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1. 发明授权

US07509013B2 Two-dimensional photonic crystal 有权
标题翻译：二维光子晶体
公开(公告)号：US07509013B2
公开(公告)日：2009-03-24
申请号：US11795991
申请日：2006-01-31
申请人： Susumu Noda , Takashi Asano , Seiichi Takayama , Ranko Hatsuda
发明人： Susumu Noda , Takashi Asano , Seiichi Takayama , Ranko Hatsuda
IPC分类号： G02B6/10
CPC分类号： B82Y20/00 , G02B6/1225
摘要： An objective of the present invention is to provide a two-dimensional photonic crystal in which a complete photonic band gap (PBG), i.e. a photonic band gap that is effective for both a TE-polarized light and a TM-polarized light within a predetermined wavelength range, is created and an adequate width of the complete PBG can be ensured. A slab-shaped body 21 consisting of a birefringent material is provided with holes 22 periodically arranged in a triangular lattice pattern, where a plane shape of the hole is an equilateral triangle. The PBG for the TE-polarized light and the PBG for the TM-polarized light can be independently set by adjusting anisotropy in the refractive index of the body 21, i.e. a refractive index in a direction vertical to the body 21 and a refractive index in a direction parallel to the body 21. This construction makes it possible to ensure an adequate width of the complete PBG.
摘要翻译：本发明的目的是提供一种二维光子晶体，其中完整的光子带隙（PBG），即对预定的TE偏振光和TM偏振光两者都有效的光子带隙波长范围，并且可以确保完整PBG的足够宽度。由双折射材料构成的板状体21设置有以三角形格子图案周期性排列的孔22，孔的平面形状为等边三角形。用于TE偏振光的PBG和用于TM偏振光的PBG可以通过调节主体21的折射率的各向异性，即垂直于主体21的方向上的折射率和折射率，独立地设定平行于主体21的方向。这种结构使得可以确保完整的PBG的宽度。

2. 发明申请

US20080112679A1 Two-Dimensional Photonic Crystal 有权
标题翻译：二维光子晶体
公开(公告)号：US20080112679A1
公开(公告)日：2008-05-15
申请号：US11795991
申请日：2006-01-31
申请人： Susumu Noda , Takashi Asano , Seiichi Takayama , Ranko Hatsuda
发明人： Susumu Noda , Takashi Asano , Seiichi Takayama , Ranko Hatsuda
IPC分类号： G02B6/10
CPC分类号： B82Y20/00 , G02B6/1225
摘要： An objective of the present invention is to provide a two-dimensional photonic crystal in which a complete photonic band gap (PBG), i.e. a photonic band gap that is effective for both a TE-polarized light and a TM-polarized light within a predetermined wavelength range, is created and an adequate width of the complete PBG can be ensured. A slab-shaped body 21 consisting of a birefringent material is provided with holes 22 periodically arranged in a triangular lattice pattern, where a plane shape of the hole is an equilateral triangle. The PBG for the TE-polarized light and the PBG for the TM-polarized light can be independently set by adjusting anisotropy in the refractive index of the body 21, i.e. a refractive index in a direction vertical to the body 21 and a refractive index in a direction parallel to the body 21. This construction makes it possible to ensure an adequate width of the complete PBG.
摘要翻译：本发明的目的是提供一种二维光子晶体，其中完整的光子带隙（PBG），即对预定的TE偏振光和TM偏振光两者都有效的光子带隙波长范围，并且可以确保完整PBG的足够宽度。由双折射材料构成的板状体21设置有以三角形格子图案周期性排列的孔22，孔的平面形状为等边三角形。用于TE偏振光的PBG和用于TM偏振光的PBG可以通过调节主体21的折射率的各向异性，即垂直于主体21的方向上的折射率和折射率，独立地设定平行于主体21的方向。这种结构使得可以确保完整的PBG的宽度。

3. 发明授权

US07509014B2 Two-dimensional photonic crystal having air-bridge structure and method for manufacturing such a crystal 有权
标题翻译：具有气桥结构的二维光子晶体及其制造方法
公开(公告)号：US07509014B2
公开(公告)日：2009-03-24
申请号：US12004029
申请日：2007-12-20
申请人： Ranko Hatsuda , Susumu Noda , Takashi Asano , Yoshinori Tanaka , Eiji Miyai
发明人： Ranko Hatsuda , Susumu Noda , Takashi Asano , Yoshinori Tanaka , Eiji Miyai
IPC分类号： G02B6/00 , G02B6/10
CPC分类号： G02B6/13 , B82Y20/00 , G02B6/12004 , G02B6/12007 , G02B6/1225
摘要： The present invention intends to provide a two-dimensional photonic crystal having a high level of mechanical strength and functioning as a high-efficiency resonator. The two-dimensional photonic crystal according to the present invention includes a slab layer 31 under which a clad layer 32 is located. In the slab layer 31, areas 35 having a refractive index different from that of the slab layer 31 are cyclically arranged to create a two-dimensional photonic crystal. A portion of the cyclic arrangement of the areas 35 are omitted to form a point-like defect 36. This defect 36 functions as a resonator at which a specific wavelength of light resonates. An air-bridge cavity 37 facing the point-like defect 36 is formed over a predetermined range of the clad layer 32. In this construction, the clad layer 32 supports the slab layer 31 except for the range over which the air-bridge space 37 is formed. Therefore, the two-dimensional photonic crystal has a high level of mechanical strength. The presence of the air-bridge space 37 under the point-like defect 36 makes it easy to confine light at the point-like defect 36 by the difference in the refractive index between the slab layer 31 and the air. Thus, the point-like defect 36 functions as a high-performance resonator.
摘要翻译：本发明旨在提供具有高水平机械强度并用作高效率谐振器的二维光子晶体。根据本发明的二维光子晶体包括平坦层31，覆层32位于其下方。在板坯层31中，具有不同于板坯层31的折射率的区域35循环地布置以产生二维光子晶体。区域35的循环布置的一部分被省略以形成点状缺陷36.该缺陷36用作特定波长的光谐振的谐振器。在包覆层32的预定范围上形成面向点状缺陷36的空气桥腔37.在该结构中，包覆层32支撑板层31，除了空气桥空间37 形成了。因此，二维光子晶体具有高水平的机械强度。点状缺陷36之下的空气桥空间37的存在使得容易通过板状层31和空气之间的折射率差来限制点状缺陷36处的光。因此，点状缺陷36用作高性能谐振器。

4. 发明申请

US20080145012A1 Two-dimensional photonic crystal having air-bridge structure and method for manufacturing such a crystal 有权
标题翻译：具有气桥结构的二维光子晶体及其制造方法
公开(公告)号：US20080145012A1
公开(公告)日：2008-06-19
申请号：US12004029
申请日：2007-12-20
申请人： Ranko Hatsuda , Susumu Noda , Takashi Asano , Yoshinori Tanaka , Eiji Miyai
发明人： Ranko Hatsuda , Susumu Noda , Takashi Asano , Yoshinori Tanaka , Eiji Miyai
IPC分类号： G02B6/10
CPC分类号： G02B6/13 , B82Y20/00 , G02B6/12004 , G02B6/12007 , G02B6/1225
摘要： The present invention intends to provide a two-dimensional photonic crystal having a high level of mechanical strength and functioning as a high-efficiency resonator. The two-dimensional photonic crystal according to the present invention includes a slab layer 31 under which a clad layer 32 is located. In the slab layer 31, areas 35 having a refractive index different from that of the slab layer 31 are cyclically arranged to create a two-dimensional photonic crystal. A portion of the cyclic arrangement of the areas 35 are omitted to form a point-like defect 36. This defect 36 functions as a resonator at which a specific wavelength of light resonates. An air-bridge cavity 37 facing the point-like defect 36 is formed over a predetermined range of the clad layer 32. In this construction, the clad layer 32 supports the slab layer 31 except for the range over which the air-bridge space 37 is formed. Therefore, the two-dimensional photonic crystal has a high level of mechanical strength. The presence of the air-bridge space 37 under the point-like defect 36 makes it easy to confine light at the point-like defect 36 by the difference in the refractive index between the slab layer 31 and the air. Thus, the point-like defect 36 functions as a high-performance resonator.
摘要翻译：本发明旨在提供具有高水平机械强度并用作高效率谐振器的二维光子晶体。根据本发明的二维光子晶体包括平坦层31，覆层32位于其下方。在板坯层31中，具有不同于板坯层31的折射率的区域35循环地布置以产生二维光子晶体。区域35的循环布置的一部分被省略以形成点状缺陷36。该缺陷36用作特定波长的光谐振的谐振器。在包层32的预定范围上形成面向点状缺陷36的空气桥腔37。在这种结构中，除了形成空气桥隔间37的范围之外，包覆层32支撑板层31。因此，二维光子晶体具有高水平的机械强度。点状缺陷36之下的空气桥空间37的存在使得容易通过板状层31和空气之间的折射率差来限制点状缺陷36处的光。因此，点状缺陷36用作高性能谐振器。

5. 发明授权

US07333703B2 Two-dimensional photonic crystal having air-bridge structure and method for manufacturing such a crystal 有权
标题翻译：具有气桥结构的二维光子晶体及其制造方法
公开(公告)号：US07333703B2
公开(公告)日：2008-02-19
申请号：US10569879
申请日：2004-08-27
申请人： Ranko Hatsuda , Susumu Noda , Takashi Asano , Yoshinori Tanaka , Eiji Miyai
发明人： Ranko Hatsuda , Susumu Noda , Takashi Asano , Yoshinori Tanaka , Eiji Miyai
IPC分类号： G02B6/10 , C03B37/023 , C03B37/022 , C03B37/027
CPC分类号： G02B6/13 , B82Y20/00 , G02B6/12004 , G02B6/12007 , G02B6/1225
摘要： The present invention intends to provide a two-dimensional photonic crystal having a high level of mechanical strength and functioning as a high-efficiency resonator. The two-dimensional photonic crystal according to the present invention includes a slab layer 31 under which a clad layer 32 is located. In the slab layer 31, areas 35 having a refractive index different from that of the slab layer 31 are cyclically arranged to create a two-dimensional photonic crystal. A portion of the cyclic arrangement of the areas 35 are omitted to form a point-like defect 36. This defect 36 functions as a resonator at which a specific wavelength of light resonates. An air-bridge cavity 37 facing the point-like defect 36 is formed over a predetermined range of the clad layer 32. In this construction, the clad layer 32 supports the slab layer 31 except for the range over which the air-bridge space 37 is formed. Therefore, the two-dimensional photonic crystal has a high level of mechanical strength. The presence of the air-bridge space 37 under the point-like defect 36 makes it easy to confine light at the point-like defect 36 by the difference in the refractive index between the slab layer 31 and the air. Thus, the point-like defect 36 functions as a high-performance resonator.
摘要翻译：本发明旨在提供具有高水平机械强度并用作高效率谐振器的二维光子晶体。根据本发明的二维光子晶体包括平坦层31，覆层32位于其下方。在板坯层31中，具有不同于板坯层31的折射率的区域35循环地布置以产生二维光子晶体。区域35的循环布置的一部分被省略以形成点状缺陷36.该缺陷36用作特定波长的光谐振的谐振器。在包覆层32的预定范围上形成面向点状缺陷36的空气桥腔37.在该结构中，包覆层32支撑板层31，除了空气桥空间37 形成了。因此，二维光子晶体具有高水平的机械强度。点状缺陷36之下的空气桥空间37的存在使得容易通过板状层31和空气之间的折射率差来限制点状缺陷36处的光。因此，点状缺陷36用作高性能谐振器。

6. 发明申请

US20070009219A1 Two-dimensional photonic crystal having air-bridge structure and method for manufacturing such a crystal 有权
标题翻译：具有气桥结构的二维光子晶体及其制造方法
公开(公告)号：US20070009219A1
公开(公告)日：2007-01-11
申请号：US10569879
申请日：2004-08-27
申请人： Ranko Hatsuda , Susumu Noda , Takashi Asano , Yoshinori Tanaka , Eiji Miyai
发明人： Ranko Hatsuda , Susumu Noda , Takashi Asano , Yoshinori Tanaka , Eiji Miyai
IPC分类号： G02B6/10
CPC分类号： G02B6/13 , B82Y20/00 , G02B6/12004 , G02B6/12007 , G02B6/1225
摘要： The present invention intends to provide a two-dimensional photonic crystal having a high level of mechanical strength and functioning as a high-efficiency resonator. The two-dimensional photonic crystal according to the present invention includes a slab layer 31 under which a clad layer 32 is located. In the slab layer 31, areas 35 having a refractive index different from that of the slab layer 31 are cyclically arranged to create a two-dimensional photonic crystal. A portion of the cyclic arrangement of the areas 35 are omitted to form a point-like defect 36. This defect 36 functions as a resonator at which a specific wavelength of light resonates. An air-bridge cavity 37 facing the point-like defect 36 is formed over a predetermined range of the clad layer 32. In this construction, the clad layer 32 supports the slab layer 31 except for the range over which the air-bridge space 37 is formed. Therefore, the two-dimensional photonic crystal has a high level of mechanical strength. The presence of the air-bridge space 37 under the point-like defect 36 makes it easy to confine light at the point-like defect 36 by the difference in the refractive index between the slab layer 31 and the air. Thus, the point-like defect 36 functions as a high-performance resonator.
摘要翻译：本发明旨在提供具有高水平机械强度并用作高效率谐振器的二维光子晶体。根据本发明的二维光子晶体包括平坦层31，覆层32位于其下方。在板坯层31中，具有不同于板坯层31的折射率的区域35循环地布置以产生二维光子晶体。区域35的循环布置的一部分被省略以形成点状缺陷36.该缺陷36用作特定波长的光谐振的谐振器。在包覆层32的预定范围上形成面向点状缺陷36的空气桥腔37.在该结构中，包覆层32支撑板层31，除了空气桥空间37 形成了。因此，二维光子晶体具有高水平的机械强度。点状缺陷36之下的空气桥空间37的存在使得容易通过板状层31和空气之间的折射率差来限制点状缺陷36处的光。因此，点状缺陷36用作高性能谐振器。

7. 发明授权

US07853111B2 Two-dimensional photonic crystal 有权
标题翻译：二维光子晶体
公开(公告)号：US07853111B2
公开(公告)日：2010-12-14
申请号：US10591299
申请日：2005-03-04
申请人： Susumu Noda , Takashi Asano , Seiichi Takayama , Hitoshi Kitagawa
发明人： Susumu Noda , Takashi Asano , Seiichi Takayama , Hitoshi Kitagawa
IPC分类号： G02B6/10
CPC分类号： B82Y20/00 , G02B6/1225 , G02B6/29325 , G02B6/2938
摘要： The present invention provides a two-dimensional photonic crystal in which an absolute photonic band gap (PBG), i.e. a photonic band gap that is effective for both the TE-polarized light and the TM-polarized light within a predetermined wavelength range, is created with an adequate bandwidth. The body 21 is provided with holes 22 arranged in a triangular lattice pattern, where the basic shape of the hole is an equilateral triangle. This shaping and arranging of the holes creates an absolute PBG. Each corner of the equilateral triangle is cut along an arc to leave an adequate distance between the neighboring holes (i.e. an adequate width of the connecting portion of the body). This design makes it possible to enlarge each hole 22 while ensuring an adequate strength of the two-dimensional photonic crystal. This construction creates an absolute PBG having a large width.
摘要翻译：本发明提供一种二维光子晶体，其中产生绝对光子带隙（PBG），即对预定波长范围内的TE偏振光和TM偏振光有效的光子带隙，具有足够的带宽。主体21设置有以三角形格子图案布置的孔22，其中孔的基本形状为等边三角形。这种孔的形成和排列创建了绝对的PBG。等边三角形的每个角都沿弧线切割，以在相邻的孔之间留下足够的距离（即，身体的连接部分的适当宽度）。该设计使得可以在确保二维光子晶体的足够强度的同时放大每个孔22。这种结构创建了宽度大的绝对PBG。

8. 发明授权

US07738749B2 Photonic crystal having heterostructure and optical device using the photonic crystal 有权
标题翻译：具有异质结构的光子晶体和使用光子晶体的光学器件
公开(公告)号：US07738749B2
公开(公告)日：2010-06-15
申请号：US10584942
申请日：2005-03-24
申请人： Susumu Noda , Takashi Asano , Seiichi Takayama
发明人： Susumu Noda , Takashi Asano , Seiichi Takayama
IPC分类号： G02B6/28 , G02B6/26 , G02B6/42 , G02B6/032
CPC分类号： B82Y20/00 , G02B6/12004 , G02B6/1225
摘要： The present invention has been made for providing a photonic crystal capable of multiplexing or demultiplexing light within a wavelength band having a certain width. It includes a slab-shaped body 21 provided with plural forbidden band zones 211 and 212, and holes 221 and 222 having different sizes are arranged in the forbidden band zones with different cycles, respectively. Also formed are a trunk waveguide 24 extending along the direction inclined by +30 degrees from a perpendicular of the boundary 23 between the forbidden band zones 211 and 212, and a branch waveguide 25 extending along the direction inclined by −30 degrees. A ray of light within the multiplexed/demultiplexed wavelength band, which is excluded from the transmission wavelength band of the trunk waveguide 24 in the forbidden band zone 212 and included in the transmission wavelength band of the trunk waveguide 24 in the forbidden band zone 211, is reflected by the boundary 23 and thereby demultiplexed from the trunk waveguide 24 into the branch waveguide 25. Thus, all the rays of light whose wavelengths are within the multiplexed/demultiplexed wavelength band having a certain width are demultiplexed into the branch waveguide 25. Therefore, even if the wavelength of the optical signal is deviated due to some error, the light can be demultiplexed. This is also true for the multiplexing operation.
摘要翻译：本发明是为了提供能够在具有一定宽度的波长带内复用或分离光的光子晶体。它包括设置有多个禁带区211和212的板状主体21，并且具有不同尺寸的孔221和222分别布置在不同周期的禁带区中。还形成有沿着从禁带区211和212之间的边界23的垂直方向倾斜±30度的方向延伸的主干波导24和沿着倾斜-30度的方向延伸的分支波导25。在禁带区域212中被包含在主干波导24的传输波长带中的禁带区域211中从干线波导24的传输波长带排除的复用/解复用波长带内的光线，由边界23反射，从而从主干波导24分离成分支波导25.因此，波长在具有一定宽度的复用/解复用波长带内的所有光线被解复用到分支波导25中。因此即使光信号的波长由于一些误差而偏离，也可以将光解复用。这对于多路复用操作也是如此。

9. 发明授权

US07711228B2 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：US07711228B2
公开(公告)日：2010-05-04
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： G02B6/10
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。上述截面形状沿着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。

10. 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。

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