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公开(公告)号：US09535211B2
公开(公告)日：2017-01-03
申请号：US13308789
申请日：2011-12-01
CPC分类号： G02B6/02009 , G02B6/02138 , G02B6/32 , G02B6/4208 , G02B2006/02161
摘要： In various embodiments, an optical fiber includes a core having a relatively large area selected so as to raise a threshold of stimulated Raman scattering or stimulated Brillouin scattering, or both, the core having a high aspect ratio elongated cross-section and having a first refractive index. The core is narrower in a fast-axis direction and wider in a slow-axis direction, such that the fiber is mechanically flexible in the fast-axis direction and is mechanically rigid in the slow-axis direction.
摘要翻译： 在各种实施例中，光纤包括具有选择相对较大面积的芯，以便提高受激拉曼散射或受激布里渊散射的阈值，或两者具有高纵横比细长横截面的芯并具有第一折射率 指数。 芯在快轴方向上较窄，在慢轴方向上较宽，使得光纤在快轴方向上机械地柔性并且在慢轴方向上机械地刚性。
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公开(公告)号：US08983259B2
公开(公告)日：2015-03-17
申请号：US13464370
申请日：2012-05-04
申请人： David A. Rockwell
发明人： David A. Rockwell
CPC分类号： G02B6/02042 , B23K26/0604 , G02B6/02009 , G02B6/024 , G02B6/4296
摘要： An optical fiber includes multiple cores and a cladding. At least one of the multiple cores forms an optical waveguide and has an elongated cross-section with a narrower dimension in a fast-axis direction and a wider dimension in a slow-axis direction. The cladding surrounds the multiple cores and has a refractive index that differs from at least one refractive index of the multiple cores. The multiple cores could be stacked such that a first of the multiple cores is located at least partially over a second of the multiple cores in the fast-axis direction. The optical fiber could include an additional core within the cladding and having a substantially circular cross-section. The cores could be used to transport a high-power laser beam, an illumination laser beam, and an alignment laser beam. The optical fiber could have a length of at least two meters.
摘要翻译： 光纤包括多个芯和一个包层。 多个芯中的至少一个形成光波导并且具有在快轴方向上具有较窄尺寸的细长横截面和在慢轴方向上的较宽尺寸。 包层包围多个芯，并且具有与多个芯的至少一个折射率不同的折射率。 多个芯可以被堆叠，使得多个芯中的第一个至少部分地位于多个芯的快速轴方向上的第二个上。 光纤可以在包层内包括一个附加的芯，并且具有基本圆形的横截面。 芯可用于传输大功率激光束，照明激光束和对准激光束。 光纤可以具有至少两米的长度。
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公开(公告)号：US08896910B2
公开(公告)日：2014-11-25
申请号：US13476652
申请日：2012-05-21
IPC分类号： G02F1/35
CPC分类号： H01S3/30 , H01S3/08027 , H01S3/08059 , H01S3/094026 , H01S3/094076 , H01S3/094084
摘要： According to an embodiment of the disclosure, a Raman generator includes a Raman medium and one or more optical elements. The Raman medium is configured to receive a pump pulse at a first wavelength and shift at least a portion of the pump pulse energy or power into a Stokes-shifted pulse at a second wavelength. The one or more optical elements are configured to synchronize one or more subsequent passages of the Stokes-shifted pulse through the Raman medium with one or more subsequent pump pulses at the first wavelength. The synchronized passage of the Stokes-shifted pulse and one or more subsequent pump pulses through the Raman medium increases a power of the Stoke-shifted pulse.
摘要翻译： 根据本公开的实施例，拉曼发生器包括拉曼介质和一个或多个光学元件。 所述拉曼介质被配置为接收第一波长的泵浦脉冲并将所述泵浦脉冲能量或功率的至少一部分移动到第二波长的斯托克斯脉冲。 所述一个或多个光学元件被配置为使经过拉曼介质的斯托克斯位移脉冲的一个或多个后续通道与第一波长的一个或多个后续泵浦脉冲同步。 斯托克斯移位脉冲和一个或多个后续泵浦脉冲通过拉曼介质的同步通过增加了斯托克斯脉冲的功率。
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公开(公告)号：US08643942B2
公开(公告)日：2014-02-04
申请号：US12915737
申请日：2010-10-29
CPC分类号： G02B6/02 , H01S3/06708 , H01S3/0672 , H01S3/08072 , H01S3/094003
摘要： In various embodiments, an optical element, e.g., an optical fiber, may be configured to compensate for thermal lensing. For example, thermal lensing may be caused by light power dissipation within an optical fiber, which may include a fiber core that guides amplified light along the longitudinal dimension of the fiber core. Thermal lensing from a thermally induced change in material refractive index as a function of position along dimensions perpendicular to the fiber's longitudinal dimension may be at least partially compensated or offset when light is guided by the fiber core by a designed-in effective refractive index profile selected such that the designed-in material refractive index of the fiber core changes as a function of transverse position within the fiber core, or by selection of a favorable cross-sectional core shape in a plane perpendicular to the longitudinal dimension of the fiber core.
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公开(公告)号：US08565272B2
公开(公告)日：2013-10-22
申请号：US13534410
申请日：2012-06-27
IPC分类号： H01S3/30
CPC分类号： H01S3/06704 , H01S3/06708 , H01S3/06729 , H01S3/094019
摘要： A planar laser gain medium and laser system. The novel laser gain medium includes an active core having a high aspect ratio cross-section with a fast-axis dimension and a slow-axis dimension, signal claddings adapted to form reflective boundaries at fast-axis boundaries of the core, and a material adapted to minimize reflections at slow-axis boundaries of the core. In an illustrative embodiment, the laser gain medium is an optical fiber. The core and claddings form a waveguide adapted to control modes propagating in the fast-axis direction. When the laser gain medium is employed as a laser oscillator, a high reflectivity mirror and an outcoupler are positioned at opposite ends of the core to form a laser resonator adapted to control modes in the slow-axis direction.
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公开(公告)号：US20130215912A1
公开(公告)日：2013-08-22
申请号：US13397987
申请日：2012-02-16
IPC分类号： H01S3/30
CPC分类号： H01S3/30 , F41H13/005 , F41H13/0056 , F41J2/02 , H01S3/07 , H01S3/08027 , H01S3/0815 , H01S3/082 , H01S3/094038 , H01S3/23
摘要： A system includes a laser configured to generate a pump beam at a pump wavelength. The system also includes a multi-media Raman resonator configured to receive the pump beam and generate an output beam. The multi-media Raman resonator includes multiple mirrors and multiple Raman media optically located between the minors. Output power in the output beam is spectrally concentrated around a single dominant wavelength that is longer than a pump wavelength. The longer wavelength of the output beam is associated with a combination of at least one Stokes shift associated with each of the individual Raman media. A filter could be configured to absorb light at a wavelength that is absorbed by one of the Raman media or to redirect light at the wavelength absorbed by one of the Raman media away from that Raman medium.
摘要翻译： 一种系统包括配置成产生泵浦波长的泵浦光束的激光器。 该系统还包括配置成接收泵浦光束并产生输出光束的多介质拉曼共振器。 多介质拉曼谐振器包括多个反射镜和光学地位于未成体之间的多个拉曼介质。 输出光束中的输出功率被光谱集中在比泵波长长的单个主波长上。 输出光束的较长波长与与每个单独拉曼介质相关联的至少一个斯托克斯波动的组合相关联。 滤光器可以被配置为吸收由拉曼介质之一吸收的波长的光，或者以从拉曼介质中的一个拉曼介质吸收的波长重定向光。
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7.发明授权Optical fiber coupler for coupling signal beams into a non-circularly shaped optical beam 有权用于将信号光束耦合到非圆形光束的光纤耦合器公开(公告)号：US08515220B1
公开(公告)日：2013-08-20
申请号：US13445404
申请日：2012-04-12
申请人： Victor Khitrov , David A. Rockwell
发明人： Victor Khitrov , David A. Rockwell
CPC分类号： G02B6/2848 , G02B6/02042 , G02B6/1245 , G02B6/14 , G02B6/2856 , G02B6/4296
摘要： An optical fiber coupler configured to couple signal beams into a non-circularly shaped output optical beam or device is provided. The coupler includes an adiabatically tapered optical device. The tapered optical device has a core taper ratio equal to the ratio between a second core diameter and a first core diameter and a mode taper ratio equal to the ratio between a second mode field diameter and a first mode field diameter. The mode taper ratio is greater than the core taper ratio. A spacing between adjacent cores at the output end is less than a spacing between adjacent cores at the input end by approximately the core taper ratio, thereby increasing brightness of a combined output optical signal relative to the combined brightness of the plurality of input optical fibers by approximately a factor equal to the ratio of the mode taper ratio to the core taper ratio.
摘要翻译： 提供了一种被配置为将信号束耦合到非圆形输出光束或装置中的光纤耦合器。 耦合器包括绝热锥形光学器件。 锥形光学装置的芯锥度比等于第二纤芯直径和第一纤芯直径之间的比率以及等于第二模场直径与第一模场直径之比的模锥度比。 模锥比大于芯锥比。 在输出端的相邻芯之间的间隔小于输入端的相邻芯之间的间距大致的芯锥度比，由此相对于多个输入光纤的组合亮度增加了组合输出光信号的亮度 大约等于模式锥度比与芯锥比的比率。
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8.发明申请公开(公告)号：US20100189401A1
公开(公告)日：2010-07-29
申请号：US12358983
申请日：2009-01-23
IPC分类号： G02B6/10
CPC分类号： H01S3/06708 , H01S3/06704 , H01S3/0672 , H01S3/06729 , H01S3/08045
摘要： In various embodiments, a semi-guiding optical fiber includes a core having a first refractive index and a high aspect ratio elongated cross-section along a slow axis direction. First and second signal claddings having a second refractive index sandwich the core. A third cladding having a third refractive index substantially surrounds at least side edges of the core. The first refractive index of the core, the third refractive index of the third cladding, and/or the second refractive index of the first and second signal claddings, are selected so as to maximize a differential loss between a lowest order mode propagating in the optical fiber and next order modes so as to discriminate in favor of the lowest order mode and against the next order modes. In another embodiment, a method for mode control in a semi-guiding medium includes controlling either the first refractive index of the core, the second refractive index of the first and second signal claddings, and/or the third refractive index of the third cladding, to maximize a differential loss between a lowest order mode propagating in the optical fiber and next order modes so as to discriminate in favor of the lowest order mode and against the next order modes.
摘要翻译： 在各种实施例中，半导向光纤包括沿着慢轴方向具有第一折射率和高纵横比细长横截面的芯。 具有第二折射率的第一和第二信号包层夹着芯。 具有第三折射率的第三包层基本上围绕芯的至少侧边缘。 选择芯的第一折射率，第三包层的第三折射率和/或第一和第二信号包层的第二折射率，以使在光学传播的最低阶模之间的差分损耗最大化 光纤和下一个订单模式，以便有利于最低阶模式和下一个订单模式。 在另一个实施例中，用于半导向介质中的模式控制的方法包括控制芯的第一折射率，第一和第二信号包层的第二折射率和/或第三包层的第三折射率， 以最大化在光纤中传播的最低阶模式与下一阶模式之间的差分损耗，以便有利于最低阶模式和下一阶模式。
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9.发明申请OPTICAL DEVICE AND METHOD OF CONTROLLING A REFRACTIVE INDEX PROFILE IN THE OPTICAL DEVICE 有权光学装置和控制光学装置中的折射率折射率剖面的方法公开(公告)号：US20100189137A1
公开(公告)日：2010-07-29
申请号：US12358608
申请日：2009-01-23
CPC分类号： H01S3/04 , H01S3/06704 , H01S3/06708 , H01S3/06716 , H01S3/0672 , H01S3/094003
摘要： An optical device includes an optical material comprising active dopant ions and absorber dopant ions spaced apart from the active dopant ions. The active dopant ions are provided to absorb a first radiation and convert a portion of the first radiation into sensible heat. A concentration profile of the absorber dopant ions is selected to absorb a second radiation different from the first radiation and optionally the first radiation in at least one direction of the optical material so as to control a refractive index profile in the at least one direction of the optical material. In another embodiment, a method of controlling a refractive index profile in an optical material includes exciting active dopant ions in the optical material with a first radiation, the active dopant ions converting at least a portion of the first radiation into sensible heat; and exciting absorber dopant ions in the optical material with a second radiation to control a refractive index profile in at least one direction of the optical material.
摘要翻译： 光学装置包括光学材料，其包括与活性掺杂剂离子间隔开的活性掺杂剂离子和吸收剂掺杂剂离子。 提供活性掺杂剂离子以吸收第一辐射并将第一辐射的一部分转换成显热。 选择吸收剂掺杂剂离子的浓度分布以吸收与光学材料的至少一个方向上的第一辐射和任选的第一辐射不同的第二辐射，以便控制光学材料的至少一个方向上的折射率分布 光学材料。 在另一个实施例中，控制光学材料中的折射率分布的方法包括用第一辐射激发光学材料中的活性掺杂剂离子，活性掺杂剂离子将第一辐射的至少一部分转化为显热; 和具有第二辐射的光学材料中激发的吸收剂掺杂剂离子，以控制光学材料的至少一个方向上的折射率分布。
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公开(公告)号：US06327063B1
公开(公告)日：2001-12-04
申请号：US09165811
申请日：1998-10-02
申请人： David A. Rockwell
发明人： David A. Rockwell
IPC分类号： H04B1000
CPC分类号： H04B10/118
摘要： A system and method for free space optical communication include at least one reconfigurable terminal (30) using dual-wavelength operation for isolation between transmitted and received signals in combination with polarization switching to separate and steer the transmitted and received signals to and from corresponding transmitters (40) and receivers (48). The polarization based switching provides wavelength independent beam steering to facilitate interchanging of wavelengths for transmitted and received signals. A controllable or passive polarization changer (56) such as a wave plate or polarization rotator allows the communication terminal (30) to be reconfigured without also requiring the repositioning and associated precision alignment of beam steering optics (54, 62, 66).
摘要翻译： 一种用于自由空间光通信的系统和方法包括至少一个可重配置终端（30），其使用双波长操作来隔离发射和接收的信号，并结合极化切换来分离和引导发送和接收的信号到对应的发射机（和 40）和接收器（48）。 基于偏振的开关提供波长独立的波束导向，以便于发射和接收信号的波长交换。 诸如波片或偏振旋转器的可控或无源的偏振变换器（56）允许通信终端（30）被重新配置，而不需要光束转向光学器件（54,62,66）的重新定位和相关联的精确对准。
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