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31. 发明授权

US07321707B2 Electromagnetic wave frequency filter 失效
公开(公告)号：US07321707B2
公开(公告)日：2008-01-22
申请号：US10569922
申请日：2004-08-26
申请人： Susumu Noda , Takashi Asano , Bong-Shik Song , Hitomichi Takano
发明人： Susumu Noda , Takashi Asano , Bong-Shik Song , Hitomichi Takano
IPC分类号： G02B6/26
CPC分类号： G02B6/12007 , B82Y20/00 , G02B6/1225 , G02B2006/12164 , H01P1/2005
摘要： In this electromagnetic wave frequency filter, an electromagnetic wave of a predetermined frequency matching a resonant frequency of a resonator 41 is transmitted from an input waveguide 2 to an output waveguide 3 through the resonator 41, and is outputted from a drop port P31. This filter has an input-waveguide-side reflector 211 and an output-waveguide-side reflector 311, which reflect the electromagnetic wave of the predetermined frequency. The electromagnetic wave frequency filter satisfies the following relation: Qinb/(1−cos θ1)

32. 发明申请

US20080013902A1 Two-Dimensional Photonic Crystal and Optical Device Using the Crystal 有权
标题翻译：二维光子晶体和使用晶体的光学器件
公开(公告)号：US20080013902A1
公开(公告)日：2008-01-17
申请号：US11661232
申请日：2005-08-30
申请人： Susumu Noda , Takashi Asano , Hitoshi Kitagawa , Seiichi Takayama
发明人： Susumu Noda , Takashi Asano , Hitoshi Kitagawa , Seiichi Takayama
IPC分类号： G02B6/02 , G02B6/10
CPC分类号： G02B6/1225 , B82Y20/00
摘要： The present invention intends to provide a two-dimensional photonic crystal having a wide photonic band gap (PBG). In a slab-shaped body 31, a number of holes 32, whose sectional shape on a plane parallel to the slab surface is an equilateral triangle, are periodically arranged in a triangular lattice pattern. The upper and lower sides of the holes 32 are covered with the material of the body 31. The aforementioned sectional shape is uneven along the direction perpendicular to the slab surface. This construction expands the PBG for TM-polarized light and thereby increases its energy region overlapping with the PBG for TE-polarized light. This overlapping section is the complete PBG. If a ray of light whose wavelength corresponds to an energy level within the complete PBG, neither the TE-polarized nor TM-polarized component of the light can be propagated through the photonic crystal. Therefore, even if a waveguide and/or a resonator is provided in the photonic crystal, the light having the aforementioned wavelength will never leak from the waveguide or resonator into the photonic crystal.
摘要翻译：本发明旨在提供具有宽光子带隙（PBG）的二维光子晶体。在板状主体31中，在与平板面平行的平面上的截面形状为等边三角形的多个孔32周期性地排列成三角形格子状。孔32的上侧和下侧被主体31的材料覆盖。上述截面形状沿与板坯表面垂直的方向不均匀。这种结构扩展了TM偏振光的PBG，从而增加了其与TE偏振光的PBG重叠的能量区域。这个重叠部分是完整的PBG。如果其波长对应于完整PBG内的能级的光线，则光的TE偏振和TM偏振分量都不能通过光子晶体传播。因此，即使在光子晶体中设置波导和/或谐振器，具有上述波长的光也不会从波导或谐振器泄漏到光子晶体中。

33. 发明授权

US07184638B2 Electromagnetic wave frequency filter 有权
标题翻译：电磁波频率滤波器
公开(公告)号：US07184638B2
公开(公告)日：2007-02-27
申请号：US10540776
申请日：2003-12-24
申请人： Susumu Noda , Takashi Asano , Hitomichi Takano
发明人： Susumu Noda , Takashi Asano , Hitomichi Takano
IPC分类号： G02F1/295 , G02B6/42 , G02B6/10
CPC分类号： B82Y20/00 , G02B6/12007 , G02B6/1225
摘要： The present invention aims to provide an electromagnetic wave frequency filter capable of transmitting an electromagnetic wave having a predetermined frequency between two waveguides with a high level of efficiency. This object is achieved by the following construction: A resonator 15 that resonates with the electromagnetic wave having the predetermined frequency is located between an input waveguide 13 and an output waveguide 14 and close to the two waveguides. The output waveguide 14 is designed so that it extends parallel to the input waveguide 13 within a predetermined section 18 located in proximity to the resonator 15, and its distance from the input waveguide 13 in the other section is larger than that in the predetermined section 18. This construction allows the electromagnetic wave having the predetermined frequency to be transmitted between the input waveguide 13 and the output waveguide 14 via the resonator 15, while preventing the other electromagnetic waves having different frequencies from being transmitted between the input waveguide 13 and the output waveguide 14 outside of the predetermined section 18. The present electromagnetic wave frequency filter can be preferably constructed using a two-dimensional photonic crystal.
摘要翻译：本发明旨在提供一种电磁波频率滤波器，其能够以高效率的方式在两个波导之间传输具有预定频率的电磁波。该目的通过以下结构实现：与具有预定频率的电磁波谐振的谐振器15位于输入波导13和输出波导14之间并且靠近两个波导。输出波导14被设计成使得其在位于谐振器15附近的预定部分18内平行于输入波导13延伸，并且其与另一部分中的输入波导13的距离大于预定部分18中的距离。这种结构允许具有预定频率的电磁波经由谐振器15在输入波导13和输出波导14之间传输，同时防止具有不同频率的其它电磁波在输入波导13和输出波导14之间传输在预定部分18之外。本电磁波频率滤波器可以优选使用二维光子晶体构造。

34. 发明申请

US20060204161A1 Two-dimensional photonic crystal multiplexer/demultiplexer 有权
标题翻译：二维光子晶体复用器/解复用器
公开(公告)号：US20060204161A1
公开(公告)日：2006-09-14
申请号：US10566843
申请日：2004-08-24
申请人： Susumu Noda , Takashi Asano , Yoshihiro Akahane
发明人： Susumu Noda , Takashi Asano , Yoshihiro Akahane
IPC分类号： G02F1/01
CPC分类号： G02B6/12007 , B82Y20/00 , G02B6/1225
摘要： An object of the present invention is to provide a multiplexer/demultiplexer capable of preventing a decrease in multiplexing/demultiplexing efficiency due to an error in wavelength or due to a crosstalk with other wavelengths. A two-dimensional photonic crystal having holes 22 cyclically arranged is provided with an input waveguide 23 and an output waveguide 24. Located between the two waveguides are two point-like defects 25 and 26, each consisting of a region devoid of the holes 22. From the light including various wavelengths and propagating through the input waveguide 23, the two point-like defects extract a ray of light having a wavelength determined by the shape of the point-like defects and introduce it into the output waveguide 24. Compared with the case where there is only one point-like defect, the above-described construction increases the values of the wavelength spectrum of the extracted light at around the resonance wavelength and decreases the values at the wavelength range far from the resonance wavelength. Therefore, the increase in the values of the wavelength spectrum at around the resonance wavelength ensures that the light having the desired wavelength can be extracted from the waveguide by a large amount even if the wavelength of the light propagating through the waveguide is erroneously shifted from the resonance frequency. Occurrence of noises within a wavelength range far from the resonance wavelength and extraction of light having the wavelengths of adjacent channels are also suppressed.
摘要翻译：本发明的目的是提供一种能够防止由于波长错误或由于与其它波长的串扰而导致的复用/解复用效率降低的多路复用器/解复用器。具有循环布置的孔22的二维光子晶体设置有输入波导23和输出波导24.位于两个波导之间的是两个点状缺陷25和26，每个都由没有孔22的区域组成。从包括各种波长的光和通过输入波导23传播的光，两个点状缺陷提取具有由点状缺陷的形状确定的波长的光线并将其引入输出波导24中。与只有一个点状缺陷的情况，上述结构增加了谐振波长附近的提取光的波长谱的值，并且减小了远离谐振波长的波长范围内的值。因此，即使通过波导传播的光的波长被错误地偏离，波长附近的谐振波长的值的增加也确保了能够从波导中提取具有期望波长的光，谐振频率。在远离谐振波长的波长范围内的噪声的发生和具有相邻波道的波长的光的提取也被抑制。

35. 发明申请

US20060098918A1 Electromagnetic frequency filter 有权
标题翻译：电磁频率滤波器
公开(公告)号：US20060098918A1
公开(公告)日：2006-05-11
申请号：US10540776
申请日：2003-12-24
申请人： Susumu Noda , Takashi Asano , Hitomichi Takano
发明人： Susumu Noda , Takashi Asano , Hitomichi Takano
IPC分类号： G02B6/26
CPC分类号： B82Y20/00 , G02B6/12007 , G02B6/1225
摘要： The present invention aims to provide an electromagnetic wave frequency filter capable of transmitting an electromagnetic wave having a predetermined frequency between two waveguides with a high level of efficiency. This object is achieved by the following construction: A resonator 15 that resonates with the electromagnetic wave having the predetermined frequency is located between an input waveguide 13 and an output waveguide 14 and close to the two waveguides. The output waveguide 14 is designed so that it extends parallel to the input waveguide 13 within a predetermined section 18 located in proximity to the resonator 15, and its distance from the input waveguide 13 in the other section is larger than that in the predetermined section 18. This construction allows the electromagnetic wave having the predetermined frequency to be transmitted between the input waveguide 13 and the output waveguide 14 via the resonator 15, while preventing the other electromagnetic waves having different frequencies from being transmitted between the input waveguide 13 and the output waveguide 14 outside of the predetermined section 18. The present electromagnetic wave frequency filter can be preferably constructed using a two-dimensional photonic crystal.
摘要翻译：本发明旨在提供一种电磁波频率滤波器，其能够以高效率的方式在两个波导之间传输具有预定频率的电磁波。该目的通过以下结构实现：与具有预定频率的电磁波谐振的谐振器15位于输入波导13和输出波导14之间并且靠近两个波导。输出波导14被设计成使得其在位于谐振器15附近的预定部分18内平行于输入波导13延伸，并且其与另一部分中的输入波导13的距离大于预定部分18中的距离。这种结构允许具有预定频率的电磁波经由谐振器15在输入波导13和输出波导14之间传输，同时防止具有不同频率的其它电磁波在输入波导13和输出波导14之间传输在预定部分18之外。本电磁波频率滤波器可以优选使用二维光子晶体构造。

36. 发明申请

US20060051014A1 Two-dimensional photonic crystal optical multiplexer demultiplexer utilizing boundary reflection 有权
标题翻译：利用边界反射的二维光子晶体光复用器解复用器
公开(公告)号：US20060051014A1
公开(公告)日：2006-03-09
申请号：US10537513
申请日：2003-12-05
申请人： Susumu Noda , Takashi Asano
发明人： Susumu Noda , Takashi Asano
IPC分类号： G02B6/28
CPC分类号： G02B6/1225 , B82Y20/00 , G02B6/12007
摘要： The present invention has been made to provide an optical multiplexer/demultiplexer with a high multiplexing and demultiplexing efficiency. The object is achieved as follows. In an in-plane heterostructure photonic crystal in which vacancies 32 are periodically arranged in each of forbidden band zones 301, 302, . . . with different cycle distances, a waveguide 33 is formed passing through all the forbidden band zones by rendering corresponding vacancies 32 defective in a linear arrangement, and point-like defects 341, 342, . . . are formed by rendering three vacancies 32 in a linear arrangement defective in each of the forbidden band zones. Since, of all light propagating through the waveguide from the light introduction/take-out section 36 and having the frequency 52 demultiplexed from the predetermined point-like defect, the wavelength of light passing through the predetermined point-like defect is not included in transmission bands 51 of the waveguide in the adjacent forbidden band zone, so that the light is reflected on the boundaries 351 and 352 between forbidden band zones and introduced into the point-like defect. Thereby, the demultiplexing efficiency of light with the frequency taken-out from the point-like defect is improved. Light with the predetermined frequency multiplexed from the point-like defect increases the multiplexing efficiency due to increase in intensity of light reaching to the light introduction/takeout section 36 with the help of reflection thereof.
摘要翻译：本发明提供了一种具有高复用和解复用效率的光复用器/解复用器。该目的如下实现。在其中空位32周期地布置在每个禁带区301,302中的面内异质结构光子晶体中。。。具有不同的循环距离，通过使线性布置中的相应空缺32缺陷，以及点状缺陷341,342，形成穿过所有禁带区域的波导33。。。通过在每个禁带区域中呈现线性排列有缺陷的三个空位32形成。由于在从光导入/取出部36通过波导传播的所有光从预定的点状缺陷中解复用频率52，所以通过预定点状缺陷的光的波长不包括在传输中在相邻的禁带区域中波导的频带51，使得光在禁带区域之间的边界351和352上反射并被引入点状缺陷。因此，提高了从点状缺陷中取出的频率的光的解复用效率。借助于其反射，由于从点状缺陷复用的预定频率的光增加了由于到达光导入/取出部分36的光强度的增加而导致的复用效率。

37. 发明授权

US07957620B2 Two-dimensional photonic crystal resonator 有权
标题翻译：二维光子晶体谐振器
公开(公告)号：US07957620B2
公开(公告)日：2011-06-07
申请号：US10569729
申请日：2004-08-24
申请人： Susumu Noda , Takashi Asano , Bong-Shik Song , Yoshihiro Akahane
发明人： Susumu Noda , Takashi Asano , Bong-Shik Song , Yoshihiro Akahane
IPC分类号： G02B6/122 , G02B6/26
CPC分类号： B82Y20/00 , G02B6/1225
摘要： The present invention intends to provide a two-dimensional photonic crystal resonator having a high Q-value. The slab-shaped body 21 is provided with cyclically arranged holes 22. The body 21 is divided into three areas 31-33 with the holes 22 arranged with cycle distances of a1 in area 31 and a2 in areas 32 and 33, which is smaller than a1. A waveguide 23 passing through the three areas is formed by linearly eliminating the holes 22. The waveguide 23 thus formed can propagate rays of light within a wavelength band that depends on the cycle distance of the holes 22. The cycle distance of the holes in the area 31 differs from that of the areas 32 and 33, and the wavelength band of the light propagating through the waveguide accordingly differs. Therefore, a ray of light whose wavelength is within the waveguide transmission wavelength band of the area 31 but outside of the waveguide transmission wavelength band of the other areas 32 and 33 will be confined within the waveguide of the area 31 and resonate therein. Thus, the waveguide in the area 31 functions as a resonator.
摘要翻译：本发明旨在提供具有高Q值的二维光子晶体谐振器。板状体21设置有循环布置的孔22.主体21被分为三个区域31-33，其中孔22布置成具有区域31中的周期距离a1和区域32和33中的a2，小于 a1。穿过三个区域的波导23通过线性消除孔22形成。如此形成的波导23可以在取决于孔22的循环距离的波长带内传播光线。孔中的循环距离区域31与区域32和33的区别不同，并且通过波导传播的光的波段相应地不同。因此，其波长在区域31的波导传输波长带内但其他区域32和33的波导透射波段之外的光线将被限制在区域31的波导内并在其中谐振。因此，区域31中的波导用作谐振器。

38. 发明申请

US20090232441A1 Polarized Light Mode Converter 有权
标题翻译：极化光模式转换器
公开(公告)号：US20090232441A1
公开(公告)日：2009-09-17
申请号：US11886502
申请日：2006-03-07
申请人： Susumu Noda , Takashi Asano , Yoshinori Tanaka , Seiichi Takayama
发明人： Susumu Noda , Takashi Asano , Yoshinori Tanaka , Seiichi Takayama
IPC分类号： G02B6/00
CPC分类号： B82Y20/00 , G02B6/1225 , G02B6/126 , G02B6/14
摘要： The present invention provides a polarized light mode converter which can be provided within a two-dimensional photonic crystal or can be smoothly connected to a two-dimensional photonic crystal. In a two-dimensional photonic crystal made of a slab-like main body provided with a plurality of different refractive index regions (for example, holes 22) arranged in a lattice in the main body, where the different refractive index regions have a refractive index different from that of the main body, a polarized light conversion waveguide 23 is formed which is comprised of defects of the different refractive index regions arranged linearly whose a cross-sectional shape is asymmetrical in a vertical and in a horizontal direction. The polarized light conversion waveguide 23 can be, for example, realized by providing, on a side of the waveguide, holes 221 and 222 extending in a direction oblique to a the main body surface. TE polarized light propagating through the polarized light conversion waveguide 23 is partially converted into TM polarized light due to the asymmetry of the cross-sectional shape of the waveguide. Since the polarized light mode converter is made of a two-dimensional photonic crystal, it can be provided within a two-dimensional photonic crystal or can be smoothly connected to a two-dimensional photonic crystal.
摘要翻译：本发明提供一种可以设置在二维光子晶体内或者可以平滑地连接到二维光子晶体的偏振光模式转换器。在由板状主体构成的二维光子晶体中，其具有在主体中以格子排列的多个不同的折射率区域（例如，孔22），其中不同的折射率区域具有折射率与主体不同的是，形成偏振光转换波导23，该偏振光转换波导23由横截面形状在垂直方向和水平方向上不对称的直线布置的不同折射率区域的缺陷构成。例如，偏振光转换波导23可以通过在波导侧设置沿着与主体表面倾斜的方向延伸的孔221和222来实现。由于波导的横截面形状的不对称性，通过偏振光转换波导23传播的TE偏振光被部分地转换为TM偏振光。由于偏振光模式转换器由二维光子晶体制成，所以它可以设置在二维光子晶体内，或者可以平滑地连接到二维光子晶体。

39. 发明申请

US20080252890A1 Target Substance Sensor and Method Thereof Using a Photonic Crystal 有权
标题翻译：目标物质传感器及其使用光子晶体的方法
公开(公告)号：US20080252890A1
公开(公告)日：2008-10-16
申请号：US10593646
申请日：2005-03-23
申请人： Susumu Noda , Takashi Asano , Hitomichi Takano
发明人： Susumu Noda , Takashi Asano , Hitomichi Takano
IPC分类号： G01N21/00
CPC分类号： G02B6/1225 , B82Y20/00 , G01N21/3504 , G01N21/774 , G01N21/7746 , G01N2021/7776
摘要： A highly sensitive and compactible target substance sensor for detection of the target substance using a photonic crystal and a method thereof are provided.The sensor of the present invention includes an electromagnetic wave source of supplying an electromagnetic wave, a photonic sensor element, and a detector. The photonic sensor element has photonic crystalline structure and is configured to include a sensor waveguide for introducing the electromagnetic wave, and a sensing resonator electromagnetically coupled to the sensor waveguide for resonating the electromagnetic wave at specific wavelength. The sensing resonator is exposed to an atmosphere including the target substance so as to vary a characteristic of the electromagnetic wave emitted from the sensing resonator. The detector is configured to receive the electromagnetic wave emitted from the sensing resonator to recognize an intensity variation of the electromagnetic wave and issue a signal indicative of a characteristic of the target substance.
摘要翻译：提供了一种用于使用光子晶体检测目标物质的高灵敏度和可压缩的目标物质传感器及其方法。本发明的传感器包括提供电磁波的电磁波源，光子传感器元件和检测器。光子传感器元件具有光子晶体结构，并且被配置为包括用于引入电磁波的传感器波导和电磁耦合到传感器波导的感测谐振器，以谐振特定波长的电磁波。感测谐振器暴露于包括目标物质的气氛，以便改变从感测谐振器发射的电磁波的特性。检测器被配置为接收从感测谐振器发射的电磁波，以识别电磁波的强度变化并发出指示目标物质的特性的信号。

40. 发明授权

US07428352B2 Two-dimensional photonic crystal and optical function element using the same 有权
标题翻译：二维光子晶体和光学功能元件使用相同
公开(公告)号：US07428352B2
公开(公告)日：2008-09-23
申请号：US11794121
申请日：2005-12-28
申请人： Susumu Noda , Takashi Asano , Bong-Shik Song , Seiichi Takayama
发明人： Susumu Noda , Takashi Asano , Bong-Shik Song , Seiichi Takayama
IPC分类号： G02B6/26 , G02B6/42 , G02B6/10
CPC分类号： G02F1/313 , B82Y20/00 , G02B6/1225 , G02F2202/32
摘要： An object of the present invention is to provide a two-dimensional photonic crystal which can be used for optical path changeover switches or the like to allow switching of a path. A first area 121 and a second area 122 provided with holes 131 and 132 having a difference in the period and size are created on a body 11, and a main waveguide 15 is formed to obliquely cross a boundary 14 between these areas. A branch waveguide 17 branched from the main waveguide 15 into the first area 121 side is also formed by using a crossing point between the main waveguide 15 and the boundary 14 as a starting point. The second area 122 is heated to change a refractive index of the body within the area, so that a frequency band which can be passed through the main waveguide 15 of the second area 122 is changed. Light having a specific frequency and propagated through the main waveguide 15 from the first area 121 side is switched to be extracted from the main waveguide 15 on the second area 122 side or to be extracted from the branch waveguide 17 without propagating the main waveguide 15 on the second area 122, in response to whether or not the heating is performed.
摘要翻译：本发明的目的是提供一种二维光子晶体，其可以用于光路切换开关等，以允许路径的切换。在主体11上形成有具有周期和尺寸差异的孔131和132的第一区域121和第二区域122，并且主波导15形成为跨越这些区域之间的边界14。从主波导15分支到第一区域121侧的分支波导管17也通过以主波导15和边界14之间的交叉点为起点形成。第二区域122被加热以改变该区域内的物体的折射率，使得能够通过第二区域122的主波导15的频带发生变化。具有特定频率并且从第一区域121侧通过主波导15传播的光被切换为从第二区域122侧的主波导15中提取或者从分支波导17提取而不将主波导15传播响应于是否执行加热，第二区域122。

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