公开(公告)号：US5796887A

公开(公告)日：1998-08-18

申请号：US825444

申请日：1997-03-20

申请人： Norihisa Naganuma ,  Hideki Noda

发明人： Norihisa Naganuma ,  Hideki Noda

IPC分类号： G02B6/293 ,  G02B6/34 ,  G02B6/26

CPC分类号： G02B6/2938 ,  G02B6/2937

摘要： An optical device including a lens and an optical thin film for coupling and separating two light components. First and second optical fibers are arranged on one side of the lens at symmetrical positions with respect to the optical axis of the lens, and the optical thin film and a third optical fiber are arranged on the other side of the lens. An isosceles triangular block is arranged to simultaneously move the first and second optical fibers to adjust an incident angle and an emerging angle of the light made incident to the optical thin film. Alternatively, a movable isosceles triangular prism having two oblique reflecting surfaces is arranged.

摘要翻译： 一种包括透镜和用于耦合和分离两个光分量的光学薄膜的光学装置。 第一和第二光纤相对于透镜的光轴在对称位置处布置在透镜的一侧上，并且光学薄膜和第三光纤布置在透镜的另一侧上。 等腰三角形块被布置成同时移动第一和第二光纤以调节入射到光学薄膜的入射角和出射角。 或者，设置具有两个倾斜反射面的可动等腰三角棱镜。

公开(公告)号：US20050249452A1

公开(公告)日：2005-11-10

申请号：US11180526

申请日：2005-07-14

申请人： Shinji Maruyama ,  Norihisa Naganuma

发明人： Shinji Maruyama ,  Norihisa Naganuma

IPC分类号： G02B6/34 ,  G02B6/12

CPC分类号： G02B6/12019 ,  G02B6/29328

摘要： In an optical switch device: output waveguides are arranged with such a pitch as to realize a split wavelength gap equal to or smaller than half of a gap between operating wavelengths of optical signals; at least two input waveguides are arranged with the same pitch; at least one slab waveguide spreads light from the input waveguides to be outputted to a grating element, condenses first light from the grating element to be outputted into the input waveguides, condenses second light from the grating element for each wavelength to be outputted into the output waveguides, and spreads light from the output waveguides to be outputted to the grating element; and the optical switch unit selects signals at an identical wavelength in adjacent output waveguides, and performs 2×2 switching of the signals so as to output the signals from the input waveguides.

摘要翻译： 在光开关装置中：输出波导以这样的间距排列，以实现等于或小于光信号工作波长之间的间隙的一半的分离波长间隙; 至少两个输入波导以相同的间距排列; 至少一个平板波导将来自输入波导的光展开以输出到光栅元件，将来自光栅元件的第一光凝结输出到输入波导中，将来自光栅元件的第二光从每个波长聚光以输出到输出 波导，并且从输出波导扩散光以输出到光栅元件; 并且光学开关单元选择相邻输出波导中相同波长的信号，并且执行信号的2×2切换，以输出来自输入波导的信号。

公开(公告)号：US06650797B2

公开(公告)日：2003-11-18

申请号：US10068941

申请日：2002-02-11

申请人： Norihisa Naganuma

发明人： Norihisa Naganuma

IPC分类号： G02B600

CPC分类号： G02B6/29395 ,  G02B6/2713 ,  G02B6/272 ,  G02B6/2766 ,  G02B6/2773 ,  G02B6/29302 ,  G02B6/2934 ,  G02B6/29361 ,  G02B6/4246 ,  H04B10/2941

摘要： A wavelength characteristic control device capable of variably controlling a wavelength characteristic in a satisfactory manner. A polarized light wavelength characteristic changing element has a wavelength characteristic such that the transmittances or reflectances of P- and S-polarized rays vary differently with respect to wavelength. Polarization variable control means subjects the plane of polarization of the polarized light incident on the polarized light wavelength characteristic changing element to rotatory control to change the ratio of the P-polarized ray to the S-polarized ray, thereby variably controlling the wavelength characteristic.

摘要翻译： 一种能够以令人满意的方式可变地控制波长特性的波长特性控制装置。 偏振光波长特性变化元件具有使得P和S偏振光的透射率或反射率相对于波长不同变化的波长特性。 极化可变控制装置使入射到偏振光波长特性变化元件上的偏振光的偏振面受到旋转控制，以改变P偏振光线与S偏振光线的比例，从而可变地控制波长特性。

公开(公告)号：US06496619B2

公开(公告)日：2002-12-17

申请号：US09356049

申请日：1999-07-16

申请人： Norihisa Naganuma

发明人： Norihisa Naganuma

IPC分类号： G02B626

CPC分类号： G02B6/4215 ,  G02B6/29391 ,  H04B10/2941

摘要： A method for gain equalization. In this method, an optical transmission line including an optical amplifier for giving a gain to WDM (wavelength division multiplexed) signal light is first provided. Gain equalization is next performed on the optical transmission line so as to obtain a gain changing substantially monotonously with respect to wavelength. Gain equalization is further performed on the optical transmission line so as to obtain a gain substantially fixed with respect to wavelength. A wavelength characteristic of gain changing monotonously can be easily gain-equalized by an active gain equalizer having a simple configuration. Accordingly, even when the optical amplifier has a nonmonotonous wavelength characteristic of gain, a gain tilt in the optical amplifier can be easily flattened.

摘要翻译： 一种增益均衡的方法。 在该方法中，首先提供包括用于对WDM（波分复用）​​信号光进行增益的光放大器的光传输线。 接着在光传输线上执行增益均衡，以获得相对于波长基本单调变化的增益。 在光传输线上进一步进行增益均衡，以获得相对于波长基本固定的增益。 可以通过具有简单配置的有源增益均衡器容易地增益增益增益单调变化的波长特性。 因此，即使当光放大器具有增益的非单调波长特性时，光放大器中的增益倾斜也容易变平。

公开(公告)号：US5125053A

公开(公告)日：1992-06-23

申请号：US662736

申请日：1991-03-01

申请人： Kenichi Abe ,  Norihisa Naganuma ,  Hisashi Takamatsu

发明人： Kenichi Abe ,  Norihisa Naganuma ,  Hisashi Takamatsu

IPC分类号： G02B6/28 ,  G02B6/34 ,  G02B6/42 ,  H01S3/094

CPC分类号： H01S3/094003 ,  G02B6/2817 ,  G02B6/4209 ,  H01S3/094019 ,  H01S3/09408

摘要： An optical coupler is disclosed which couples a signal beam and a pumping beam having proximate wavelengths to each other. The optical coupler includes a first prism having an included angle of 45 degrees, and a triangular prism having an apex angle of 22.5 degrees and adhered to a face of the first prism on which an optical wavelength multiplexing film is formed. The signal beam and the pumping beam multiplexed by the optical coupled is introduced into an Er doped fiber, in which the signal beam is amplified directly.

公开(公告)号：US06829396B2

公开(公告)日：2004-12-07

申请号：US10612959

申请日：2003-07-07

申请人： Norihisa Naganuma

发明人： Norihisa Naganuma

IPC分类号： G02B600

CPC分类号： G02B6/29395 ,  G02B6/2713 ,  G02B6/272 ,  G02B6/2766 ,  G02B6/2773 ,  G02B6/29302 ,  G02B6/2934 ,  G02B6/29361 ,  G02B6/4246 ,  H04B10/2941

摘要： A wavelength characteristic control device capable of variably controlling a wavelength characteristic in a satisfactory manner. A polarized light wavelength characteristic changing element has a wavelength characteristic such that the transmittances or reflectances of P- and S-polarized rays vary differently with respect to wavelength. Polarization variable control means subjects the plane of polarization of the polarized light incident on the polarized light wavelength characteristic changing element to rotatory control to change the ratio of the P-polarized ray to the S-polarized ray, thereby variably controlling the wavelength characteristic.

摘要翻译： 一种能够以令人满意的方式可变地控制波长特性的波长特性控制装置。 偏振光波长特性变化元件具有使得P和S偏振光的透射率或反射率相对于波长不同变化的波长特性。 极化可变控制装置使入射到偏振光波长特性变化元件上的偏振光的偏振面受到旋转控制，以改变P偏振光线与S偏振光线的比例，从而可变地控制波长特性。

公开(公告)号：US06370285B1

公开(公告)日：2002-04-09

申请号：US09187748

申请日：1998-11-09

申请人： Norihisa Naganuma

发明人： Norihisa Naganuma

IPC分类号： G02B600

CPC分类号： G02B6/29395 ,  G02B6/2713 ,  G02B6/272 ,  G02B6/2766 ,  G02B6/2773 ,  G02B6/29302 ,  G02B6/2934 ,  G02B6/29361 ,  G02B6/4246 ,  H04B10/2941

摘要： A wavelength characteristic control device capable of variably controlling a wavelength characteristic in a satisfactory manner. A polarized light wavelength characteristic changing element has a wavelength characteristic such that the transmittances or reflectances of P- and S-polarized rays vary differently with respect to wavelength. Polarization variable control means subjects the plane of polarization of the polarized light incident on the polarized light wavelength characteristic changing element to rotatory control to change the ratio of the P-polarized ray to the S-polarized ray, thereby variably controlling the wavelength characteristic.

公开(公告)号：US5812307A

公开(公告)日：1998-09-22

申请号：US851705

申请日：1997-05-06

申请人： Norihisa Naganuma

发明人： Norihisa Naganuma

IPC分类号： G02B6/26 ,  G02B6/293 ,  G02B6/34 ,  G02B6/42 ,  H01S3/06 ,  H01S3/067 ,  H01S3/10 ,  H04B10/00 ,  H04B10/25 ,  G02B27/14

CPC分类号： G02B6/29362 ,  G02B6/4246

摘要： An optical device consists of integrated parts and is used for an optical amplifier. The optical device has first to third assemblies. The first assembly includes two optical fibers each for transmitting a beam and a lens for receiving the beams and providing collimated beams oriented in different directions at given angles. The second assembly includes an optical fiber and a lens to receive one of the collimated beams. The third assembly includes an optical fiber and a lens to receive the other collimated beam. At least one of the second and third assemblies has a second optical fiber. An optical film is arranged in front of the lens of the assembly having the second optical fiber. The optical film reflects an optical signal whose wavelength is different from that of the collimated beam. The two optical fibers of the assembly having the second optical fiber are coupled together through the lens and optical film, to pass the optical signal between the two optical fibers.

摘要翻译： 光学装置由集成部件组成，用于光放大器。 光学装置具有第一至第三组件。 第一组件包括两个光纤，每个用于传输光束和用于接收光束的透镜，并且以给定角度提供以不同方向定向的准直光束。 第二组件包括光纤和用于接收准直束之一的透镜。 第三组件包括光纤和用于接收另一准直光束的透镜。 第二和第三组件中的至少一个具有第二光纤。 光学膜布置在具有第二光纤的组件的透镜的前面。 光学膜反射出波长不同于准直光束的光信号。 具有第二光纤的组件的两根光纤通过透镜和光学膜耦合在一起，以将光信号传递到两根光纤之间。

公开(公告)号：US5801892A

公开(公告)日：1998-09-01

申请号：US674515

申请日：1996-07-02

申请人： Norihisa Naganuma ,  Nobuhiro Fukushima

发明人： Norihisa Naganuma ,  Nobuhiro Fukushima

IPC分类号： G02B6/26 ,  G02B5/28 ,  G02B6/32 ,  G02B6/34 ,  G02B6/38 ,  G02B6/42 ,  G02B7/00 ,  G02B26/08 ,  G02B5/22

CPC分类号： G02B6/29362 ,  G02B6/2937 ,  G02B6/29395 ,  G02B6/4246 ,  G02B7/004 ,  G02B6/3845

摘要： An optical device having a collimating mechanism for converting light emitted from an excitation port into a parallel beam and outputting the parallel beam onto an optical path, an optical film provided so as to pass the parallel beam output from the collimating mechanism, and a supporting mechanism for supporting the optical film so that the optical film is rotatable about an axis inclined with respect to the optical path. The optical film is inclined with respect to a plane perpendicular to the axis. An incident angle of the parallel beam upon the optical film can be changed by rotating the optical film about the axis. Thus, the optical device having the optical film that can vary the incident angle thereupon can be provided with a simple structure.

摘要翻译： 一种具有准直机构的光学装置，用于将从激励端射出的光转换为平行光，并将平行光束输出到光路上;光学膜，其设置成使从准直机构输出的平行光束通过， 用于支撑光学膜，使得光学膜可以围绕相对于光路倾斜的轴线旋转。 光学膜相对于垂直于轴的平面倾斜。 可以通过围绕轴线旋转光学膜来改变平行光束在光学膜上的入射角度。 因此，可以提供具有能够改变入射角的光学膜的光学装置，其结构简单。

公开(公告)号：US06515776B1

公开(公告)日：2003-02-04

申请号：US09314944

申请日：1999-05-20

申请人： Norihisa Naganuma

发明人： Norihisa Naganuma

IPC分类号： H04J1402

CPC分类号： G02B6/29367 ,  G02B6/2938 ,  H04J14/02

摘要： Disclosed herein is an optical device including a fiber collimator and a plurality of fiber assemblies sequentially optically coupled to the fiber collimator by a reflected light path of a substantially parallel beam. The fiber collimator includes an optical fiber and a lens opposed to the optical fiber. Each fiber assembly includes an optical filter for providing the reflected light path, an optical fiber optically coupled to the optical filter by its transmitted light path, and a lens provided between the optical filter and this optical fiber. The lens of the i-th fiber assembly has a focal length equal to or greater than that of the lens of the (i−1)-th fiber assembly. With this configuration, a deviation in coupling loss or insertion loss due to beam divergence in the reflected light path can be reduced.

摘要翻译： 本文公开了一种光学装置，其包括光纤准直器和通过基本上平行的光束的反射光路顺序地光耦合到光纤准直器的多个光纤组件。 光纤准直器包括光纤和与光纤相对的透镜。 每个光纤组件包括用于提供反射光路的光学滤光器，通过其透射光路光耦合到滤光器的光纤，以及设置在滤光器和该光纤之间的透镜。 第i个光纤组件的透镜具有等于或大于第（i-1）个光纤组件的透镜的焦距。 利用这种配置，可以减少由于反射光路中的光束发散引起的耦合损耗或插入损耗的偏差。