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1. 发明授权

US09815731B1 Tapered core fiber manufacturing methods 有权
公开(公告)号：US09815731B1
公开(公告)日：2017-11-14
申请号：US15299327
申请日：2016-10-20
申请人： nLIGHT, Inc.
发明人： Joona Koponen , Laeticia Petit , Petteri Väinänen
IPC分类号： G02B6/02 , C03B37/023 , C03B37/025 , H01S3/067
CPC分类号： C03B37/0253 , C03B37/01228 , C03B37/0124 , C03B37/01245 , C03B37/02754 , C03B37/02763 , C03B2201/34 , C03B2201/36 , C03B2203/10 , C03B2203/18 , C03B2203/23 , C03B2205/08 , C03B2205/13 , C03B2205/44 , C03C25/68 , G02B6/02 , G02B6/02052 , G02B6/03622 , G02B6/14 , H01S3/06708 , H01S3/06745
摘要： Tapered core fibers are produced using tapered core rods that can be etched or ground so that a fiber cladding has a constant diameter. The tapered core can be an actively doped core, or a passive core. One or more sleeving tubes can be collapsed onto a tapered core rod and exterior portions of the collapsed sleeving tubes can be ground to provide a constant cladding diameter in a fiber drawn from the preform.

2. 发明申请

US20170214209A1 DOUBLE FIBER OPTIC MODE ADAPTER 有权
公开(公告)号：US20170214209A1
公开(公告)日：2017-07-27
申请号：US15191829
申请日：2016-06-24
申请人： Optical Engines, Inc.
发明人： Jason D. Tafoya , Daniel Scott Schulz , Donald L. Sipes, JR.
IPC分类号： H01S3/067 , H01S3/094
CPC分类号： H01S3/06745 , G02B6/02047 , G02B6/02295 , G02B6/262 , G02B6/264 , G02B2006/12195 , H01S3/06712 , H01S3/06733 , H01S3/06741 , H01S3/06783 , H01S3/094003 , H01S3/094053
摘要： An exemplary embodiment of the disclosure provides a double fiber optic mode adapter including: a fiber core having a variable core diameter; a fiber cladding having a variable cladding size; a first input interface corresponding to a first core diameter and a first cladding size; a second input interface corresponding to a second core diameter and a second cladding size; a thermally-tapered region wherein the variable core diameter of the fiber core transitions from the first core diameter to the second core diameter and the variable cladding size of the fiber cladding transitions from the first cladding size to a third cladding size; and an etched tapered region wherein the variable core diameter of the fiber core is constant and the variable cladding size of the fiber cladding transitions from the third cladding size to the second cladding size

3. 发明申请

US20160352063A1 MODE-LOCKED MULTI-MODE FIBER LASER PULSE SOURCE 审中-公开
公开(公告)号：US20160352063A1
公开(公告)日：2016-12-01
申请号：US15235239
申请日：2016-08-12
申请人： IMRA AMERICA, INC.
发明人： Martin E. Fermann
IPC分类号： H01S3/067 , H01S3/11 , H01S3/08 , H01S3/094
CPC分类号： H01S3/06708 , G02B6/26 , H01S3/0092 , H01S3/067 , H01S3/06704 , H01S3/06712 , H01S3/06716 , H01S3/06725 , H01S3/06729 , H01S3/06733 , H01S3/06737 , H01S3/06745 , H01S3/06783 , H01S3/08045 , H01S3/08054 , H01S3/094007 , H01S3/094019 , H01S3/094042 , H01S3/094069 , H01S3/1106 , H01S3/1109 , H01S3/1115 , H01S3/1118 , H01S3/1608 , H01S3/1618
摘要： A laser utilizes a cavity design which allows the stable generation of high peak power pulses from mode-locked multi-mode fiber lasers, greatly extending the peak power limits of conventional mode-locked single-mode fiber lasers. Mode-locking may be induced by insertion of a saturable absorber into the cavity and by inserting one or more mode-filters to ensure the oscillation of the fundamental mode in the multi-mode fiber. The probability of damage of the absorber may be minimized by the insertion of an additional semiconductor optical power limiter into the cavity.

4. 发明授权

US09425577B2 Optical fiber and laser oscillator using same 有权
标题翻译：光纤和激光振荡器使用相同
公开(公告)号：US09425577B2
公开(公告)日：2016-08-23
申请号：US14774135
申请日：2014-03-20
申请人： Mitsuboshi Diamond Industrial Co., LTD.
发明人： Christian Schaefer , Masanao Murakami
IPC分类号： H01S3/042 , H01S3/067 , H01S3/091 , H01S3/16 , H01S3/17 , H01S3/00 , H01S3/04
CPC分类号： H01S3/042 , H01S3/005 , H01S3/0071 , H01S3/0405 , H01S3/0407 , H01S3/06704 , H01S3/06708 , H01S3/06716 , H01S3/06745 , H01S3/06754 , H01S3/091 , H01S3/1608 , H01S3/173
摘要： An optical fiber includes a first optical fiber body, a second optical fiber body and a first end cap. The first optical fiber body includes a first core and a first cladding. The second optical fiber body includes a second core and a second cladding, and is joined at a first end surface thereof to a first end surface of the first optical fiber body. The first end cap has light permeability and is joined to a second end surface of the second optical fiber body. The first core is doped with a laser medium. A mass content of the laser medium in the second core is lower than that of the laser medium in the first core.
摘要翻译：光纤包括第一光纤体，第二光纤体和第一端盖。第一光纤体包括第一芯和第一包层。第二光纤体包括第二芯和第二包层，并且在其第一端面处连接到第一光纤体的第一端面。第一端盖具有透光性并且连接到第二光纤体的第二端面。第一芯掺杂有激光介质。第二芯中的激光介质的质量含量低于第一芯中的激光介质的质量含量。

5. 发明授权

US09293884B2 High power parallel fiber arrays 有权
公开(公告)号：US09293884B2
公开(公告)日：2016-03-22
申请号：US14672301
申请日：2015-03-30
申请人： IMRA AMERICA, INC.
发明人： Martin Fermann , Ingmar Hartl , Andrius Marcinkevicius , Liang Dong
IPC分类号： H01S3/067 , H01S3/13 , H01S3/094 , H01S3/00 , H01S3/08 , H01S3/23
CPC分类号： H01S3/06737 , G02B6/02042 , H01S3/0057 , H01S3/0085 , H01S3/06704 , H01S3/06712 , H01S3/06729 , H01S3/06741 , H01S3/06745 , H01S3/06754 , H01S3/08059 , H01S3/094007 , H01S3/094019 , H01S3/094053 , H01S3/094076 , H01S3/10084 , H01S3/1305 , H01S3/1307 , H01S3/2333 , H01S3/2383
摘要： High power parallel fiber arrays for the amplification of high peak power pulses are described. Fiber arrays based on individual fiber amplifiers as well as fiber arrays based on multi-core fibers can be implemented. The optical phase between the individual fiber amplifier elements of the fiber array is measured and controlled using a variety of phase detection and compensation techniques. High power fiber array amplifiers can be used for EUV and X-ray generation as well as pumping of parametric amplifiers.

6. 发明授权

US09285541B2 UV-green converting fiber laser using active tapers 有权
标题翻译： UV-green转换光纤激光器采用有源锥度
公开(公告)号：US09285541B2
公开(公告)日：2016-03-15
申请号：US13418255
申请日：2012-03-12
申请人： Matthieu Saracco , Jason N. Farmer , Scott H. Keeney , Timothy S. McComb
发明人： Matthieu Saracco , Jason N. Farmer , Scott H. Keeney , Timothy S. McComb
IPC分类号： G02B6/14 , H01S3/00 , H01S3/067 , H01S3/08 , H01S3/0941 , H01S3/16
CPC分类号： G02B6/14 , H01S3/0092 , H01S3/06745 , H01S3/06754 , H01S3/08045 , H01S3/09415 , H01S3/1618 , H01S2301/03
摘要： Nonlinear optical systems include fiber amplifiers using tapered waveguides such as optical fibers that permit multimode propagation but produce amplification and oscillation in a fundamental mode. The tapered waveguides generally are provided with an active dopant that is pumped with an optical pump source such as one or more semiconductor lasers. The active waveguide taper is selected to taper from a single or few mode section to a multimode section, and a seed beam in a fundamental mode is provided to a section of the waveguide taper associated with a smaller optical mode. An amplified beam exits the waveguide taper at a section associated with a larger optical mode. The amplified beam is directed to nonlinear conversion optics such as one or more nonlinear crystals to produce high peak power and high beam quality converted light using second or third harmonic generation, or other nonlinear processes.
摘要翻译：非线性光学系统包括使用诸如允许多模传播但在基模中产生放大和振荡的光纤的锥形波导的光纤放大器。锥形波导通常设置有用诸如一个或多个半导体激光器的光泵浦源泵浦的有源掺杂剂。有源波导锥度被选择为从单个或几个模式部分到多模部分逐渐变细，并且将基本模式的种子束提供给与较小光学模式相关联的波导锥度的一部分。放大的光束在与更大的光学模式相关联的部分处离开波导锥形。放大的光束被引导到诸如一个或多个非线性晶体的非线性转换光学器件，以产生使用二次或三次谐波产生或其它非线性处理的高峰值功率和高光束质量转换光。

7. 发明申请

US20160020573A1 CONNECTION STRUCTURE FOR MULTI-CORE FIBER AND OPTICAL-FIBER-BUNDLE STRUCTURE, CONNECTION STRUCTURE FOR MULTI-CORE FIBERS, METHOD FOR EXCITING RARE-EARTH-DOPED MULTI-CORE FIBERS, AND MULTI-CORE-OPTICAL-FIBER AMPLIFIER 审中-公开
标题翻译：用于多芯光纤和光纤布结构的连接结构，多芯光纤的连接结构，稀土多芯多芯光纤的方法和多芯光纤放大器
公开(公告)号：US20160020573A1
公开(公告)日：2016-01-21
申请号：US14834448
申请日：2015-08-25
申请人： FURUKAWA ELECTRIC CO., LTD.
发明人： Kengo WATANABE , Tsunetoshi SAITO , Yukihiro TSUCHIDA , Koichi MAEDA , Katsunori IMAMURA
IPC分类号： H01S3/067 , H01S3/094 , G02B6/40 , G02B6/255
CPC分类号： H01S3/094042 , G02B6/02042 , G02B6/2552 , G02B6/2856 , G02B6/40 , H01S3/06737 , H01S3/06745 , H01S3/06783 , H01S3/094003 , H01S3/1608
摘要： An optical-fiber-bundle structure is connected to one end of a multi-core fiber. The multi-core fiber has a tapered section formed therein. The outside diameter of the multi-core fiber and the core pitch thereof decrease in the tapered section. It is possible for the multi-core fiber to have an increasing core pitch on the connection-side thereof which connects to the optical-fiber-bundle structure; hence, it is possible to use an easy-to-use large-diameter optical fiber as the optical fiber to be provided in the optical-fiber-bundle structure. When connecting another multi-core fiber to the other end of the multi-core fiber, it is possible to match the outer diameters thereof; hence, when fusion splicing to one another, it is unlikely for a positional shift of the cores to occur.
摘要翻译：光纤束结构连接到多芯光纤的一端。多芯纤维在其中形成有锥形部。多芯纤维的外径和芯间距在锥形部分中减小。多芯光纤在与光纤束结构连接的连接侧上具有增加的芯间距，因此，可以使用易于使用的大直径光纤作为光纤束结构中设置的光纤。当将多芯纤维连接到多芯光纤的另一端时，可以匹配其多芯纤维的外径; 因此，当熔接彼此时，不可能使芯发生位置偏移。

8. 发明申请

US20160006208A1 MODE-LOCKED MULTI-MODE FIBER LASER PULSE SOURCE 审中-公开
公开(公告)号：US20160006208A1
公开(公告)日：2016-01-07
申请号：US14853135
申请日：2015-09-14
申请人： IMRA AMERICA, INC
发明人： Martin E. Fermann
IPC分类号： H01S3/11 , H01S3/16 , H01S3/094 , H01S3/067 , H01S3/08
CPC分类号： H01S3/06708 , G02B6/26 , H01S3/0092 , H01S3/067 , H01S3/06704 , H01S3/06712 , H01S3/06716 , H01S3/06725 , H01S3/06729 , H01S3/06733 , H01S3/06737 , H01S3/06745 , H01S3/06783 , H01S3/08045 , H01S3/08054 , H01S3/094007 , H01S3/094019 , H01S3/094042 , H01S3/094069 , H01S3/1106 , H01S3/1109 , H01S3/1115 , H01S3/1118 , H01S3/1608 , H01S3/1618
摘要： A laser utilizes a cavity design which allows the stable generation of high peak power pulses from mode-locked multi-mode fiber lasers, greatly extending the peak power limits of conventional mode-locked single-mode fiber lasers. Mode-locking may be induced by insertion of a saturable absorber into the cavity and by inserting one or more mode-filters to ensure the oscillation of the fundamental mode in the multi-mode fiber. The probability of damage of the absorber may be minimized by the insertion of an additional semiconductor optical power limiter into the cavity.

9. 发明授权

US09036667B2 High power single mode ytterbium fiber laser system with single mode neodymium fiber pump source 有权
标题翻译：大功率单模镱光纤激光系统采用单模钕光纤泵浦源
公开(公告)号：US09036667B2
公开(公告)日：2015-05-19
申请号：US13745190
申请日：2013-01-18
申请人： Valentin Gapontsev , Igor Samartsev
发明人： Valentin Gapontsev , Igor Samartsev
IPC分类号： H01S3/30 , H01S3/067 , G02B6/14 , H01S3/16 , H01S3/08 , H01S3/094
CPC分类号： H01S3/06708 , G02B6/14 , H01S3/06729 , H01S3/06745 , H01S3/06754 , H01S3/08045 , H01S3/094042 , H01S3/1611 , H01S3/1618 , H01S2301/03
摘要： A high power fiber laser system emitting a substantially diffraction limited beam with a Gaussian intensity profile includes a single mode (“SM”) neodymium fiber pump source outputting a SM pump light; a seed laser operative to emit a SM signal light at a wavelength greater than that of the pump light; a SM DWM receiving and multiplexing the SM pump and signal lights. The disclosed system further includes a booster fiber amplifier which is configured with a frustoconically-shaped ytterbium (“Yb”) doped core receiving the pump and signal lights and configured with a small diameter input end which supports only a SM and a large diameter output end which is capable of supporting the SM and high order modes (:HOM”). The booster further has a cladding surrounding and coextending with the core, the core being configured for having intensity profiles of respective SMs of pump and signal lights overlap one another so that an overlap integral substantially equals to one (1) along an entire length of the core. The SM of the light signal extracts substantially the entire energy from the pump mode leaving the HOMs without amplification necessary to affect a quality of the diffraction limited beam of the system in a MW peak power range and hundreds of watt average power range.
摘要翻译：发射具有高斯强度分布的基本衍射受限束的高功率光纤激光器系统包括输出SM泵浦光的单模（“SM”）钕光纤泵浦源; 种子激光器，其以大于泵浦光的波长发射SM信号光; SM DWM接收和复用SM泵和信号灯。所公开的系统还包括增强光纤放大器，其配置有接收泵和信号灯的截头圆锥形镱（“Yb”）掺杂芯，并配置有仅支持SM和大直径输出端的小直径输入端它能够支持SM和高阶模式（：HOM“）。助推器还具有围绕并与芯共同延伸的包层，该芯构造成使得泵和信号光的各个SM的强度分布彼此重叠，使得重叠积分基本上等于沿着整个长度的一（1）核心。光信号的SM从泵模式中提取基本上整个能量，留下HOM，而无需扩增，以在MW峰值功率范围和数百瓦特的平均功率范围内影响系统的衍射受限束的质量。

10. 发明授权

US08873916B2 Single mode propagation in fibers and rods with large leakage channels 有权
标题翻译：具有大泄漏通道的纤维和棒中的单模传播
公开(公告)号：US08873916B2
公开(公告)日：2014-10-28
申请号：US14054306
申请日：2013-10-15
申请人： IMRA America, Inc.
发明人： Liang Dong , William Wong , Martin E. Fermann
IPC分类号： G02B6/24 , H01S3/00 , H01S3/067 , G02B6/024 , G02B6/02 , H01S3/23 , G02B6/26 , H01S3/30 , G02B6/036 , G02B6/32 , H01S3/02 , H01S3/16
CPC分类号： G02B6/02357 , G02B6/00 , G02B6/02 , G02B6/02009 , G02B6/02033 , G02B6/02361 , G02B6/02366 , G02B6/02371 , G02B6/024 , G02B6/036 , G02B6/03633 , G02B6/03694 , G02B6/24 , G02B6/26 , G02B6/262 , G02B6/32 , G02F1/0134 , H01S3/0057 , H01S3/02 , H01S3/06708 , H01S3/06729 , H01S3/06745 , H01S3/06754 , H01S3/094007 , H01S3/1618 , H01S3/2308 , H01S3/302 , H01S2302/00
摘要： Various embodiments include large cores fibers that can propagate few modes or a single mode while introducing loss to higher order modes. Some of these fibers are holey fibers that comprising cladding features such as air-holes. Additional embodiments described herein include holey rods. The rods and fibers may be used in many optical systems including optical amplification systems, lasers, short pulse generators, Q-switched lasers, etc. and may be used for example for micromachining.
摘要翻译：各种实施例包括可以传播少数模式或单模的大芯纤维，同时将损耗引入高阶模式。这些纤维中的一些是包含诸如气孔的包层特征的多孔纤维。本文所述的另外的实施例包括多孔棒。棒和纤维可用于许多光学系统，包括光学放大系统，激光器，短脉冲发生器，Q开关激光器等，并且可以用于例如微加工。

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