公开(公告)号：US07948670B2

公开(公告)日：2011-05-24

申请号：US12382908

申请日：2009-03-26

申请人： Tamotsu Akashi ,  Tsuyoshi Yamamoto

发明人： Tamotsu Akashi ,  Tsuyoshi Yamamoto

IPC分类号： G02B26/00 ,  G02B6/00

CPC分类号： G02B6/266

摘要： An optical attenuator includes a first reflection portion reflecting a light incoming from an optical input portion in a direction different from incoming axis, a second reflection portion reflecting the light from the first reflection portion, an optical output portion outputting the light that is reflected by the first reflection portion after being reflected by the second reflection portion, and an optical-intensity-attenuation filter that is arranged on an optical path between the first reflection portion and the second reflection portion, optical transmittance being shifted in stages according to a position thereof. The first reflection portion is capable of turning to shift an incoming position at the optical-intensity-attenuation filter.

摘要翻译： 一种光衰减器包括：反射来自光输入部分的入射轴不同于入射轴的光的第一反射部分，反射来自第一反射部分的光的第二反射部分，输出由第一反射部分反射的光的光输出部分; 由第二反射部分反射的第一反射部分和布置在第一反射部分和第二反射部分之间的光路上的光强度衰减滤光器，光透射率根据其位置逐级移位。 第一反射部分能够转动以在光强度衰减滤波器处移动入射位置。

公开(公告)号：US07636503B2

公开(公告)日：2009-12-22

申请号：US12073896

申请日：2008-03-11

申请人： Tsuyoshi Yamamoto ,  Tamotsu Akashi ,  Kohei Shibata ,  Hirofumi Aota ,  Shinji Yamashita

发明人： Tsuyoshi Yamamoto ,  Tamotsu Akashi ,  Kohei Shibata ,  Hirofumi Aota ,  Shinji Yamashita

IPC分类号： G02B6/26 ,  G02B6/42 ,  G02B26/08 ,  G02B26/10 ,  G02B26/12 ,  G02F1/29 ,  H04J14/00

CPC分类号： G02B26/0833 ,  G02B6/29311 ,  G02B6/29313 ,  G02B6/32 ,  G02B6/3512 ,  G02B6/3558 ,  G02B6/356

摘要： A wavelength selective switch of the present invention angularly disperses lights output from a plurality of input ports of an input and output optical system, to an X-direction, according to wavelength, by a diffraction grating to supply the dispersed lights to a condenser lens. The condenser lens is arranged so that a center axis thereof is shifted to the X-direction relative to an axis passing through the center of spreading angle to the X-direction of output beams from the diffraction grating, and accordingly, at a non-operating time, the light of each wavelength passed through the condenser lens is incident on each movable mirror being tilted by an offset angle corresponding to a shift amount of the condenser lens. As a result, it becomes possible to block the connection between an input side and an output side at the non-operating time without degrading the performance at an operating time.

公开(公告)号：US07340128B2

公开(公告)日：2008-03-04

申请号：US11412914

申请日：2006-04-28

申请人： Kohei Shibata ,  Nobuhiro Fukushima ,  Tamotsu Akashi ,  Toshiya Kishida ,  Tsuyoshi Yamamoto ,  Hirofumi Aota ,  Shinji Yamashita ,  Shinichi Takeuchi ,  Hiroyuki Furukawa ,  Yoshinobu Kubota

发明人： Kohei Shibata ,  Nobuhiro Fukushima ,  Tamotsu Akashi ,  Toshiya Kishida ,  Tsuyoshi Yamamoto ,  Hirofumi Aota ,  Shinji Yamashita ,  Shinichi Takeuchi ,  Hiroyuki Furukawa ,  Yoshinobu Kubota

IPC分类号： G02B6/293

CPC分类号： G02B6/2706 ,  G01J3/02 ,  G01J3/0202 ,  G01J3/0208 ,  G01J3/021 ,  G01J3/0237 ,  G01J3/0256 ,  G01J3/0286 ,  G01J3/0291 ,  G02B6/2766 ,  G02B6/29311 ,  G02B6/29313 ,  G02B6/2938 ,  G02B6/3512 ,  G02B6/3548 ,  G02B6/356 ,  G02B6/3582 ,  G02B6/4215

摘要： A housing 20 is equipped for supporting, from a side, a platform of a wavelength selection device comprising an input/output port 10, a collimator 11, an expanding optical system 12, a spectroscopic element, a collecting optical system 14 and a micro electro mechanical system (MEMS) mirror array 15. Because the above noted optical member is supported from the side only, influences of a thermal expansion is limited to the height direction of the optical member and the optical axis direction. By these aspects, the influence of thermal expansion is limited to a two-dimensional from a common three-dimensional, thereby enabling a design of a countermeasure to an influence of a thermal expansion. Also, the support from the side does not create a dead space thereby making the wavelength selection device compact.

摘要翻译： 壳体20被配备用于从一侧支撑包括输入/​​输出端口10，准直器11，扩展光学系统12，分光元件，收集光学系统14和微电子的波长选择装置的平台 机械系统（MEMS）镜阵列15.由于上述光学构件仅从侧面被支撑，所以热膨胀的影响限于光学构件的高度方向和光轴方向。 通过这些方面，热膨胀的影响从普通的三维被限制为二维，从而能够设计对热膨胀的影响的对策。 此外，来自侧面的支撑件不会产生死空间，从而使波长选择装置紧凑。

公开(公告)号：US07263254B2

公开(公告)日：2007-08-28

申请号：US11148190

申请日：2005-06-09

申请人： Shinji Yamashita ,  Tsuyoshi Yamamoto ,  Tamotsu Akashi ,  Kohei Shibata ,  Hirofumi Aota

发明人： Shinji Yamashita ,  Tsuyoshi Yamamoto ,  Tamotsu Akashi ,  Kohei Shibata ,  Hirofumi Aota

IPC分类号： G02B6/26

CPC分类号： G02B6/3586 ,  G02B6/2931 ,  G02B6/29313 ,  G02B6/3518 ,  G02B6/356 ,  G02B6/357 ,  G02B6/3588

摘要： The present invention provides an optical switch for restricting a reduction in an optical coupling efficiency to an output optical path, which comprises a first spectral unit, a second spectral unit for further spectrally diffracting a plurality of wavelength components spectrally diffracted in the first spectral unit, a plurality of movable mirrors capable of reflecting the plurality of wavelength components spectrally diffracted in the second spectral unit respectively and directing the same in different directions, and a controller for compensating for deviation angles relative to optical axes of the plurality of wavelength components spectrally diffracted in the second spectral unit through setting of angles of reflecting faces in the plurality of movable mirrors.

摘要翻译： 本发明提供了一种用于限制光耦合效率降低到输出光路的光开关，其包括第一光谱单元，用于进一步光谱衍射在第一光谱单元中频谱衍射的多个波长分量的第二光谱单元， 多个可移动反射镜，其能够分别反射在第二光谱单元中分光衍射的多个波长分量并将其引导到不同方向;以及控制器，用于补偿相对于在光谱上衍射的多个波长分量的光轴的偏离角度 所述第二光谱单元通过设置所述多个可移动反射镜中的反射面的角度。

公开(公告)号：US20100021167A1

公开(公告)日：2010-01-28

申请号：US12453172

申请日：2009-04-30

申请人： Hirofumi Aota ,  Tamotsu Akashi ,  Tsuyoshi Yamamoto

发明人： Hirofumi Aota ,  Tamotsu Akashi ,  Tsuyoshi Yamamoto

IPC分类号： H04J14/02

CPC分类号： G02B6/356 ,  G02B6/29311 ,  G02B6/29313 ,  G02B6/352 ,  G02B6/3558 ,  G02B6/3594 ,  G02F2203/48 ,  G02F2203/58 ,  G02F2203/585 ,  H04Q2213/1301

摘要： In a wavelength selecting switch, light output from an input port of an input/output optical system is angularly dispersed according to a wavelength thereof, with a spectral element. Then the lights of respective wavelengths are collected by a light collecting optical system and reflected with a corresponding reflecting mirror of a mirror section. The reflected light corresponding to the angle of the reflecting mirror, is input to an output port at an output destination of the input/output optical system. The respective output ports of the input/output optical system each have a lens coupled to an end face of an optical fiber, and the lens has a structure where a focal length of a first region corresponding to inside a variable range of attenuation is different from a focal length of a second region corresponding to outside the variable range. As a result, a change in intensity of output light (coupling efficiency) at the time of an angle change of the reflecting mirror, and cross talk to an adjacent port can be reduced simultaneously.

摘要翻译： 在波长选择开关中，从输入/输出光学系统的输入端口输出的光根据其波长与光谱元件成角度地分散。 然后各个波长的光被聚光光学系统收集并用相应的反射镜反射镜反射。 对应于反射镜的角度的反射光被输入到输入/输出光学系统的输出目的地的输出端口。 输入/输出光学系统的各自的输出端口各自具有耦合到光纤的端面的透镜，并且透镜具有其中对应于可变衰减范围内的第一区域的焦距不同于 对应于可变范围之外的第二区域的焦距。 结果，能够同时降低反射镜的角度变化时的输出光的强度变化（耦合效率）和与相邻端口的串扰。

公开(公告)号：US20090323167A1

公开(公告)日：2009-12-31

申请号：US12382908

申请日：2009-03-26

申请人： Tamotsu Akashi ,  Tsuyoshi Yamamoto

发明人： Tamotsu Akashi ,  Tsuyoshi Yamamoto

IPC分类号： G02B26/02

CPC分类号： G02B6/266

摘要： An optical attenuator includes a first reflection portion reflecting a light incoming from an optical input portion in a direction different from incoming axis, a second reflection portion reflecting the light from the first reflection portion, an optical output portion outputting the light that is reflected by the first reflection portion after being reflected by the second reflection portion, and an optical-intensity-attenuation filter that is arranged on an optical path between the first reflection portion and the second reflection portion, optical transmittance being shifted in stages according to a position thereof. The first reflection portion is capable of turning to shift an incoming position at the optical-intensity-attenuation filter.

摘要翻译： 一种光衰减器包括：反射来自光输入部分的入射轴不同于入射轴的光的第一反射部分，反射来自第一反射部分的光的第二反射部分，输出由第一反射部分反射的光的光输出部分; 由第二反射部分反射的第一反射部分和布置在第一反射部分和第二反射部分之间的光路上的光强度衰减滤光器，光透射率根据其位置逐级移位。 第一反射部分能够转动以在光强度衰减滤波器处移动入射位置。

公开(公告)号：US20080239441A1

公开(公告)日：2008-10-02

申请号：US12033959

申请日：2008-02-20

申请人： Hirofumi AOTA ,  Kohei Shibata ,  Tamotsu Akashi ,  Tsuyoshi Yamamoto

发明人： Hirofumi AOTA ,  Kohei Shibata ,  Tamotsu Akashi ,  Tsuyoshi Yamamoto

IPC分类号： G02B26/08

CPC分类号： G02B6/3512 ,  G02B1/02 ,  G02B6/29311 ,  G02B6/29313 ,  G02B6/356 ,  G02B26/0833

摘要： The present mirror device for suppressing PDL on the assumption of multiple modes of angles of input light and output light to movable mirrors with respect to the crystal axis of a crystal member at the time light passes through the crystal member. The mirror device includes a mirror system 2 and a flat-shaped crystal member 3 which is arranged in such a manner that a first angle is not larger than a second angle. The crystal member is constructed in such a manner that a third angle is substantially equal to a half of a fourth angle.

摘要翻译： 本反射镜装置用于在时间光通过晶体部件的情况下假定输入光的多个角度和输出光相对于晶体部件的晶轴相对于可动反射镜的抑制PDL。 镜装置包括镜子系统2和平面状的晶体构件3，其以第一角度不大于第二角度的方式布置。 晶体构件的构造使得第三角度基本上等于第四角度的一半。

公开(公告)号：US20070077003A1

公开(公告)日：2007-04-05

申请号：US11320973

申请日：2005-12-30

申请人： Hirofumi Aota ,  Kohei Shibata ,  Tamotsu Akashi ,  Shinji Yamashita ,  Tsuyoshi Yamamoto ,  Shinichi Takeuchi ,  Yoshinobu Kubota ,  Nobuhiro Fukushima ,  Hiroyuki Furukawa ,  Toshiya Kishida

发明人： Hirofumi Aota ,  Kohei Shibata ,  Tamotsu Akashi ,  Shinji Yamashita ,  Tsuyoshi Yamamoto ,  Shinichi Takeuchi ,  Yoshinobu Kubota ,  Nobuhiro Fukushima ,  Hiroyuki Furukawa ,  Toshiya Kishida

IPC分类号： G02B6/35

CPC分类号： G02B6/29395 ,  G02B6/2931 ,  G02B6/29313 ,  G02B6/3512 ,  G02B6/4215

摘要： A wavelength selective optical switch of the present invention separates a WDM light emitted from an input port of an input and output optical system, according to wavelengths, by a diffraction grating, and thereafter, condenses the lights of respective wavelengths on MEMS mirrors respectively corresponding to the respective wavelengths, in a mirror array, to reflect them by a condenser optical system, to thereby switch optical paths for the respective lights. The condenser optical system is configured by combining a plurality of lenses whose focal distances are different from each other, and positions in an optical axis direction of the lenses are adjustable by a slide mechanism. Thus, despite an error in the focal distances of the condenser lenses, in a mounting angle of a spectral element or the like, a beam pitch at the condensing positions of the lights of respective wavelengths can be coincident with a mirror pitch in the mirror array.

摘要翻译： 本发明的波长选择性光开关根据波长通过衍射光栅分离从输入和输出光学系统的输入端口发射的WDM光，然后将分别对应于 反射镜阵列中的各个波长通过聚光器光学系统反射，从而切换各个光的光路。 聚光器系统通过组合焦距彼此不同的多个透镜来构成，透镜的光轴方向的位置通过滑动机构来调节。 因此，尽管聚光透镜的焦距存在误差，但是在光谱元件等的安装角度，各波长的光的聚光位置处的光束间距可以与镜阵列中的镜间距一致 。

公开(公告)号：US06771426B2

公开(公告)日：2004-08-03

申请号：US10342301

申请日：2003-01-15

申请人： Tsuyoshi Yamamoto ,  Tamotsu Akashi ,  Shinichi Takeuchi

发明人： Tsuyoshi Yamamoto ,  Tamotsu Akashi ,  Shinichi Takeuchi

IPC分类号： G02B2730

CPC分类号： G02B6/3524 ,  G02B6/3512 ,  G02B6/3526 ,  G02B6/3556 ,  G02B6/3582

摘要： In an input-output optical system of spatially optical coupled type, a spacer is provided in at least one of input and output optical systems and interposed between a lens array block and a fiber block without blocking an optical path for ensuring a distance corresponding to a focal distance of collimating lenses. As a result, highly-accurate, highly-stable alignment of an optical axis can be readily realized.

摘要翻译： 在空间光耦合型的输入输出光学系统中，在输入和输出光学系统中的至少一个光学系统中设置间隔物，并且插入在透镜阵列块和光纤块之间，而不阻挡用于确保对应于 准直透镜的焦距。 结果，可以容易地实现光轴的高精度，高度稳定的对准。

公开(公告)号：US5619601A

公开(公告)日：1997-04-08

申请号：US328061

申请日：1994-10-24

申请人： Tamotsu Akashi ,  Tsuyoshi Yamamoto ,  Takakiyo Nakagami

发明人： Tamotsu Akashi ,  Tsuyoshi Yamamoto ,  Takakiyo Nakagami

IPC分类号： G02F1/13 ,  G02B6/35 ,  G02B27/28 ,  G02F1/31 ,  H04B10/00 ,  H04B10/27 ,  H04B10/29 ,  H04Q11/00 ,  G02B6/27

CPC分类号： H04Q11/0003 ,  G02B27/28 ,  G02F1/31 ,  G02B6/3512

摘要： A reflecting-type optical switch is constructed by stacking a parallel plate-shaped glass substrate and a parallel plate-shaped polarization controller, providing a reflecting portion in such a manner that incident light propagates in zigzag fashion owing to reflection, and depositing a polarizing separating film on the glass substrate where two prescribed incident light beams intersect owing to reflection. Further, a transmission-type optical switch is constructed by providing a polarization controller in front of a polarizing prism, and depositing a polarizing separating film on the glass substrate of the polarizing prism where two prescribed incident light beams intersect owing to reflection. Furthermore, an optical distributor is constructed by stacking a plurality of parallel plate-shaped glass substrates and depositing a partial reflecting film on the glass substrate where two prescribed incident light beams intersect owing to reflection.

摘要翻译： 反射型光开关通过层叠平行板状玻璃基板和平行板状偏振光控制器而构成，提供反射部分，使得入射光由于反射而以锯齿形传播，并且沉积极化分离 在玻璃基板上的两个规定的入射光束由于反射而相交的胶片。 此外，通过在偏振棱镜前面设置偏振控制器，并在偏光棱镜的玻璃基板上沉积两个规定的入射光束由于反射而相交而构成透射型光开关。 此外，通过层叠多个平行的板状玻璃基板并在玻璃基板上沉积两个规定的入射光束由于反射而相交的部分反射膜而构成光分配器。