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1. 发明授权

US5949934A Optical waveguide grating and production method therefor 失效
标题翻译：光波导光栅及其制作方法
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
IPC分类号： G02B6/124 , G02B6/34
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。

2. 发明授权

US5996375A Method of making an optical waveguide grating with two dissimilar irradiating steps 失效
标题翻译：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
IPC分类号： C03B37/10 , G02B5/18
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。

3. 发明授权

US5930437A Optical filter with planar optical waveguide having periodically varied distribution of refractive index and production process thereof 失效
$Optical filter with planar optical waveguide having periodically varied distribution of refractive index and production process thereof$
标题翻译：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
IPC分类号： G02B6/00 , G02B6/12 , G02B6/122 , G02B6/124 , G02B6/13 , G02B6/10
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。

4. 发明申请

US20050041923A1 Optical fiber grating, optical fiber grating manufacturing method, and optical fiber grating manufacturing apparatus 审中-公开
标题翻译：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
IPC分类号： G02B5/18 , C03B25/00 , G02B5/26 , G02B6/02 , G02B6/10 , G02B6/124 , G02B6/34
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。

5. 发明授权

US06819834B2 Optical fiber grating, optical fiber grating manufacturing method, and optical fiber grating manufacturing apparatus 失效
标题翻译：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：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。

6. 发明授权

US08340487B2 Rare earth-doped core optical fiber and manufacturing method thereof 有权
标题翻译：稀土掺核芯光纤及其制造方法
公开(公告)号：US08340487B2
公开(公告)日：2012-12-25
申请号：US12109612
申请日：2008-04-25
申请人： Masashi Ikeda , Naritoshi Yamada , Kuniharu Himeno , Michihiro Nakai , Tomoharu Kitabayashi
发明人： Masashi Ikeda , Naritoshi Yamada , Kuniharu Himeno , Michihiro Nakai , Tomoharu Kitabayashi
IPC分类号： G02B6/02 , G02B6/00
CPC分类号： H01S3/06716 , C03B37/01838 , C03B37/01853 , C03B2201/12 , C03B2201/31 , C03B2201/36 , C03B2203/23 , C03C13/045 , C03C13/046 , G02B6/03633 , G02B6/03638
摘要： A rare earth-doped core optical fiber of the present invention includes a core comprising a silica glass containing at least aluminum and ytterbium, and a clad provided around the core and comprising a silica glass having a lower refraction index than that of the core, wherein the core has an aluminum concentration of 2% by mass or more, and ytterbium is doped into the core at such a concentration that the absorption band which appears around a wavelength of 976 nm in the absorption band by ytterbium contained in the core shows a peak absorption coefficient of 800 dB/m or less.
摘要翻译：本发明的稀土掺杂的芯光纤包括包含至少含有铝和镱的二氧化硅玻璃的芯和在芯周围设置的包层，其包含比芯的折射率低的石英玻璃，其中芯的铝浓度为2质量％以上，并且以这样的浓度将镱掺杂到芯中，使得在芯中包含的镱的吸收带中出现的波长976nm附近的吸收带表现出峰吸收系数为800dB / m以下。

7. 发明申请

US20100276822A1 RARE EARTH-DOPED CORE OPTICAL FIBER AND MANUFACTURING METHOD THEREOF 审中-公开
标题翻译：稀土光纤光纤及其制造方法
公开(公告)号：US20100276822A1
公开(公告)日：2010-11-04
申请号：US12837109
申请日：2010-07-15
申请人： Masashi Ikeda , Naritoshi Yamada , Kuniharu Himeno , Michihiro Nakai , Tomoharu Kitabayashi
发明人： Masashi Ikeda , Naritoshi Yamada , Kuniharu Himeno , Michihiro Nakai , Tomoharu Kitabayashi
IPC分类号： B29D11/00
CPC分类号： H01S3/06716 , C03B37/01838 , C03B37/01853 , C03B2201/12 , C03B2201/31 , C03B2201/36 , C03B2203/23 , C03C13/045 , C03C13/046 , G02B6/03633 , G02B6/03638
摘要： A rare earth-doped core optical fiber of the present invention includes a core comprising a silica glass containing at least aluminum and ytterbium, and a clad provided around the core and comprising a silica glass having a lower refraction index than that of the core, wherein the core has an aluminum concentration of 2% by mass or more, and ytterbium is doped into the core at such a concentration that the absorption band which appears around a wavelength of 976 nm in the absorption band by ytterbium contained in the core shows a peak absorption coefficient of 800 dB/m or less.
摘要翻译：本发明的稀土掺杂的芯光纤包括包含至少含有铝和镱的二氧化硅玻璃的芯和在芯周围设置的包层，其包含比芯的折射率低的石英玻璃，其中芯的铝浓度为2质量％以上，并且以这样的浓度将镱掺杂到芯中，使得在芯中包含的镱的吸收带中出现的波长976nm附近的吸收带表现出峰吸收系数为800dB / m以下。

8. 发明授权

US07492993B2 Multi-port coupler, optical amplifier, and fiber laser 有权
标题翻译：多端口耦合器，光放大器和光纤激光器
公开(公告)号：US07492993B2
公开(公告)日：2009-02-17
申请号：US11755681
申请日：2007-05-30
申请人： Michihiro Nakai , Tetsuya Sakai
发明人： Michihiro Nakai , Tetsuya Sakai
IPC分类号： G02B6/26
CPC分类号： G02B6/2835 , H01S3/06729 , H01S3/094007 , H01S3/094015 , H01S3/094053 , H01S3/09415
摘要： A multi-port coupler for coupling an pumping light source to a cladding pump fiber for optical amplification, includes a central signal fiber and a plurality of pumping fibers arranged around the central signal fiber, the central signal fiber and the plurality of pumping fibers being unified and a front side is reduced in diameter, wherein an emitted light confining waveguide part is provided around a core of the signal fiber located at the center, and the emitted light confining waveguide part whose outer diameter is larger than that of the core has a higher refractive index than a cladding and a lower refractive index than the core and the emitted light confining waveguide part is formed continuously from a splicing point of the cladding pump fiber to a coupler front end branched into multiple fibers.
摘要翻译：用于将泵浦光源耦合到用于光放大的包层泵浦光纤的多端口耦合器包括中心信号光纤和围绕中心信号光纤布置的多个泵浦光纤，中心信号光纤和多个泵浦光纤被统一并且前侧的直径减小，其中发射的光限制波导部分设置在位于中心的信号光纤的芯周围，并且外径大于芯的发射光限制波导部分具有较高的从包层泵浦纤维的拼接点到分支成多个纤维的耦合器前端连续地形成比包层折射率低且折射率低于芯部和发射的光限制波导部分的折射率。

9. 发明授权

US08004753B2 Optical amplifier, fiber laser, and method of eliminating reflected light 有权
标题翻译：光放大器，光纤激光器和消除反射光的方法
公开(公告)号：US08004753B2
公开(公告)日：2011-08-23
申请号：US12647046
申请日：2009-12-24
申请人： Michihiro Nakai , Tetsuya Sakai
发明人： Michihiro Nakai , Tetsuya Sakai
IPC分类号： H01S3/00
CPC分类号： H01S3/302
摘要： A MO-PA type optical amplifier is provided which includes an oscillator and an amplifier including a fiber for optical amplification, including: a reflected-light wavelength conversion fiber which is provided on an optical path between the oscillator and the amplifier and which converts a wavelength of reflected-light traveling toward the oscillator due to Stimulated Raman Scattering; and a filter which is provided on the optical path between the oscillator and the amplifier and which eliminates the wavelength-converted light.
摘要翻译：提供一种MO-PA型光放大器，其包括振荡器和包括用于光放大的光纤的放大器，包括：反射光波长转换光纤，其设置在振荡器和放大器之间的光路上，并且将波长由于受激喇曼散射而向振荡器传播的反射光; 以及设置在振荡器和放大器之间的光路上并且消除波长转换的光的滤波器。

10. 发明申请

US20100097689A1 OPTICAL AMPLIFIER, FIBER LASER, AND METHOD OF ELIMINATING REFLECTED LIGHT 有权
标题翻译：光放大器，光纤激光器和消除反射光的方法
公开(公告)号：US20100097689A1
公开(公告)日：2010-04-22
申请号：US12647046
申请日：2009-12-24
申请人： Michihiro Nakai , Tetsuya Sakai
发明人： Michihiro Nakai , Tetsuya Sakai
IPC分类号： H01S3/30 , H01S3/00
CPC分类号： H01S3/302
摘要： A MO-PA type optical amplifier is provided which includes an oscillator and an amplifier including a fiber for optical amplification, including: a reflected-light wavelength conversion fiber which is provided on an optical path between the oscillator and the amplifier and which converts a wavelength of reflected-light traveling toward the oscillator due to Stimulated Raman Scattering; and a filter which is provided on the optical path between the oscillator and the amplifier and which eliminates the wavelength-converted light.
摘要翻译：提供一种MO-PA型光放大器，其包括振荡器和包括用于光放大的光纤的放大器，包括：反射光波长转换光纤，其设置在振荡器和放大器之间的光路上，并且将波长由于受激喇曼散射而向振荡器传播的反射光; 以及设置在振荡器和放大器之间的光路上并且消除波长转换的光的滤波器。

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