，该孔径具有孔径角度或其本身沿着半径方向延伸以覆盖角度phi，设置在基板上。然后，在基板上单层或多层形成期间，掩模相对于衬底至少一次以非恒定的角速度相对旋转，同时在第一层或第二层上沉积介电材料衬底从沉积室内的掩模侧。

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