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公开(公告)号：US5966490A
公开(公告)日：1999-10-12
申请号：US823005
申请日：1997-03-21
CPC分类号： G02B6/02033 , G02B6/03633 , G02B6/4296 , G02B6/245
摘要： In a double-clad optical fiber comprising a core having an index of refraction n.sub.1, an inner cladding surrounding the core and having an index of refraction n.sub.2, and a first outer cladding surrounding the inner cladding and having an index of refraction n.sub.3 (wherein n.sub.1 >n.sub.2 >n.sub.3), the softness of the first outer cladding often renders it difficult to perform polishing or other mechanical operations on the end of the fiber. To reduce such difficulties it is advantageous to remove the first outer cladding from a limited end portion of the fiber, replacing it with a second outer cladding having an index of refraction n.sub.4 (wherein n.sub.2 >n.sub.4) and a hardness which is greater than that of the first outer cladding.
摘要翻译： 在包括具有折射率n1的芯的双包层光纤中，围绕芯并具有折射率n2的内包层和围绕内包层并具有折射率n3的第一外包层（其中n1 > n2> n3），第一外包层的柔软度常常使得难以对纤维的端部进行抛光或其它机械操作。 为了减少这种困难，有利的是从纤维的受限端部移除第一外包层，用具有折射率n4（其中n2> n4）的第二外包层和大于 第一个外包层。
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公开(公告)号：US20070206900A1
公开(公告)日：2007-09-06
申请号：US11746032
申请日：2007-05-08
申请人： Hong Po
发明人： Hong Po
CPC分类号： H01S3/067 , G02B6/02009 , G02B6/02314 , G02B6/03611 , G02B6/03633 , G02B6/2813 , H01S3/0672 , H01S3/06729
摘要： An optical waveguide can include a first region (12), a core (14) and a cladding (16). The core (14) surrounds the first region (12), and the cladding (16) surrounds the core (14). Typically, the core (14) includes an active material. In a further aspect, the invention features a system that includes two fibers (10, 48). One of the fibers has a first region, a first core (e.g., a multimode core) surrounding the first region, and a cladding surrounding the core. The other fiber has a core (e.g., a single mode core). The fibers can optically communicate so that energy can propagate from one of the cores to the other of the cores of the two fibers. Typically, at least one of the cores includes an active material.
摘要翻译： 光波导可以包括第一区域（12），芯部（14）和包层（16）。 芯（14）包围第一区域（12），并且包层（16）围绕芯部（14）。 通常，芯（14）包括活性材料。 在另一方面，本发明的特征在于包括两根纤维（10,48）的系统。 纤维之一具有围绕第一区域的第一区域，第一芯体（例如，多模核心）和围绕芯部的包层。 另一个光纤具有核心（例如，单模核心）。 纤维可以光学地通信，使得能量可以从两个纤维中的一个芯到另一个芯传播。 通常，至少一个芯包括活性材料。
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公开(公告)号：US6154598A
公开(公告)日：2000-11-28
申请号：US995445
申请日：1997-12-22
申请人： Pavle Gavrilovic , Anish K. Goyal , Hong Po , Shobha Singh
发明人： Pavle Gavrilovic , Anish K. Goyal , Hong Po , Shobha Singh
CPC分类号： H01S3/06716 , H01S3/094092 , H01S3/1603 , H01S3/1698
摘要： An optical waveguide laser, preferably a fiber laser, has unintentionally incorporated impurities disposed in the lasing medium which upconvert a portion of the lasing radiation to radiation of shorter wavelength, thereby introducing defects in the medium which result in increased absorption due to photodarkening. Suitable rare-earth co-dopants are intentionally incorporated during the manufacture of the fiber for effectively shunting the upconversion process. The lifetime of the fiber laser is thereby increased.
摘要翻译： 光波导激光器，优选光纤激光器，无意中并入设置在激光介质中的杂质，其将激光辐射的一部分上转换成较短波长的辐射，从而在介质中引入缺陷，导致由于光暗化而增加的吸收。 在制造纤维期间有意地掺入合适的稀土共掺杂剂，以有效地分流上转换过程。 光纤激光器的寿命由此增加。
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公开(公告)号：US07277610B2
公开(公告)日：2007-10-02
申请号：US10714524
申请日：2003-11-14
申请人： Andrey A. Demidov , Hong Po
发明人： Andrey A. Demidov , Hong Po
IPC分类号： G02B6/34
CPC分类号： H01S3/0675 , H01S3/06758 , H01S3/10023 , H01S3/302 , H04B10/2916
摘要： Optical fibers (e.g., fiber amplifiers and fiber lasers), and systems containing optical fibers (e.g., fiber amplifier systems and fiber laser systems) are disclosed.
摘要翻译： 公开了光纤（例如，光纤放大器和光纤激光器）和包含光纤的系统（例如光纤放大器系统和光纤激光器系统）。
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公开(公告)号：US20060291788A1
公开(公告)日：2006-12-28
申请号：US11179756
申请日：2005-07-12
申请人： Hong Po
发明人： Hong Po
IPC分类号： G02B6/02
CPC分类号： G02B6/03622 , G02B6/02 , G02B6/032 , G02B6/03638 , H01S3/06708 , H01S3/06729 , H01S3/094007 , H01S3/094042 , H01S3/094046
摘要： In one aspect, the invention relates to optical fibers and systems that include such fibers. In another aspect, the invention provides an optical fiber that includes a core, a cladding surrounding the core, a layer surrounding the cladding, and a region between the layer and the cladding. The region can comprise an index of refraction that is different than an index of refraction comprised by the cladding. In one embodiment, the region can include a void containing air or a liquid. The void can be evacuated. The region can include a solid, such as, for example, a polymer. The layer can contact the cladding. The fiber can comprise rare earth ions.
摘要翻译： 一方面，本发明涉及包括这种纤维的光纤和系统。 在另一方面，本发明提供了一种光纤，其包括芯，围绕芯的包层，围绕包层的层以及层与包层之间的区域。 该区域可以包括不同于包层所包括的折射率的折射率。 在一个实施方案中，该区域可以包括含有空气或液体的空隙。 空洞可以撤离。 该区域可以包括固体，例如聚合物。 该层可以接触包层。 纤维可以包含稀土离子。
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公开(公告)号：US06917742B2
公开(公告)日：2005-07-12
申请号：US10755749
申请日：2004-01-12
申请人： Hong Po
发明人： Hong Po
CPC分类号： G02B6/03622 , G02B6/02 , G02B6/032 , G02B6/03638 , H01S3/06708 , H01S3/06729 , H01S3/094007 , H01S3/094042 , H01S3/094046
摘要： In one aspect, the invention relates to optical fibers and systems that include such fibers. In another aspect, the invention provides an optical fiber that includes a core, a cladding surrounding the core, a layer surrounding the cladding, and a region between the layer and the cladding. The region can comprise an index of refraction that is different than an index of refraction comprised by the cladding. In one embodiment, the region can include a void containing air or a liquid. The void can be evacuated. The region can include a solid, such as, for example, a polymer. The layer can contact the cladding. The fiber can comprise rare earth ions.
摘要翻译： 一方面，本发明涉及包括这种纤维的光纤和系统。 在另一方面，本发明提供了一种光纤，其包括芯，围绕芯的包层，围绕包层的层以及层与包层之间的区域。 该区域可以包括不同于包层所包括的折射率的折射率。 在一个实施方案中，该区域可以包括含有空气或液体的空隙。 空洞可以撤离。 该区域可以包括固体，例如聚合物。 该层可以接触包层。 纤维可以包含稀土离子。
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公开(公告)号：US06205294B1
公开(公告)日：2001-03-20
申请号：US09191583
申请日：1998-11-13
申请人： Philip R. Norris , Hong Po
发明人： Philip R. Norris , Hong Po
IPC分类号： G03B1752
CPC分类号： G03B15/05 , G03B17/00 , G03B17/02 , G03B17/38 , G03B17/52 , G03B19/06 , G03B2215/0503 , G03B2219/045 , H04N1/00249 , H04N1/195
摘要： An imaging apparatus and method for use with a film assemblage strip of the self-developing type including an active matrix LCD for providing an area imaging means for exposing the film assemblage at an exposure station, wherein indexing the strip is accomplished by having indexing means of the strip selectively cooperate with pressure applying means, such that when one of the frames on the strip is processed the next successive film frame is simultaneously advanced to the exposure station to be exposed.
摘要翻译： 一种用于自显影类型的膜组合条的成像装置和方法，包括有源矩阵LCD，用于提供用于在曝光站曝光胶片组件的区域成像装置，其中通过具有索引装置 条带选择性地与压力施加装置配合，使得当条带中的一个框架被处理时，下一个连续的胶片框架同时前进到曝光站。
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公开(公告)号：US4922496A
公开(公告)日：1990-05-01
申请号：US134016
申请日：1987-12-17
申请人： Hong Po
发明人： Hong Po
CPC分类号： H01S3/067 , H01S3/109 , H01S3/1109 , H01S3/117 , H01S3/1603 , H01S3/1693
摘要： Apparatus for providing self-organized, phase-matched harmonic generated radiation which includes a single-mode fiber doped with ytterbium or ytterbium-aluminum which is placed in a laser cavity having a mode-locking and a Q-switching apparatus.
摘要翻译： 用于提供自组织的相位匹配谐波产生的辐射的装置，其包括掺杂有镱或镱铝的单模光纤，其放置在具有锁模和Q开关装置的激光腔中。
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公开(公告)号：US4815079A
公开(公告)日：1989-03-21
申请号：US134357
申请日：1987-12-17
申请人： Elias Snitzer , Hong Po , Richard P. Tumminelli , Farhad Hakimi
发明人： Elias Snitzer , Hong Po , Richard P. Tumminelli , Farhad Hakimi
CPC分类号： H01S3/06708 , H01S3/06729 , H01S3/094003 , H01S3/094007 , H01S3/094019 , H01S3/094069
摘要： Apparatus for coupling radiation into a single-mode core of an optical fiber laser has a single-mode core disposed within a relatively large, multimode cladding at a location which is displaced from the center of the cross-section of the cladding. The cladding is surrounded by a further layer to prevent radiation from propagating out of the cladding. In addition, the apparatus preferably has slight bends to enhance the coupling of radiation from the cladding into the single-mode core. A further embodiment has a single-mode fiber laser disposed in a relatively large, multimode, slab cladding which, in turn, is surrounded by another cladding to prevent radiation from propagating out of the large cladding.
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公开(公告)号：US20180239083A1
公开(公告)日：2018-08-23
申请号：US15751604
申请日：2016-08-12
申请人： Hong Po
发明人： Hong Po
CPC分类号： G02B6/0288 , H01S3/067 , H01S3/06716 , H01S3/094007 , H01S3/094011 , H01S3/094019 , H01S3/094053
摘要： An X-junction side coupler is formed by the attachment of a clad stripped special pump fiber to a section of the cladding pumped fiber with its outer cladding removed. The special formulated core of the pump fiber has a lower refractive index than the inner cladding of the cladding pumped fiber, and the resulting composite structure forms an anti-guide for the pump light. Due to the differential refractive index at the interface of the two guides leaky modes are generated to strip away the pump light efficiently and irreversibly from the pump guide to the cladding pumped fiber. An appropriate coupling length will ensure pump light injected in one end will not interfere with the source at the opposite end thus allowing bi-directional pumping in each coupling site. This new device invention facilitates the implementation of distributed pump architecture for cladding pumped fiber devices enabling very high power scaling with good thermal management control.
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