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公开(公告)号：US5949934A
公开(公告)日：1999-09-07
申请号：US823629
申请日：1997-03-26
申请人： Kensuke Shima , Michihiro Nakai , Hiroshi Hidaka , Kuniharu Himeno , Satoshi Okude , Akira Wada , Masaaki Sudoh , Tetsuya Sakai , Takuya Ienaka , Ryozo Yamauchi
发明人： Kensuke Shima , Michihiro Nakai , Hiroshi Hidaka , Kuniharu Himeno , Satoshi Okude , Akira Wada , Masaaki Sudoh , Tetsuya Sakai , Takuya Ienaka , Ryozo Yamauchi
CPC分类号： G02B6/124 , G02B6/021 , G02B6/0218 , G02B6/0219
摘要： An optical waveguide grating with radiative mode-coupling properties, with exceptional stability and reliability as an optical component, wherein the central wavelength of the rejection band has a low temperature dependence, due to the use of silica glass doped with germanium and boron for the core. The rejection bandwidth can be narrowed without increasing the grating length by forming the radiative mode-coupled optical waveguide grating in an optical waveguide wherein the mean relative refractive index difference of the core is greater than that of optical communication waveguides. The rejection can be increased by reducing the occurrence of cases wherein propagation modes of the core coupled to cladding modes once again couple to the core in palnar optical waveguide gratings formed by making periodic changes in the waveguide structure along the direction of propagation of light in an optical waveguide having a cladding with a lower refractive index than the core surrounding the core, by making the thickness of the cladding at least thirteen times the thickness of the core.
摘要翻译： 具有辐射模耦合特性的光波导光栅作为光学部件具有出色的稳定性和可靠性，其中由于使用掺杂有锗和硼的石英玻璃作为芯，所以抑制带的中心波长具有低的温度依赖性 。 可以通过在光波导中形成辐射模耦合光波导光栅而不增加光栅长度来减小抑制带宽，其中芯的平均相对折射率差大于光通信波导的平均相对折射率差。 可以通过减少与耦合到包层模式的芯的传播模式再次耦合到palnar光波导光栅中的芯的情况的发生的情况下，可以增加抑制，其通过沿着光的传播方向周期性地改变波导结构而形成 光波导具有通过使包层的厚度至少为芯的厚度的十三倍而具有比围绕芯的芯的折射率低的折射率的包层。
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2.发明授权Method of making an optical waveguide grating with two dissimilar irradiating steps 失效制造具有两个不同辐射步骤的光波导光栅的方法
公开(公告)号：US5996375A
公开(公告)日：1999-12-07
申请号：US837958
申请日：1997-04-14
申请人： Michihiro Nakai , Kensuke Shima , Hiroshi Hidaka , Satoshi Okude , Masaaki Sudoh , Tetsuya Sakai , Akira Wada , Ryozo Yamauchi
发明人： Michihiro Nakai , Kensuke Shima , Hiroshi Hidaka , Satoshi Okude , Masaaki Sudoh , Tetsuya Sakai , Akira Wada , Ryozo Yamauchi
CPC分类号： G02B6/02142 , G02B6/02138 , G02B6/02152
摘要： A method of producing an optical waveguide grating by exposure to light. An optical waveguide having a core composed of a material wherein the refractive index changes due to exposure to UV light is formed into an optical waveguide grating by applying a grating portion formation step wherein a grating portion is formed by irradiation with UV light at a predetermined spacing, and an overall exposure step after formation of the grating portion wherein the entire grating portion is irradiated with UV light. As a result, the effective refractive index of the grating portion is changed so as to allow the central wavelength to be adjusted without changing the rejection. Consequently, the grating properties can be precisely and easily controlled.
摘要翻译： 一种通过曝光产生光波导光栅的方法。 具有由其中由于暴露于UV光而引起的折射率变化的材料的芯构成的光波导通过施加光栅部分形成步骤形成为光波导光栅，其中通过以预定间隔照射UV光形成光栅部分 ，并且在形成光栅部分之后的整体曝光步骤，其中整个光栅部分被UV光照射。 结果，改变了光栅部分的有效折射率，以便可以调节中心波长而不改变排斥。 因此，可以精确且容易地控制光栅特性。
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3.发明授权Optical filter with planar optical waveguide having periodically varied distribution of refractive index and production process thereof 失效具有平面光波导的光学滤波器具有周期性变化的折射率分布及其制造方法
公开(公告)号：US5930437A
公开(公告)日：1999-07-27
申请号：US825912
申请日：1997-04-02
申请人： Michihiro Nakai , Kensuke Shima , Hiroshi Hidaka , Satoshi Okude , Masaaki Sudoh , Tetsuya Sakai , Akira Wada , Ryozo Yamauchi
发明人： Michihiro Nakai , Kensuke Shima , Hiroshi Hidaka , Satoshi Okude , Masaaki Sudoh , Tetsuya Sakai , Akira Wada , Ryozo Yamauchi
CPC分类号： G02B6/124 , G02B2006/12107 , G02B2006/12109
摘要： Core comprises a main stem which is formed on a substrate, linearly extending in the beam propagating direction and short branches with a certain length which extend perpendicularly to the beam propagating direction toward both sides along the plane of the substrate and are arranged at regular intervals in the beam propagating direction. Thus, the branches are arranged in a ladder geometry when it is viewed from the top, forming a rectangular waveform arrangement. The core constitutes a grating structure in which the width of the core is made to vary periodically with the branches in the beam propagating direction.
摘要翻译： 芯部包括形成在基板上的主杆，其在光束传播方向上线性延伸并且具有一定长度的短分支，其沿着基板的平面朝向两侧垂直于光束传播方向延伸，并且以规则的间隔布置 光束传播方向。 因此，当从顶部观察时，分支被布置成梯形几何形状，形成矩形波形布置。 芯构成了光栅结构，其中芯的宽度使光束传播方向上的分支周期性地变化。
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公开(公告)号：US06298183B1
公开(公告)日：2001-10-02
申请号：US09088630
申请日：1998-06-02
申请人： Ryozo Yamauchi , Akira Wada , Tetsuya Sakai , Nobuyuki Tanaka , Kensuke Shima , Kenji Nishide , Shigefumi Yamasaki
发明人： Ryozo Yamauchi , Akira Wada , Tetsuya Sakai , Nobuyuki Tanaka , Kensuke Shima , Kenji Nishide , Shigefumi Yamasaki
IPC分类号： G02B634
CPC分类号： G02B6/02147 , G02B6/02095
摘要： An optical fiber grating is manufactured by heating intermittently an optical fiber, provided with a core having residual stress in the longitudinal direction, softening a peripheral cladding of the core, and forming spatial periodical changes for the relative refractive index-difference between the core and the cladding, in the longitudinal direction of the aforementioned optical fiber by having the index of refraction of the core change, through the releasing of the aforementioned residual stress. As a result, an optical fiber grating and the manufacturing method thereof, which do not require expensive equipment and which exhibit high productivity, and furthermore a grating characteristic which is stable over time can be provided.
摘要翻译： 光纤光栅通过间歇地加热设置有在纵向上具有残余应力的芯的光纤，软化芯的外围包层，并且形成芯与芯的相对折射率差的空间周期性变化 通过释放上述残余应力，通过使芯的折射率变化，在上述光纤的长度方向上包覆。 结果，可以提供不需要昂贵的设备并且表现出高生产率的光纤光栅及其制造方法，此外还可以提供一种随时间稳定的光栅特性。
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公开(公告)号：US06442313B2
公开(公告)日：2002-08-27
申请号：US09777085
申请日：2001-02-05
申请人： Ryozo Yamauchi , Akira Wada , Tetsuya Sakai , Nobuyuki Tanaka , Kensuke Shima , Kenji Nishide , Shigefumi Yamasaki
发明人： Ryozo Yamauchi , Akira Wada , Tetsuya Sakai , Nobuyuki Tanaka , Kensuke Shima , Kenji Nishide , Shigefumi Yamasaki
IPC分类号： G02B634
CPC分类号： G02B6/02147 , G02B6/02095
摘要： An optical fiber grating is manufactured by heating intermittently an optical fiber, provided with a core having residual stress in the longitudinal direction, softening a peripheral cladding of the core, and forming spatial periodical changes for the relative refractive index-difference between the core and the cladding, in the longitudinal direction of the aforementioned optical fiber by having the index of refraction of the core change, through the releasing of the aforementioned residual stress. As a result, an optical fiber grating and the manufacturing method thereof, which do not require expensive equipment and which exhibit high productivity, and furthermore a grating characteristic which is stable over time can be provided.
摘要翻译： 光纤光栅通过间歇地加热设置有在纵向上具有残余应力的芯的光纤，软化芯的外围包层，并且形成芯与芯的相对折射率差的空间周期性变化 通过释放上述残余应力，通过使芯的折射率变化，在上述光纤的长度方向上包覆。 结果，可以提供不需要昂贵的设备并且表现出高生产率的光纤光栅及其制造方法，此外还可以提供一种随时间稳定的光栅特性。
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6.发明申请Optical fiber grating, optical fiber grating manufacturing method, and optical fiber grating manufacturing apparatus 审中-公开光纤光栅，光纤光栅制造方法和光纤光栅制造装置公开(公告)号：US20050041923A1
公开(公告)日：2005-02-24
申请号：US10952092
申请日：2004-09-28
申请人： Yuu Ishii , Michihiro Nakai , Satoshi Okude , Kenji Nishide , Kensuke Shima
发明人： Yuu Ishii , Michihiro Nakai , Satoshi Okude , Kenji Nishide , Kensuke Shima
CPC分类号： G02B6/02185
摘要： The invention provides a method and apparatus that precisely and efficiently improves the optical properties of an optical fiber grating. Preferably hydrogen loading processing, grating formation processing that forms a grating part by irradiation with ultraviolet light at a predetermined period, and preferably dehydrogenation, adjusting the optical properties by a suitable combination of uniform ultraviolet irradiation processing that irradiates the grating part as a whole with ultraviolet light and heat trimming processing, and finally heat aging is carried out.
摘要翻译： 本发明提供了一种精确有效地改善光纤光栅的光学特性的方法和装置。 优选氢负载处理，通过在预定时间内用紫外线照射形成光栅部分的光栅形成处理，优选脱氢，通过将紫外线照射整体照射到紫外线的均匀紫外线照射处理的适当组合来调节光学性能 光和热修整加工，最后进行热老化。
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7.发明授权公开(公告)号：US06819834B2
公开(公告)日：2004-11-16
申请号：US09929934
申请日：2001-08-15
申请人： Yuu Ishii , Michihiro Nakai , Satoshi Okude , Kenji Nishide , Kensuke Shima
发明人： Yuu Ishii , Michihiro Nakai , Satoshi Okude , Kenji Nishide , Kensuke Shima
IPC分类号： G02B634
CPC分类号： G02B6/02185
摘要： The invention provides a method and apparatus that precisely and efficiently improves the optical properties of an optical fiber grating. Preferably hydrogen loading processing, grating formation processing that forms a grating part by irradiation with ultraviolet light at a predetermined period, and preferably dehydrogenation, adjusting the optical properties by a suitable combination of uniform ultraviolet irradiation processing that irradiates the grating part as a whole with ultraviolet light and heat trimming processing, and finally heat aging is carried out.
摘要翻译： 本发明提供了一种精确有效地改善光纤光栅的光学特性的方法和装置。 优选氢负载处理，通过在预定时间内用紫外线照射形成光栅部分的光栅形成处理，优选脱氢，通过将紫外线照射整体照射到紫外线的均匀紫外线照射处理的适当组合来调节光学性能 光和热修整加工，最后进行热老化。
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8.发明授权Method for exciting light for optical amplification medium fiber, structure for emitting excited light into optical amplification medium fiber optical fiber amplifier, and optical fiber laser 有权用于激发光放大介质光纤的方法，将激发光发射到光放大介质光纤光纤放大器和光纤激光器中的结构公开(公告)号：US07065279B2
公开(公告)日：2006-06-20
申请号：US10853114
申请日：2004-05-26
IPC分类号： G02B6/02
CPC分类号： H01S3/06708 , H01S3/094003
摘要： An inner cladding exposure section 14 is formed by removing a part of an outer cladding 4 of an optical amplification medium fiber 10 which has a porous layer 3 between the inner cladding 2 and the outer cladding 4 in a longitudinal direction. An end surface 23 of an optical fiber 20 for the excited light incidence is cemented on an outer periphery of the exposed inner cladding 2. The excited light 24 is incident into the optical amplification medium fiber 10 from the optical fiber 20 for the excited light incidence. By doing this, it is possible to provide a method for exciting a light in an optical amplification medium fiber which can realize a superior amplitude while emitting the excited light so as to be incident into the optical amplification medium fiber highly efficiently.
摘要翻译： 通过在纵向方向上去除在内包层2和外包层4之间具有多孔层3的光学放大介质纤维10的外包层4的一部分来形成内包层曝光部分14。 用于激发的光入射的光纤20的端表面23胶合在暴露的内包层2的外周上。 激发光24从用于激发光入射的光纤20入射到光学放大介质光纤10中。 通过这样做，可以提供一种用于激发光放大介质光纤中的光的方法，其可以在发射激发光的同时实现优异的振幅，从而高效地入射到光放大介质光纤中。
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9.发明授权Amplification optical fiber, and optical fiber amplifier and resonator using the same 有权放大光纤，以及光纤放大器和谐振器使用相同公开(公告)号：US08498044B2
公开(公告)日：2013-07-30
申请号：US12940328
申请日：2010-11-05
申请人： Masahiro Kashiwagi , Kensuke Shima
发明人： Masahiro Kashiwagi , Kensuke Shima
CPC分类号： H01S3/06754 , G02B6/03694 , H01S3/0672 , H01S3/06733 , H01S3/0804 , H01S3/094007 , H01S3/09408
摘要： There are provided an amplification optical fiber, and an optical fiber amplifier and a resonator using the same capable of outputting light of high beam quality even when a higher-order mode that is axially symmetric is excited in addition to LP01 mode.An amplification optical fiber 50 includes: a core 51; a clad 52 coating the core 51; and an outer clad 53 coating the clad 52, wherein the core 51 has a larger refractive index than the clad 52, the core 51 allows light having a predetermined wavelength to propagate in at least LP01 mode and LP02 mode, and in the core 51, active element that stimulates to emit light of the predetermined wavelength is doped at a higher concentration at a position where an intensity of the LP02 mode becomes zero than center of the core 51.
摘要翻译： 提供了一种放大光纤，以及即使在除了LP01模式之外也激发了轴向对称的高阶模式的光纤放大器和使用该光纤放大器的谐振器，其能够输出具有高光束质量的光。 放大光纤50包括：芯51; 涂覆芯51的包层52; 外包层53涂覆包层52，其中芯51具有比包层52更大的折射率，芯51允许具有预定波长的光至少在LP01模式和LP02模式下传播，并且在芯51中， 在LP02模式的强度变得比芯51的中心为零的位置处以更高的浓度掺杂刺激发射预定波长的光的有源元件。
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10.发明申请AMPLIFICATION OPTICAL FIBER, AND OPTICAL FIBER AMPLIFIER AND RESONATOR USING THE SAME 有权放大光纤，光纤放大器和使用相同的光纤放大器公开(公告)号：US20110149383A1
公开(公告)日：2011-06-23
申请号：US12940328
申请日：2010-11-05
申请人： Masahiro Kashiwagi , Kensuke Shima
发明人： Masahiro Kashiwagi , Kensuke Shima
CPC分类号： H01S3/06754 , G02B6/03694 , H01S3/0672 , H01S3/06733 , H01S3/0804 , H01S3/094007 , H01S3/09408
摘要： There are provided an amplification optical fiber, and an optical fiber amplifier and a resonator using the same capable of outputting light of high beam quality even when a higher-order mode that is axially symmetric is excited in addition to LP01 mode.An amplification optical fiber 50 includes: a core 51; a clad 52 coating the core 51; and an outer clad 53 coating the clad 52, wherein the core 51 has a larger refractive index than the clad 52, the core 51 allows light having a predetermined wavelength to propagate in at least LP01 mode and LP02 mode, and in the core 51, active element that stimulates to emit light of the predetermined wavelength is doped at a higher concentration at a position where an intensity of the LP02 mode becomes zero than center of the core 51.
摘要翻译： 提供了一种放大光纤，以及即使在除了LP01模式之外也激发了轴向对称的高阶模式的光纤放大器和使用该光纤放大器的谐振器，其能够输出具有高光束质量的光。 放大光纤50包括：芯51; 涂覆芯51的包层52; 外包层53涂覆包层52，其中芯51具有比包层52更大的折射率，芯51允许具有预定波长的光至少在LP01模式和LP02模式下传播，并且在芯51中， 在LP02模式的强度变得比芯51的中心为零的位置处以更高的浓度掺杂刺激发射预定波长的光的有源元件。
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