公开(公告)号：US06480312B1

公开(公告)日：2002-11-12

申请号：US09212269

申请日：1998-12-16

申请人： Toshiaki Okuno ,  Masashi Onishi ,  Masayuki Nishimura

发明人： Toshiaki Okuno ,  Masashi Onishi ,  Masayuki Nishimura

IPC分类号： H04B1012

CPC分类号： H04B10/2972 ,  H04B10/2525 ,  H04B2210/256

摘要： The present invention provides a dispersion compensating system for bi-directional optical communication using wavelength division multiplexing transmission. Signal lights bi-directionally pass through a signal optical fiber which comprises a dispersion compensating fiber working bi-directionally.

摘要翻译： 本发明提供一种使用波分复用传输的双向光通信的色散补偿系统。 信号灯双向通过信号光纤，其包括双向工作的色散补偿光纤。

公开(公告)号：US20090152475A1

公开(公告)日：2009-06-18

申请号：US11887471

申请日：2007-01-19

申请人： Takashi Sasaki ,  Kazumasa Makihara ,  Toshiaki Okuno ,  Masashi Onishi ,  Masaaki Hirano ,  Tetsuya Nakanishi

发明人： Takashi Sasaki ,  Kazumasa Makihara ,  Toshiaki Okuno ,  Masashi Onishi ,  Masaaki Hirano ,  Tetsuya Nakanishi

IPC分类号： G21G5/00 ,  G02B6/00 ,  G06K9/74

CPC分类号： G01N21/359 ,  G01J3/10 ,  G01N21/643 ,  G01N2201/08 ,  G02F1/35 ,  G02F2001/3528

摘要： The present invention relates to an analyzing apparatus and the like having a structure for enabling spectrometry and the like up to a longer frequency region while being excellent in practicality. The analyzing apparatus comprises a light source section and a light-detecting section. The light source section includes a seed light source emitting laser light, and a solid highly nonlinear optical fiber generating SC light in response to the input of the laser light, and thereby emitting the SC light as irradiation light to an object. The light-detecting section detects light to be detected from the object irradiated with the irradiation light. Here, the seed light source in the light source section emits pulsed light having a center wavelength within the range of 1.3 μm to 1.8 μm.

摘要翻译： 本发明涉及一种分析装置等，其具有能够进行光谱测定等直到较长频率区域的结构，同时实用性优异。 分析装置包括光源部分和光检测部分。 光源部分包括发射激光的种子光源和响应于激光的输入而产生SC光的固体高度非线性光纤，从而将SC光作为照射光发射到物体。 光检测部分从照射光照射的物体中检测待检测的光。 这里，光源部中的种子光源发射中心波长在1.3μm〜1.8μm范围内的脉冲光。

公开(公告)号：US06483633B2

公开(公告)日：2002-11-19

申请号：US09901451

申请日：2001-07-10

申请人： Masashi Onishi ,  Toshiaki Okuno

发明人： Masashi Onishi ,  Toshiaki Okuno

IPC分类号： H01S330

CPC分类号： H01S3/302 ,  H01S3/06754 ,  H01S3/094003

摘要： A Raman amplifier applicable to a wavelength division multiplexing optical transmission system is proposed. The Raman amplifier, which can make good use of a wavelength range, comprises an optical fiber for Raman amplification and a pump light introducing means. The zero-dispersion wavelength of the optical fiber and the wavelength of the pump light are nearly equal. The wavelength of pump light is preferably in the range where the absolute magnitude of the chromatic dispersion of the optical fiber is less than 0.3 ps.nm−1.km−1. A range near a zero-dispersion wavelength cannot be utilized as a signal range because waveform deterioration of signal light occurs due to four wave mixing. This range can be utilized effectively as a wavelength range of exciting light for Raman amplification.

摘要翻译： 提出了适用于波分复用光传输系统的拉曼放大器。 可以充分利用波长范围的拉曼放大器包括用于拉曼放大的光纤和泵浦光引入装置。 光纤的零色散波长和泵浦光的波长几乎相等。 泵浦光的波长优选在光纤的色散的绝对幅度小于0.3ps.nm-1.km-1的范围内。 靠近零色散波长的范围不能用作信号范围，因为由于四次波混合而发生信号光的波形恶化。 该范围可以有效地用作拉曼放大的激发光的波长范围。

公开(公告)号：US5960146A

公开(公告)日：1999-09-28

申请号：US899571

申请日：1997-07-24

申请人： Toshiaki Okuno ,  Masashi Onishi ,  Masayuki Nishimura ,  Satoki Kawanishi ,  Hidehiko Takara ,  Kunihiko Mori

发明人： Toshiaki Okuno ,  Masashi Onishi ,  Masayuki Nishimura ,  Satoki Kawanishi ,  Hidehiko Takara ,  Kunihiko Mori

IPC分类号： G02F1/35 ,  G02F1/365 ,  G02B6/16

CPC分类号： G02B6/02247 ,  G02B6/0228 ,  G02F1/3511 ,  G02F1/365 ,  G02B6/02228

摘要： High peak pulse light is incident on an optical fiber having a dispersion decreasing region which serves as a main region for generating supercontinuum or idler light and in which the chromatic dispersion does not increase but at least partially decreases in the direction in which light travels. The fiber can be applied to broad band width idler light generation with both light transmission directions. Four wave mixing upon incidence of the light on the dispersion decreasing region of the optical fiber are efficiently obtained.

摘要翻译： 高峰脉冲光入射到具有作为用于产生超连续光或空载光的主要区域的色散减小区域的光纤上，并且其中色散不会增加但在光行进方向上至少部分地减小。 光纤可以应用于具有两个光传输方向的宽带宽的惰轮光产生。 有效地获得光入射到光纤的色散减少区域上的四波混合。

公开(公告)号：US20080212091A1

公开(公告)日：2008-09-04

申请号：US12010212

申请日：2008-01-22

申请人： Masato Tanaka ,  Tetsuya Nakanishi ,  Tetsuya Haruna ,  Masaaki Hirano ,  Toshiaki Okuno ,  Takashi Sasaki ,  Masashi Onishi

发明人： Masato Tanaka ,  Tetsuya Nakanishi ,  Tetsuya Haruna ,  Masaaki Hirano ,  Toshiaki Okuno ,  Takashi Sasaki ,  Masashi Onishi

IPC分类号： G01J3/447 ,  H01S3/10

CPC分类号： G01J3/10 ,  G01J3/02 ,  G01J3/0205 ,  G01J3/0208 ,  G01J3/021 ,  G01J3/0218 ,  G01J3/0224 ,  G01J3/0229 ,  G01J3/0297 ,  G01J3/06 ,  G01J3/14 ,  G01J3/1895 ,  G01J3/26 ,  G01J3/433 ,  G01J2003/065

摘要： A light source unit and a spectrum analyzer are provided in which the influence of interference can be reduced under conditions where light is separated into spectral components. A spectrum analyzer 1 is equipped with a light source unit 2 for irradiating light onto sample A, a detector unit 3 for detecting the light reflected, scattered, or transmitted from the sample A, and a sample stage 4 on which a sample A is placed. A wide band light source 20 generates wide band light P1 such as supercontinuum light (SC light). Also, the light source unit 2 has an interference suppressing means for suppressing the interference of each wavelength component of the wide band light P1.

摘要翻译： 提供了一种光源单元和频谱分析仪，其中在将光分离成光谱分量的条件下可以降低干扰的影响。 频谱分析仪1具备用于向样品A照射光的光源单元2，检测从样品A反射，散射或透射的光的检测器单元3和放置样品A的样品台4 。 宽带光源20产生诸如超连续光（SC light）的宽带光P 1。 此外，光源单元2具有用于抑制宽带光P 1的每个波长分量的干扰的干扰抑制装置。

公开(公告)号：US06888669B2

公开(公告)日：2005-05-03

申请号：US10286864

申请日：2002-11-04

申请人： Masashi Onishi ,  Toshiaki Okuno

发明人： Masashi Onishi ,  Toshiaki Okuno

IPC分类号： G02B6/02 ,  G02F1/35 ,  H01S3/067 ,  H01S3/094 ,  H01S3/30 ,  H04B10/2507 ,  H04B10/2537 ,  H04B10/2557 ,  H04B10/2563 ,  H04B10/29 ,  H04B10/293 ,  H01S3/00

CPC分类号： H01S3/302 ,  H01S3/06754 ,  H01S3/094003

摘要： A Raman amplifier applicable to a wavelength division multiplexing optical transmission system is proposed. The Raman amplifier, which can make good use of a wavelength range, comprises an optical fiber for Raman amplification and a pump light introducing means. The zero-dispersion wavelength of the optical fiber and the wavelength of the pump light are nearly equal. The wavelength of pump light is preferably in the range where the absolute magnitude of the chromatic dispersion of the optical fiber is less than 0.3 ps·nm−1·km−1. A range near a zero-dispersion wavelength cannot be utilized as a signal range because waveform deterioration of signal light occurs due to four wave mixing. This range can be utilized effectively as a wavelength range of exciting light for Raman amplification.

摘要翻译： 提出了适用于波分复用光传输系统的拉曼放大器。 可以充分利用波长范围的拉曼放大器包括用于拉曼放大的光纤和泵浦光引入装置。 光纤的零色散波长和泵浦光的波长几乎相等。 泵浦光的波长优选在光纤的色散的绝对幅度小于0.3ps.nm -1的范围内。 靠近零色散波长的范围不能用作信号范围，因为由于四次波混合而发生信号光的波形恶化。 该范围可以有效地用作拉曼放大的激发光的波长范围。

公开(公告)号：US06347174B1

公开(公告)日：2002-02-12

申请号：US09297173

申请日：1999-07-06

申请人： Masashi Onishi ,  Toshiaki Okuno ,  Shinji Ishikawa ,  Tomonori Kashiwada ,  Masayuki Nishimura

发明人： Masashi Onishi ,  Toshiaki Okuno ,  Shinji Ishikawa ,  Tomonori Kashiwada ,  Masayuki Nishimura

IPC分类号： H04N591

CPC分类号： G02B6/03644 ,  G02B6/02028 ,  G02B6/02242 ,  G02B6/02276 ,  G02B6/0228 ,  G02B6/03627 ,  G02B6/03655 ,  G02B6/105 ,  G02F1/383

摘要： The present invention relates to a nonlinear optical fiber which can generate a nonlinear optical phenomenon with high efficiency, an optical fiber coil wound with the nonlinear optical fiber, and a wavelength converter equipped with the nonlinear optical fiber. In particular, the nonlinear optical fiber according to the present invention has, as characteristics with respect to input light having a predetermined wavelength, a mode field diameter of 5 &mgr;m or less, a polarization mode dispersion of 1 ps/km½ or less or a fixed plane of polarization, a zero-dispersion wavelength of not less than 1.5 &mgr;m but not greater than 1.6 &mgr;m, a cutoff wavelength of not less than 1.4 &mgr;m but not greater than 1.7 &mgr;m at a length of 2 m, a transmission loss of 3 dB/km or less, and a nonlinear coefficient of 10/W/km or more. As a result of this configuration, the nonlinear optical fiber generates, with high efficiency, desirable converted light occurring upon the nonlinear phenomenon.

摘要翻译： 本发明涉及一种能够高效率地产生非线性光学现象的非线性光纤，与非线性光纤缠绕的光纤线圈以及配备非线性光纤的波长转换器。 特别地，根据本发明的非线性光纤作为具有预定波长的输入光的特性，模场直径为5um以下，偏振模色散为1ps / km 1/2以下或固定 偏振平面，零分散波长不小于1.5μm但不大于1.6μm，截止波长不小于1.4μm，但不大于1.7μm，长度为2μm，传输损耗为3dB / km以下，非线性系数为10 / W / km以上。 作为该结构的结果，非线性光纤以非线性现象产生期望的转换光，高效率地产生。

公开(公告)号：US20090012405A1

公开(公告)日：2009-01-08

申请号：US11664979

申请日：2006-11-17

申请人： Takemi Hasegawa ,  Takashi Iwasaki ,  Toshiaki Okuno ,  Masashi Onishi

发明人： Takemi Hasegawa ,  Takashi Iwasaki ,  Toshiaki Okuno ,  Masashi Onishi

IPC分类号： A61B6/00

CPC分类号： A61B5/0086 ,  A61B5/0084 ,  A61B90/36 ,  A61B2090/373

摘要： An imaging system 1 comprises: an illumination light source unit 10 that emits an illumination light having a wavelength in a near-infrared range; an illumination optical system 20 that illuminates an observed object 90 with the illumination light emitted from the illumination light source unit 10; an imaging optical system 30 that guides as a physical body light the illumination light that has been illuminated by the illumination optical system 20 onto the observed object 90 and has been scattered, reflected, or refracted thereby; and an imaging unit 40 that has an imaging sensitivity in a wavelength band of a near-infrared range, receives the physical body light arrived after being guided by the imaging optical system 30, and images the image of the observed object 90. The imaging unit 40 receives the physical body light after the light has passed through water and hemoglobin.

摘要翻译： 成像系统1包括：照射光源单元10，其发射具有近红外范围的波长的照明光; 照明光学系统20，其利用从照明光源单元10发射的照明光照亮被观察物体90; 作为物理体引导的成像光学系统30将由照明光学系统20照射的照明光照射到被观察物体90上并被散射，反射或折射; 以及在近红外范围的波长带中具有成像灵敏度的成像单元40接收在被成像光学系统30引导之后到达的物理体光，并对观察对象90的图像进行成像。成像单元 40在光线通过水和血红蛋白后接收身体的光线。

公开(公告)号：US06661958B2

公开(公告)日：2003-12-09

申请号：US09986864

申请日：2001-11-13

申请人： Masaaki Hirano ,  Masashi Onishi ,  Toshiaki Okuno

发明人： Masaaki Hirano ,  Masashi Onishi ,  Toshiaki Okuno

IPC分类号： G02B602

CPC分类号： G02B6/03627 ,  C03B37/01211 ,  C03B37/01217 ,  C03B37/01228 ,  C03B37/01231 ,  C03B37/01248 ,  C03B2201/12 ,  C03B2201/31 ,  C03B2203/22 ,  C03B2203/23 ,  C03B2203/31 ,  C03B2203/36 ,  C03C13/045 ,  G02B6/02028 ,  G02B6/02257 ,  G02B6/02271 ,  G02B6/02285 ,  G02B6/105 ,  G02F1/3536 ,  G02F1/365 ,  G02F1/395 ,  H01S3/06716 ,  H01S3/06729 ,  H01S3/06754

摘要： Employed as a structure of a highly nonlinear optical fiber (nonlinear optical fiber) is a double-cladding structure in which a first cladding region 20 and a second cladding region 30 are disposed on the outer periphery of a core region 10. Since the double-cladding structure is employed, the cutoff wavelength &lgr;c can sufficiently be shortened even when, in order to increase the nonlinear coefficient &ggr;, the concentration of GeO2 added into the core is enhanced so as to raise the nonlinear refractive index, or the relative refractive index difference between the core and cladding is increased so as to reduce the effective area Aeff. This realizes an optical fiber or nonlinear optical fiber shortening its cutoff wavelength while having a sufficient nonlinearity, an optical amplifier and wavelength converter using the same, and a method of making an optical fiber.

摘要翻译： 作为高度非线性的光纤（非线性光纤）的结构，是在芯区域10的外周配置有第一包层区域20和第二包层区域30的双包层结构。 使用包层结构，即使为了增加非线性系数γ，即使增加添加到芯中的GeO 2的浓度也增加了非线性折射率或相对折射率差，即使为了提高非线性系数γ，也可以充分缩短截止波长lambdac 在芯和包层之间增加以减少有效面积Aeff。 这实现了具有足够的非线性的光纤或非线性光纤缩短其截止波长，使用其的光放大器和波长转换器以及制造光纤的方法。

公开(公告)号：US08054537B2

公开(公告)日：2011-11-08

申请号：US11883364

申请日：2007-01-17

申请人： Toshiaki Okuno

发明人： Toshiaki Okuno

IPC分类号： H01S3/10 ,  G02F1/35

CPC分类号： G02F1/3513 ,  G02F2001/3503 ,  G02F2001/3528

摘要： The present invention relates to a light source apparatus that has a base structure capable of generating SC light and further having a structure that enables the shaping of the spectral waveform of the SC light, power adjustment of the SC light, or adjustment of the frequency of repetition of the pulse train that contains the SC light. For example, a light source apparatus that enables shaping of spectral waveforms comprises a seed light source that emits seed light which is a pulse train or continuous light; an optical fiber that generates SC light from the seed light, and spectrum shaping means for completely or partially changing the spectral waveform of the SC light. The shaping of the spectral waveform changes the maximum power of the seed light by changing the optical coupling efficiency of the seed light source and optical fiber, for example, thereby suitably deforms the spectrum of the SC light.