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1. 发明授权

US07298934B2 Optical fiber and method of measuring polarization mode dispersion of optical fiber 有权
标题翻译：光纤和光纤偏振模色散测量方法
公开(公告)号：US07298934B2
公开(公告)日：2007-11-20
申请号：US11405407
申请日：2006-04-18
申请人： Ryuichiro Goto , Shoji Tanigawa , Shoichiro Matsuo , Kuniharu Himeno
发明人： Ryuichiro Goto , Shoji Tanigawa , Shoichiro Matsuo , Kuniharu Himeno
IPC分类号： G02B6/00 , G01N21/00 , H04J14/02
CPC分类号： G02B6/02285 , G01M11/3181
摘要： A method of measuring polarization mode dispersion (PMD) of an optical fiber, includes estimating PMD when an optical fiber is formed as an optical cable, from a beat length when the optical fiber is wound around a bobbin, and an average coupling length when the optical fiber is formed as the optical cable.
摘要翻译：测量光纤的偏振模色散（PMD）的方法包括：当光纤缠绕在绕线管上时，从形成光纤作为光缆的估计PMD，以及当光纤缠绕在绕线管上时的平均耦合长度形成光纤作为光缆。

2. 发明申请

US20060192942A1 Optical fiber and method of measuring polarization mode dispersion of optical fiber 有权
标题翻译：光纤和光纤偏振模色散测量方法
公开(公告)号：US20060192942A1
公开(公告)日：2006-08-31
申请号：US11405407
申请日：2006-04-18
申请人： Ryuichiro Goto , Shoji Tanigawa , Shoichiro Matsuo , Kuniharu Himeno
发明人： Ryuichiro Goto , Shoji Tanigawa , Shoichiro Matsuo , Kuniharu Himeno
IPC分类号： G02B6/02 , G02B6/036 , G01N21/00
CPC分类号： G02B6/02285 , G01M11/3181
摘要： A method of measuring polarization mode dispersion (PMD) of an optical fiber, includes estimating PMD when an optical fiber is formed as an optical cable, from a beat length when the optical fiber is wound around a bobbin, and an average coupling length when the optical fiber is formed as the optical cable.
摘要翻译：测量光纤的偏振模色散（PMD）的方法包括：当光纤缠绕在绕线管上时，从形成光纤作为光缆的估计PMD，以及当光纤缠绕在绕线管上时的平均耦合长度形成光纤作为光缆。

3. 发明授权

US07463346B2 Optical fiber birefringence measurement method and measurement device, and optical fiber polarization mode dispersion measurement method and optical fiber 失效
公开(公告)号：US07463346B2
公开(公告)日：2008-12-09
申请号：US11870246
申请日：2007-10-10
申请人： Ryuichiro Goto , Shoichiro Matsuo , Kuniharu Himeno
发明人： Ryuichiro Goto , Shoichiro Matsuo , Kuniharu Himeno
IPC分类号： G01N21/00
CPC分类号： G01M11/3145 , G01M11/3181
摘要： In a method of measurement of the birefringence of an optical fiber, the round-trip Jones matrix R(z) for a first interval (0, z) from a measurement starting point 0 in the optical fiber for measurement to a prescribed position z, and the round-trip Jones matrix R(z+Δz) for a second interval (0, z+Δz) from the measurement starting point 0 to a position z+Δz differing from the position z, are acquired, the eigenvalues ρ1, ρ2 of the matrix R(z+Δz)R(z)−1 are determined, and by computing the following equations (1) and (2), ϕ = arg ⁡ ( ρ 1 ρ 2 ) 2 ( 1 ) Δ ⁢ ⁢ n = λϕ 2 ⁢ π · Δ ⁢ ⁢ z ( 2 ) (where φ represents the phase difference between linear polarization components due to birefringence, Δn represents birefringence, and λ represents wavelength), the birefringence in the infinitesimal interval Δz from the position z to the position z+Δz is obtained.

4. 发明授权

US08564877B2 Photonic bandgap fiber and fiber amplifier 有权
标题翻译：光子带隙光纤和光纤放大器
公开(公告)号：US08564877B2
公开(公告)日：2013-10-22
申请号：US12430346
申请日：2009-04-27
申请人： Ryuichiro Goto
发明人： Ryuichiro Goto
IPC分类号： H04B10/17 , G02B6/036
CPC分类号： G02B6/02357 , G02B6/02347 , H01S3/06712 , H01S3/06729 , H01S3/06741 , H01S3/0675 , H01S3/094007 , H01S2301/02
摘要： A photonic bandgap fiber includes a core of a solid material; a first cladding provided around the core; a low-refractive-index region provided in a part of a core vicinity portion of the first cladding and whose average refractive index is lower than that of the core; and a periodic structure region that is arranged in another part of the core vicinity portion of the first cladding which is made of a great many high-refractive-index portions whose refractive index is higher than that of the first cladding arranged in a periodic structure. According to the invention, it is possible to provide a photonic bandgap fiber which, when arranged in a double-clad structure, enables pump light to efficiently pump signal light.
摘要翻译：光子带隙光纤包括固体材料的核心; 围绕芯部设置的第一包层; 低折射率区域，设置在第一包层的芯部附近部分的一部分，平均折射率低于芯的折射率; 以及周期性结构区域，其布置在第一包层的芯部附近部分的另一部分中，该多个高折射率部分的折射率高于以周期性结构排列的第一包层的折射率部分。根据本发明，可以提供一种光子带隙光纤，当布置在双包层结构中时，能够使泵浦光有效地泵浦信号光。

5. 发明授权

US08035891B2 Photonic bandgap fiber 有权
标题翻译：光子带隙光纤
公开(公告)号：US08035891B2
公开(公告)日：2011-10-11
申请号：US12429683
申请日：2009-04-24
申请人： Ryuichiro Goto
发明人： Ryuichiro Goto
IPC分类号： G02B6/02 , G02B6/036 , H04B10/17
CPC分类号： G02B6/02347 , G02B6/02357 , H01S3/06708
摘要： A photonic bandgap fiber includes a core and a cladding that surrounds the core. In this photonic bandgap fiber, high refractive index portions which have a refractive index higher than that of a medium of the cladding are provided in the cladding so as to form a triangular lattice structure with a lattice constant Λ, and the refractive index of the core is higher than the refractive index of the medium of the cladding and lower than the refractive index of the high refractive index portion. The coupling length between the core and the high refractive index portion that is closest to the core is longer than the coupling length between adjacent high refractive index portions, or a periodic structure formed by the high refractive index portions is not provided around the entirely of the area along the circumference of the core.
摘要翻译：光子带隙光纤包括芯和围绕芯的包层。在该光子带隙光纤中，在包层中设置折射率高于包层介质的折射率部分，形成具有晶格常数Λ的三角形晶格结构，并且芯体的折射率高于包层的介质的折射率，并且低于高折射率部分的折射率。最靠近芯的芯和高折射率部分之间的耦合长度大于相邻的高折射率部分之间的耦合长度，或者由高折射率部分形成的周期性结构不是在整个沿核心圆周的区域。

6. 发明授权

US08031999B2 Photonic band-gap fiber 有权
标题翻译：光子带隙光纤
公开(公告)号：US08031999B2
公开(公告)日：2011-10-04
申请号：US12554576
申请日：2009-09-04
申请人： Ryuichiro Goto
发明人： Ryuichiro Goto
IPC分类号： G02B6/02
CPC分类号： G02B6/02323 , G02B6/02095 , G02B6/02338 , G02B6/02347 , G02B6/02357 , G02B6/0238 , G02B6/024 , G02B6/03644
摘要： A photonic band-gap fiber comprises a first core having a refractive index that is not higher than a refractive index of a clad; a second core that is disposed so as to surround the first core and has a refractive index that is lower than the refractive index of the first core; a clad that surrounds the second core; and a periodic structure portion that is disposed in the clad in a vicinity of the second core and is constituted by high-refractive index portions that have a refractive index higher than that of clad and form the periodic structure, and the periodic-structure portion functions as a wave-length filter. By the function of the periodic structure portion as a wave-length filter, it is possible to reduce the propagation loss of the transmission wavelength and increase the propagation loss of the cutoff wavelength.
摘要翻译：光子带隙光纤包括折射率不高于包层的折射率的第一纤芯; 第二芯，其被布置为围绕第一芯并且具有低于第一芯的折射率的折射率; 围绕第二核的包层; 以及周期性结构部分，其设置在所述第二芯部附近的所述包层中，并且由折射率高于包层的折射率部分构成，并且形成周期性结构，并且所述周期性结构部分功能作为波长滤波器。通过作为波长滤波器的周期性结构部分的功能，可以减少透射波长的传播损耗并增加截止波长的传播损耗。

7. 发明授权

US07978947B2 Photonic bandgap fiber 有权
标题翻译：光子带隙光纤
公开(公告)号：US07978947B2
公开(公告)日：2011-07-12
申请号：US12550024
申请日：2009-08-28
申请人： Ryuichiro Goto
发明人： Ryuichiro Goto
IPC分类号： G02B6/032
CPC分类号： G02B6/02347 , G02B6/02323 , G02B6/02338 , G02B6/0238 , G02B6/03644 , H01S3/06741 , H01S3/302
摘要： A photonic bandgap fiber includes a first core having a refractive index equal to or smaller than a refractive index of a cladding, a second core that is provided to surround the first core and has a refractive index smaller than the refractive index of the first core, the cladding that surrounds the second core, and a periodic structure portion that is provided in the cladding around the second core, and in which high-refractive index portions having a refractive index larger than the refractive index of the cladding form a periodic structure. The periodic structure is configured such that at least the propagation constant of the fundamental mode at a wavelength to be used is in a photonic bandgap, and the propagation constant of a higher-order mode at the wavelength to be used is outside of the photonic bandgap.
摘要翻译：光子带隙光纤包括具有等于或小于包层的折射率的折射率的第一纤芯，设置成围绕第一纤芯并且折射率小于第一纤芯的折射率的第二纤芯，围绕第二芯的包层以及围绕第二芯设置在包层中的周期性结构部分，其中折射率大于包层的折射率的高折射率部分形成周期性结构。周期性结构被配置为使得至少所使用的波长处的基模的传播常数处于光子带隙中，并且所使用的波长处的高阶模的传播常数在光子带隙之外。

8. 发明申请

US20090324186A1 PHOTONIC BAND-GAP FIBER 有权
标题翻译：光电胶带光纤
公开(公告)号：US20090324186A1
公开(公告)日：2009-12-31
申请号：US12554576
申请日：2009-09-04
申请人： Ryuichiro Goto
发明人： Ryuichiro Goto
IPC分类号： G02B6/036
CPC分类号： G02B6/02323 , G02B6/02095 , G02B6/02338 , G02B6/02347 , G02B6/02357 , G02B6/0238 , G02B6/024 , G02B6/03644
摘要： A photonic band-gap fiber comprises a first core having a refractive index that is not higher than a refractive index of a clad; a second core that is disposed so as to surround the first core and has a refractive index that is lower than the refractive index of the first core; a clad that surrounds the second core; and a periodic structure portion that is disposed in the clad in a vicinity of the second core and is constituted by high-refractive index portions that have a refractive index higher than that of clad and form the periodic structure, and the periodic-structure portion functions as a wave-length filter. By the function of the periodic structure portion as a wave-length filter, it is possible to reduce the propagation loss of the transmission wavelength and increase the propagation loss of the cutoff wavelength.
摘要翻译：光子带隙光纤包括折射率不高于包层的折射率的第一纤芯; 第二芯，其被布置为围绕第一芯并且具有低于第一芯的折射率的折射率; 围绕第二核的包层; 以及周期性结构部分，其设置在所述第二芯部附近的所述包层中，并且由折射率高于包层的折射率部分构成，并且形成周期性结构，并且所述周期性结构部分功能作为波长滤波器。通过作为波长滤波器的周期性结构部分的功能，可以减少透射波长的传播损耗并增加截止波长的传播损耗。

9. 发明申请

US20090207483A1 PHOTONIC BANDGAP FIBER AND FIBER AMPLIFIER 有权
标题翻译：光电带光纤和光纤放大器
公开(公告)号：US20090207483A1
公开(公告)日：2009-08-20
申请号：US12430346
申请日：2009-04-27
申请人： Ryuichiro Goto
发明人： Ryuichiro Goto
IPC分类号： H01S3/00 , G02B6/00
CPC分类号： G02B6/02357 , G02B6/02347 , H01S3/06712 , H01S3/06729 , H01S3/06741 , H01S3/0675 , H01S3/094007 , H01S2301/02
摘要： A photonic bandgap fiber includes a core of a solid material; a first cladding provided around the core; a low-refractive-index region provided in a part of a core vicinity portion of the first cladding and whose average refractive index is lower than that of the core; and a periodic structure region that is arranged in another part of the core vicinity portion of the first cladding which is made of a great many high-refractive-index portions whose refractive index is higher than that of the first cladding arranged in a periodic structure. According to the invention, it is possible to provide a photonic bandgap fiber which, when arranged in a double-clad structure, enables pump light to efficiently pump signal light.
摘要翻译：光子带隙光纤包括固体材料的核心; 围绕芯部设置的第一包层; 低折射率区域，设置在第一包层的芯部附近部分的一部分，平均折射率低于芯的折射率; 以及周期性结构区域，其布置在第一包层的芯部附近部分的另一部分中，该多个高折射率部分的折射率高于以周期性结构排列的第一包层的折射率部分。根据本发明，可以提供一种光子带隙光纤，当布置在双包层结构中时，能够使泵浦光有效地泵浦信号光。

10. 发明授权

US06891147B2 Wavelength-selective diffraction element and an optical head device 有权
$Wavelength-selective diffraction element and an optical head device$
标题翻译：波长选择性衍射元件和光学头装置
公开(公告)号：US06891147B2
公开(公告)日：2005-05-10
申请号：US10639507
申请日：2003-08-13
申请人： Ryuichiro Goto , Hiroki Hotaka , Yoshiharu Ooi , Reiko Nozawa , Noriaki Shimodaira , Ryota Murakami
发明人： Ryuichiro Goto , Hiroki Hotaka , Yoshiharu Ooi , Reiko Nozawa , Noriaki Shimodaira , Ryota Murakami
IPC分类号： G11B7/1353 , G02B5/18 , G02B5/20 , G02B27/10 , G11B7/00 , G11B7/09 , G11B11/00
CPC分类号： G11B7/1353 , G02B5/1866 , G02B5/203 , G02B27/1006 , G02B27/1086 , G02B27/144 , G02B27/145 , G11B7/127 , G11B2007/0006
摘要： An optical head device having an optical element capable of transmitting without diffracting light having a wavelength emitted from a two-wavelength semiconductor laser and capable of diffracting light having another wavelength, to provide high utilization efficiency of light in a stable manner.For this purpose, a wavelength-selective diffraction element 1A comprising a transparent substrate having a front surface on which a grating having a periodically recessed and projected shape in cross section is formed and a filling member 13A filled in the concavo-convex portion 12A of the grating wherein the concavo-convex portion of the grating is provided with an organic pigment having the absorption edge of light in a region having a shorter wavelength than the wavelength λ1, and the concavo-convex member and the filling member have the same refractive index with respect to either one of light having a wavelength λ1 and light having a wavelength λ2, and they have different refractive indices with respect to the other light having a wavelength, is disposed between the light source and the objective lens of the optical head device.
摘要翻译：一种具有光学元件的光学头装置，其能够在不衍射具有从双波长半导体激光器发射的波长的光并且能够衍射具有另一波长的光的情况下传输，从而以稳定的方式提供高的光的利用效率。为此目的，一种波长选择性衍射元件1A，其包括具有前表面的透明基板，其上形成有横截面为周期性凹凸形状的光栅;填充部件13A，其填充在凹凸部12中 A的光栅，其中光栅的凹凸部分设置有在波长比波长λ1更短的区域中具有光的吸收边的有机颜料，并且凹凸构件和填充构件相对于具有波长λ1的光和具有波长λ2的光的任一个具有相同的折射率，并且它们具有不同的折射率相对于具有波长的其他光，设置在光学头与光学头装置的物镜之间。

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