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1. 发明专利

JP2003247895A SONOGRAM MEASURING APPARATUS 审中-公开
公开(公告)号：JP2003247895A
公开(公告)日：2003-09-05
申请号：JP2002048911
申请日：2002-02-26
申请人： AISIN SEIKI , UNIV NAGOYA
发明人： YOSHIDA MUTSUMI , NAGAI HIROYUKI , GOTO TOSHIO , NISHIZAWA NORIHIKO
IPC分类号： G01J3/10 , G01J3/26 , G01J11/00 , G02F1/11 , G02F1/365 , H01S3/00 , H01S3/06 , H01S3/098
摘要： PROBLEM TO BE SOLVED: To provide a sonogram measuring apparatus capable of continuously changing output period of a reference short pulse light while the optical path length of the reference short pulse light is made constant. SOLUTION: A short pulse light generating apparatus 2 comprises a fiber laser 11, an acoustooptic modulator 12, a polarization maintaining optical fiber F1, and an optical filter 15, etc. The soliton pulse of each short pulse light outputted from the short pulse light generating apparatus 2 is used as a reference short pulse light, which is superposed with a short pulse light, which is to be measured, whose spectrum is extracted using a wavelength selecting filter 42, on a PBS 32, and is then made incident on an avalanche photodiode 33. The signal from the avalanche photodiode 33 is observed with an oscilloscope 34. COPYRIGHT: (C)2003,JPO

2. 发明专利

JP2002372691A Short pulse light generating device and mutual correlation measurement device 审中-公开
标题翻译：短脉冲发光装置和相互关联测量装置
公开(公告)号：JP2002372691A
公开(公告)日：2002-12-26
申请号：JP2001178465
申请日：2001-06-13
申请人： Aisin Seiki Co Ltd , Univ Nagoya , アイシン精機株式会社 , 名古屋大学長
发明人： GOTO TOSHIO , NISHIZAWA NORIHIKO , YOSHIDA MUTSUMI , NAGAI HIROYUKI
IPC分类号： G02F1/01 , H01S3/10
摘要： PROBLEM TO BE SOLVED: To provide a short pulse light generating device of which the output time of a short pulse light is continuously varied while the optical path of the short pulse light is kept constant and to provide a mutual correlation measurement device in which the short pulse light generating device is used.
SOLUTION: The short pulse light generating device 2 is composed of a fiber laser 11, an acoustic and optical modulator 12, a polarized wave maintaining type optical fiber F1, an optical filter 15 or the like. The soliton pulse of each short pulse light outputted from the short pulse light generating device 2 is used as a reference short pulse, superimposed with a short pulse light to be measured on PBS32 and is made incident on an avalanche diode 33. Further, a signal outputted from the avalanche diode 33 is observed on an oscilloscope 34.
COPYRIGHT: (C)2003,JPO
摘要翻译：要解决的问题：提供短脉冲光发生装置，其中短脉冲光的输出时间连续变化，同时短脉冲光的光路保持恒定，并提供相互关联测量装置，其中短路使用脉冲光发生装置。解决方案：短脉冲光产生装置2由光纤激光器11，声光调制器12，偏振波保持型光纤F1，滤光器15等组成。将从短脉冲光发生装置2输出的每个短脉冲光的孤子脉冲用作参考短脉冲，与PBS32上要测量的短脉冲光叠加并入射到雪崩二极管33上。此外，信号在示波器34上观察到从雪崩二极管33输出的信号。

3. 发明专利

JP2008083118A Pulse light output device and method 审中-公开
标题翻译：脉冲光输出装置和方法
公开(公告)号：JP2008083118A
公开(公告)日：2008-04-10
申请号：JP2006260048
申请日：2006-09-26
申请人： Univ Nagoya , 国立大学法人名古屋大学
发明人： NISHIZAWA NORIHIKO , TAKAYANAGI JUN
IPC分类号： G02F1/365 , H01S3/06
摘要： PROBLEM TO BE SOLVED: To output an ultrashort pulse which has high intensity, a short pulse time width, and a beautiful waveform. SOLUTION: The pulse light output device 20 is composed of: a short pulse light source 22 which generates pulse light of picoseconds to femtoseconds in pulse time width and 1,560 nm in center wavelength; a pulse time width expansion fiber 24 which expands the time width of the pulse light; a fiber amplifier 26 which amplifies the intensity of the pulse light having the time width expanded; a large-diameter fiber 28 which receives the intensity-amplified pulse light and uses a soliton self-frequency shift to output a soliton pulse; and a wavelength filter 30 which removes light of 2 type and has high intensity and a beautiful waveform. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：输出具有高强度，短脉冲时间宽度和美丽波形的超短脉冲。
解决方案：脉冲光输出装置20由短脉冲光源22构成，短脉冲光源22以脉冲时间宽度产生皮秒的飞秒至中心波长为1,560nm的飞秒; 脉冲宽度扩展光纤24，其延长脉冲光的时间宽度; 放大时间宽度扩大的脉冲光的强度的光纤放大器26; 大直径光纤28，其接收强度放大脉冲光并使用孤子自频移输出孤子脉冲; 以及去除波长<1,560的光的波长滤光器30。因此，可以输出孤子脉冲，其具有高的强度和美丽的波形。版权所有（C）2008，JPO＆INPIT

4. 发明专利

JP2006126168A Distance-measuring equipment and distance-measuring technique 有权
标题翻译：距离测量设备和距离测量技术
公开(公告)号：JP2006126168A
公开(公告)日：2006-05-18
申请号：JP2005177482
申请日：2005-06-17
申请人： Univ Nagoya , 国立大学法人名古屋大学
发明人： NISHIZAWA NORIHIKO , GOTO TOSHIO
IPC分类号： G01S17/10
CPC分类号： G01S17/10 , G01S7/4817 , G01S7/4818 , G01S7/484 , G01S7/4865 , G01S7/487
摘要： PROBLEM TO BE SOLVED: To quickly measure the distance to an object, with high degree of accuracy.
SOLUTION: After the pulsed light from an ultrashort pulse fiber laser 22 has been branched into the reference light A and the signal light by optical branch equipment 24, the signal light is irradiated on an object 10 via a scanning miller device 28 to receive its reflected light or scattered light; while the reference light A is altered the optical path length via an optical path length adjusting section 30. Then, by detecting the degree of interference between the reference light A, the optical path length is altered and the scattered light B by a differential detector 40 as the interference signal and by calculating the distance from the scanning mirror device 28 to the object 10, based on the adjusted value from the optical path length adjusting section 30 corresponding to the optical path length, at which the interference signal is maximized; and the distance to the position where the pulsed light from the object 10 is irradiated can be measured.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：以高精度快速测量物体的距离。解决方案：在超短脉冲光纤激光器22的脉冲光已经被分支到参考光A和光分支设备24的信号光之后，信号光通过扫描铣刀装置28照射在物体10上，接收其反射光或散射光; 而参考光A通过光程长度调节部分30改变光路长度。然后，通过检测参考光A之间的干涉程度，光程长度被改变，并且通过差分检测器40改变散射光B 基于来自光路长度调整部30的调整值与干涉信号最大化的光路长度对应的干涉信号，并计算从扫描镜装置28到对象10的距离; 并且可以测量到来自物体10的脉冲光被照射的位置的距离。版权所有（C）2006，JPO＆NCIPI

5. 发明专利

JP2009169041A Supercontinium light source 审中-公开
标题翻译：超光源
公开(公告)号：JP2009169041A
公开(公告)日：2009-07-30
申请号：JP2008006500
申请日：2008-01-16
申请人： Nu System Kk , Nuシステム株式会社 , Osaka Univ , Univ Nagoya , 国立大学法人名古屋大学 , 国立大学法人大阪大学
发明人： NISHIZAWA NORIHIKO
IPC分类号： G02F1/365
摘要： PROBLEM TO BE SOLVED: To stably generate highly coherent supercontinium light including a visible wavelength region.
SOLUTION: The light source generates the supercontinium light including the visible wavelength region. The supercontinium light source is constituted of: a fiber laser 10 which generates coherent pulse light; a fiber amplifier 20 which inputs the pulse light output by the fiber laser to amplify the pulse light; a compensation fiber 30 with negative distribution characteristics for compensating time spreading by wavelength distribution of the pulse light output by the fiber amplifier to narrow down pulse width; nonlinear crystal 40 which inputs the pulse light output by the compensation fiber to set wavelength of the pulse light to a half; and a high nonlinear optical fiber 50 which inputs the pulse light output by the nonlinear crystal to convert the pulse light into the supercontinium light by a nonlinear optical effect.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：稳定地产生包括可见波长区域的高度连续的超连续光。解决方案：光源产生包括可见光波长区域的超连续光。超连续光源由以下部分构成：产生相干脉冲光的光纤激光器10; 光纤放大器20，输入由光纤激光器输出的脉冲光，以放大脉冲光; 具有负分布特性的补偿光纤30，用于通过由光纤放大器输出的脉冲光的波长分布来补偿时间扩展以缩小脉冲宽度; 非线性晶体40，其输入由补偿光纤输出的脉冲光，以将脉冲光的波长设定为一半; 以及高非线性光纤50，其输入由非线性晶体输出的脉冲光，以通过非线性光学效应将脉冲光转换成超连续光。版权所有（C）2009，JPO＆INPIT

6. 发明专利

JP2009222705A Size measurement device 有权
标题翻译：尺寸测量装置
公开(公告)号：JP2009222705A
公开(公告)日：2009-10-01
申请号：JP2008334517
申请日：2008-12-26
申请人： Osaka Univ , Tokyo Seimitsu Co Ltd , Univ Nagoya , 国立大学法人名古屋大学 , 国立大学法人大阪大学 , 株式会社東京精密
发明人： ARAI MASATOSHI , AOTO TOMOHIRO , NISHIZAWA NORIHIKO
IPC分类号： G01B11/02
CPC分类号： G01B11/0608 , G01B9/0209 , G01B11/2441 , G01B2290/35
摘要： PROBLEM TO BE SOLVED: To provide a dimension measuring device for measuring the surface height of a measurement object at high speed and high accuracy. SOLUTION: This dimension measuring device 1 includes a light division element 3 which divides light emitted from a white light source 2 into a measurement light flux having an optical path length according to the surface height of the measurement object and a reference light flux, a reference light scanning optical system 5 which changes the optical path length of the reference light flux, a detector 6 which detects the interference signals of both the light fluxes, and a controller 7 which determines the surface height of the measurement object from the optical path length of the reference light flux corresponding to the maximum of the interference signals. The reference light scanning optical systems 5 includes a rotation member 51, first and second reflection elements (53, 55) arranged to the rotation shaft 52 of the rotation member 51 so as to be center-point-symmetrical to each other, and beam direction change members (57-66) which guide the reference light flux so that when the reference light flux enters into either of the reflection elements, the reference light flux reflected by the reflection element enters the other reflection element in parallel with and reversely to the incidence direction for the former reflection element. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：提供一种用于以高速和高精度测量测量对象的表面高度的尺寸测量装置。解决方案：该尺寸测量装置1包括光分离元件3，其将从白色光源2发射的光分成具有根据测量对象的表面高度的光程长度的测量光束和参考光通量改变参考光束的光路长度的参考光扫描光学系统5，检测两个光束的干涉信号的检测器6和从光学器件确定测量对象的表面高度的控制器7 对应于干扰信号最大值的参考光通量的路径长度。参考光扫描光学系统5包括：旋转构件51，以旋转构件51的旋转轴52布置成彼此中心对称的第一和第二反射元件（53,55），以及光束方向引导参考光通量的改变构件（57-66），使得当参考光束进入任一个反射元件时，由反射元件反射的参考光束与入射平行并相反地进入另一个反射元件前方反射元件的方向。版权所有（C）2010，JPO＆INPIT

7. 发明专利

JP2008084904A Optical output device and method 审中-公开
标题翻译：光输出装置及方法
公开(公告)号：JP2008084904A
公开(公告)日：2008-04-10
申请号：JP2006260047
申请日：2006-09-26
申请人： Univ Nagoya , 国立大学法人名古屋大学
发明人： NISHIZAWA NORIHIKO
IPC分类号： H01S3/10
摘要： PROBLEM TO BE SOLVED: To output light which can be used as broadband light of a desired spectral width (wavelength width).
SOLUTION: The optical output device comprises a short pulse light source constituted as an ultrashort pulse fiber laser creating pulse light having a pulse width from picosecond to femtosecond and a central wavelength of 1,560 nm, an optical intensity modulator for sequentially modulating the intensity of pulse light from the short pulse light source, and an optical fiber for receiving pulse light having intensity modulated sequentially by the optical intensity modulator and creating periodic wavelength variation light consisting of pulse light having a central wavelength varying sequentially by nonlinear optical effect by soliton effect and Raman scattering wherein the intensity of pulse light is varied to saw-tooth waveform within an intensity range corresponding to a desired wavelength range as the intensity range of pulse light of the optical intensity modulator. Light having a periodically varying wavelength is thereby outputted and used as broadband light.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：输出可用作所需光谱宽度（波长宽度）的宽带光的光。解决方案：光输出装置包括短脉冲光源，其构成为具有从皮秒到飞秒的脉冲宽度和中心波长为1,560nm的脉冲光脉冲的超短脉冲光纤，用于依次调制强度的光强度调制器来自短脉冲光源的脉冲光的光纤，以及用于接收具有由光强度调制器依次调制的强度的脉冲光的光纤，并且产生由具有通过孤子效应的非线性光学效应依次变化的中心波长的脉冲光组成的周期性波长变化光和拉曼散射，其中脉冲光强度在对应于期望波长范围的强度范围内的锯齿波形变化为光强度调制器的脉冲光的强度范围。由此输出具有周期性变化的波长的光作为宽带光。版权所有（C）2008，JPO＆INPIT

8. 发明专利

JP2008002815A Wavelength variable pulse light generator, and optical tomographic measuring instrument using the same 审中-公开
标题翻译：波长可变脉冲发光器和光学测量仪器
公开(公告)号：JP2008002815A
公开(公告)日：2008-01-10
申请号：JP2006169699
申请日：2006-06-20
申请人： Univ Nagoya , 国立大学法人名古屋大学
发明人： NISHIZAWA NORIHIKO
IPC分类号： G01N21/17 , A61B10/00 , G01B11/24 , G02F1/35
摘要： PROBLEM TO BE SOLVED: To generate a pulse light with a wavelength greatly varying linearly accompanying the lapse of time, and to enhance performance of an optical tomographic measuring instrument that uses the pulse light. SOLUTION: An inspection light generating part 30 is constituted of a short-pulse light source 32 for generating the pulse light with a pulse width (time width), ranging from a picosecond (ps) unit to a femtosecond (fs) unit; a modulator 33 for regulating the frequency of the pulse light from the short-pulse light source 32; an amplifier 34 for amplifying an intensity of the pulse light from the modulator 33; a wide-band light generating optical fiber 35 for making the pulse light with the intensity amplified by the amplifier 34 brought into a super continuum (wide-band light) spread relatively flat of wide band of about 1200-2200 nm; and a pulse extending optical fiber 36 for making the super continuum brought into an inspection light with a wavelength varying linearly with respect to a change of the time, and fault information of an object 10 is measured by using the inspection light. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：产生具有随时间流逝呈线性变化的波长的脉冲光，并提高使用脉冲光的光学断层摄影测量仪的性能。解决方案：检查光产生部分30由短脉冲光源32构成，用于产生脉冲宽度（时间宽度）的脉冲光，范围从皮秒（ps）单位到飞秒（fs）单位 ; 用于调节来自短脉冲光源32的脉冲光的频率的调制器33; 用于放大来自调制器33的脉冲光强度的放大器34; 用于使具有由放大器34放大的强度的脉冲光进入超宽带光（宽带光）的宽带光产生光纤35相对平坦，宽约1200-2200nm的宽带; 并且用于使超连续体的脉冲延伸光纤36带入相对于时间变化线性变化的波长的检查光，并且通过使用检查光来测量对象10的故障信息。版权所有（C）2008，JPO＆INPIT

9. 发明专利

JP2002214654A POLARIZATION INTERFERENCE DEVICE 失效
公开(公告)号：JP2002214654A
公开(公告)日：2002-07-31
申请号：JP2001010069
申请日：2001-01-18
申请人： FUJITSU LTD , UNIV NAGOYA
发明人： YAMANE KAZUO , GOTO TOSHIO , NISHIZAWA NORIHIKO , MORI MASAKAZU
IPC分类号： G02F1/365
摘要： PROBLEM TO BE SOLVED: To provide a polarization interference device which can easily generate a photon-number squeezed light. SOLUTION: A 1/2-wavelength plate 1 converts linear polarized pulse light into two polarized light components which differ in intensity by rotating it by a specific angle, a 1st polarization holding optical fiber 2 propagates the two polarized light components to impose phase self-modulation depending upon the intensity, and the output light of a 2nd polarization holding optical fiber 3 which has the same length and characteristics with the 1st polarization holding optical fiber 2 and is connected to the 1st polarization holding optical fiber 2 in series while having the angle rotated by 90 deg. is rotated by a specific angle; and then a 1/2-wavelength plate 4 and a polarized light demultiplexer 5 extract only one polarized component of the output light to obtain the photon- number squeezed light.

10. 发明专利

JP2008216716A Supercontinuum light source 审中-公开
标题翻译：超光源
公开(公告)号：JP2008216716A
公开(公告)日：2008-09-18
申请号：JP2007055120
申请日：2007-03-06
申请人： Univ Nagoya , 国立大学法人名古屋大学
发明人： NISHIZAWA NORIHIKO
IPC分类号： G02F1/383
摘要： PROBLEM TO BE SOLVED: To stably generate wide-band, flat, low-noise, and high-coherent supercontinuum light.
SOLUTION: A pulse light oscillation unit 10 comprises a ring type laser oscillator 11 using an erbium-doped fiber, an amplifier 12, and an optical isolator 16. A high-intensity soliton generator 20 has a half-wavelength plate 21a, a polarization beam splitter 22, a half-wavelength plate 21b, a polarization holding single-mode fiber 23a, a polarization holding type wavelength-division multiplexing coupler 24, a polarization holding erbium-doped fiber 27, a polarization holding single-mode fiber 23b of 3 m in length, an isolator 262, a 1/4-wavelength plate 28, a half-wavelength plate 21c, and an optical filber 29. In addition, the output of an LD 25, generating laser light of 1480 nm as exciting light of erbium, and the optical isolator 262 is guided to the EDF 27 through the WDM 24. A supercontinuum light generator 30 comprises a normal-dispersion, high-nonlinearity optical fiber (ND-HNLF).
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：稳定地产生宽带，平坦，低噪声和高相干超连续光。解决方案：脉冲光振荡单元10包括使用铒掺杂光纤的环型激光振荡器11，放大器12和光隔离器16.高强度孤子发生器20具有半波长板21a，偏振光束分离器22，半波长板21b，偏振保持单模光纤23a，偏振保持型波分复用耦合器24，偏振保持掺铒光纤27，偏振保持单模光纤23b 长度为3m的隔离器262，1/4波长板28，半波长板21c和光学滤波器29.此外，产生1480nm的激光的LD 25的输出为激发铒光，光隔离器262通过WDM 24被引导到EDF 27.超连续谱光发生器30包括正分散，高非线性光纤（ND-HNLF）。版权所有（C）2008，JPO＆INPIT

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