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公开(公告)号：US10073191B2
公开(公告)日：2018-09-11
申请号：US14630080
申请日：2015-02-24
Applicant: Massachusetts Institute of Technology
Inventor： Yichen Shen , Dexin Ye , Ivan Celanovic , Steven G. Johnson , John D. Joannopoulos , Marin Soljacic
CPC classification number: G02B1/005 , G02B5/20 , G02B5/26 , G02B5/3066 , G02B5/3083 , G02F1/0131 , G02F1/0147
Abstract: A filter to transmit incident radiation at a predetermined incidence angle includes a plurality of photonic crystal structures disposed substantially along a surface normal direction of the filter. The photonic crystal structure includes a multilayer cell that comprises a first layer having a first dielectric permittivity, and a second layer having a second dielectric permittivity different from the first dielectric permittivity. The first layer and the second layer define a Brewster angle substantially equal to the predetermined incidence angle based on the first dielectric permittivity and the second permittivity. Each photonic crystal structure in the plurality of photonic crystal structures defines a respective bandgap, and the respective bandgaps of the plurality of photonic crystal structures, taken together, cover a continuous spectral region of about 50 nm to about 100 mm.
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2.发明申请公开(公告)号：US20150044463A1
公开(公告)日：2015-02-12
申请号：US14210359
申请日：2014-03-13
Applicant: University of Central Florida Research Foundation, , Massachusetts Institute of Technology
Inventor： Yoel Fink , Ayman F. Abouraddy , Silvija Gradecak , Benjamin Jean-Baptiste Grena , Alexander Gumennik , Xiaoting Jia , John D. Joannopoulos , Steven G. Johnson , Guillame R. Lestoquoy , Xiangdong Liang , Paul H. Rekemeyer , Matthew J. Smith , Alexander M. Stolyarov , Lei Wei
CPC classification number: B29B9/10 , B22F9/04 , B22F2009/045 , B29C55/005 , B29K2105/162 , B29K2995/0005 , B29K2995/0041 , B29L2009/00 , B29L2031/731 , C01B33/02 , C04B35/62849 , D01D5/34 , D01F9/08 , Y10T428/2927 , Y10T428/2933 , Y10T428/296 , Y10T428/2982 , Y10T428/2991
Abstract: A fiber is provided that has been thermally drawn from a fiber preform, having a longitudinal-axis length and including at least one core that has a longitudinal core axis parallel to the longitudinal axis and internally disposed to at least one outer fiber cladding material layer along the fiber length. The fiber is fed through a localized heating site having a heating site temperature, T, that is above a melting temperature of the fiber core, with a feed speed, υf, that melts a portion of the fiber core at the heating site, causing molten droplets to pinch off of fiber core material, one droplet at a time, with a time period of molten droplet formation set by the fiber feed speed, υf. The fiber is fed through the localized heating site to move the molten droplets out of the heating site and solidify the molten droplets into solid in-fiber particles.
Abstract translation: 提供了一种已经从纤维预成型件热拉伸的纤维，其具有纵轴长度并且包括至少一个具有纵向轴线平行于纵向轴线的芯部，并且内部设置在至少一个外部纤维包层材料层上 纤维长度。 纤维通过局部加热部位进料，该加热部位的加热部位温度T高于纤维芯的熔融温度，进料速度在熔融部分的纤维芯处熔化。 液滴夹住纤维芯材料，一次一滴，熔融液滴形成时间由纤维进料速度设定。 纤维通过局部加热部位进料，将熔融液滴移出加热部位，并将熔融液固化成固体纤维颗粒。
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公开(公告)号：US20160340224A1
公开(公告)日：2016-11-24
申请号：US15228279
申请日：2016-08-04
Applicant: Massachusetts Institute of Technology , University of Central Florida Research Foundation, Inc.
Inventor： Ayman F. Abouraddy , Esmaeil H. Banaei , Daosheng S. Deng , Yoel Fink , Steven G. Johnson , Joshua J. Kaufman , Xiangdong Liang , Soroush Shabahang , Guangming Tao
CPC classification number: C03C25/26 , B01J2/00 , B29B9/00 , B29B9/06 , B29B11/10 , B29C48/0022 , B29C48/05 , B29C48/156 , B29C48/16 , B29C48/92 , B29C2948/92704 , B29K2081/06 , C03B19/1005 , C03B37/15 , C03B2201/86 , C03C14/00 , C03C14/006 , C03C25/002 , C03C25/54 , D01D5/00 , D02G3/045 , D02G3/22 , D02J1/22 , D02J1/224 , Y10T428/2927
Abstract: There is provided a fiber including a cladding material that is disposed along a longitudinal-axis fiber length. A plurality of spherical particles are provided, separated from one another and disposed in a longitudinal line parallel to the longitudinal fiber axis. The particles are in a sequence with controlled periodic spacing between particles along at least a portion of the fiber length. Each spherical particle has a spherical particle material that is embedded within and elementally different than the fiber cladding material.
Abstract translation: 提供了包括沿纵轴纤维长度设置的包覆材料的纤维。 提供多个球形颗粒，它们彼此分离并且设置在与纵向纤维轴线平行的纵向线上。 颗粒沿着纤维长度的至少一部分处于颗粒之间具有受控的周期性间隔的序列。 每个球形颗粒具有嵌入在纤维包层材料中并与元素不同的球形颗粒材料。
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公开(公告)号：US20240385495A1
公开(公告)日：2024-11-21
申请号：US18288324
申请日：2022-04-25
Applicant: Massachusetts Institute of Technology
Inventor： Steven G. Johnson , Marin Soljacic , Charles Roques-Carmes , Yannick Salamin , Zin Lin
IPC: G02F1/35
Abstract: A system and method that may enable the generation of highly-efficient, high-power, narrow-linewidth, and tunable light sources from microwave frequencies to mid-infrared wavelengths is disclosed. The light source comprises a nonlinear medium coupled to a multi-modal cavity and a high-energy pump source. The nonlinear medium provides three-wave mixing between modes present in the cavity to generate, for example, terahertz waves. The broadband cavity enables cascading nonlinear processes. By engineering the Q-factors of the cavity's many modes, red-shifted (stokes) cascaded nonlinear processes strongly dominate over their blue-shifted (anti-stokes) counterparts, resulting in a quasi-complete depletion of the pump energy into the THz mode.
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Patent Agency Ranking
公开(公告)号：US09512036B2
公开(公告)日：2016-12-06
申请号：US13803213
申请日：2013-03-14
Applicant: Massachusetts Institute of Technology , University of Central Florida Research Foundation, Inc.
Inventor： Ayman F. Abouraddy , Esmaeil H. Banaei , Daosheng S. Deng , Yoel Fink , Steven G. Johnson , Joshua J. Kaufman , Xiangdong Liang , Soroush Shabahang , Guangming Tao
IPC: D02J1/22 , D01D5/00 , B01J2/00 , C03C25/26 , B29B9/00 , D02G3/22 , D02G3/04 , B29B9/06 , B29C47/04 , B29C47/92 , C03C25/00 , C03B37/15 , C03B19/10 , C03C14/00 , B29C47/00 , B29C47/02
CPC classification number: C03C25/26 , B01J2/00 , B29B9/00 , B29B9/06 , B29B11/10 , B29C47/0014 , B29C47/0066 , B29C47/027 , B29C47/04 , B29C47/92 , B29C2947/92704 , B29K2081/06 , C03B19/1005 , C03B37/15 , C03B2201/86 , C03C14/00 , C03C14/006 , C03C25/002 , C03C25/54 , D01D5/00 , D02G3/045 , D02G3/22 , D02J1/22 , D02J1/224 , Y10T428/2927
Abstract: A fiber is provided, including a cladding material that is disposed along a longitudinal-axis fiber length. A plurality of spherical particles are disposed as a sequence along a longitudinal line parallel to the longitudinal fiber axis in at least a portion of the fiber length, and include a spherical particle material that is interior to the fiber cladding material and different than the fiber cladding material. To produce particles, a drawn fiber, having a longitudinal-axis fiber length and including at least one fiber core that has a longitudinal core axis parallel to the longitudinal fiber axis and that is internally disposed to at least one outer fiber cladding layer along the fiber length, is heated for a time that is sufficient to cause a fiber core to break-up into droplets sequentially disposed along the fiber core axis. Fiber cooling solidifies droplets into spherical particles interior to fiber cladding.
Abstract translation: 提供了一种纤维，包括沿着纵轴纤维长度设置的包层材料。 多个球形颗粒在纤维长度的至少一部分中沿着与纵向纤维轴线平行的纵向排列为一个序列，并且包括在纤维包层材料内部并且不同于纤维包层的球形颗粒材料 材料。 为了产生具有纵轴纤维长度并且包括至少一个纤维芯的拉伸纤维，所述纤维芯具有纵向轴线平行于纵向纤维轴线并且沿着纤维内部设置在至少一个外部纤维包层上 加热足以使纤维芯分解成沿着纤维芯轴顺序设置的液滴的时间。 纤维冷却将液滴固化成纤维包层内部的球形颗粒。
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公开(公告)号：US20160060166A1
公开(公告)日：2016-03-03
申请号：US14414715
申请日：2013-06-20
Applicant: Massachusetts Institute of Technology , University of Central Florida Research Foundation, Inc.
Inventor： Ayman F. Abouraddy , Esmaeil H. Banaei , Daosheng S. Deng , Yoel Fink , Steven G. Johnson , Joshua J. Kaufman , Xiangdong Liang , Soroush Shabahang , Guangming Tao
CPC classification number: C03C25/26 , B01J2/00 , B29B9/00 , B29B9/06 , B29B11/10 , B29C48/0022 , B29C48/05 , B29C48/156 , B29C48/16 , B29C48/92 , B29C2948/92704 , B29K2081/06 , C03B19/1005 , C03B37/15 , C03B2201/86 , C03C14/00 , C03C14/006 , C03C25/002 , C03C25/54 , D01D5/00 , D02G3/045 , D02G3/22 , D02J1/22 , D02J1/224 , Y10T428/2927
Abstract: A fiber is provided, including a cladding material that is disposed along a longitudinal-axis fiber length. A plurality of spherical particles are disposed as a sequence along a longitudinal line parallel to the longitudinal fiber axis in at least a portion of the fiber length. Each spherical particle is of a spherical particle material that is interior to and different than the fiber cladding material. The spacing between adjacent spherical particles in the sequence of particles is greater than the spherical particle diameter. Each spherical particle can be provided as a core-shell particle that includes a spherical core that is surrounded by at least one spherical shell. Each spherical particle can be provided with a plurality of azimuthal sections of at least two distinct materials.
Abstract translation: 提供了一种纤维，包括沿着纵轴纤维长度设置的包层材料。 在纤维长度的至少一部分中，多个球形颗粒沿着与纵向纤维轴线平行的纵向排列为序列。 每个球形颗粒是在纤维包层材料内部和不同的球形颗粒材料。 颗粒序列中相邻球形颗粒之间的间距大于球形颗粒直径。 每个球形颗粒可以提供为核 - 壳颗粒，其包括由至少一个球壳包围的球形芯。 每个球形颗粒可以设置有至少两种不同材料的多个方位区段。
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公开(公告)号：US09031362B2
公开(公告)日：2015-05-12
申请号：US14309552
申请日：2014-06-19
Applicant: Cornell University , Massachusetts Institute of Technology
Inventor： Michal Lipson , Lucas Heitzmann Gabrielli , Steven G. Johnson , David Liu
Abstract: Techniques and devices are disclosed to provide controlled inter-mode cross-talk in multimode optical waveguides. The structure of a bent multimode optical waveguide can be designed or configured in a way that either substantially minimizes inter-mode cross talk or achieves a desired inter-mode cross-talk. Specific examples based on the disclosed waveguide designs are provided for semiconductor integrated waveguide devices.
Abstract translation: 公开了技术和装置，以在多模光波导中提供受控的模式间串扰。 弯曲多模光波导的结构可以以基本上最小化模式间串扰或实现期望的模式间串扰的方式来设计或配置。 提供了基于所公开的波导设计的具体实例用于半导体集成波导器件。
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公开(公告)号：US20140325827A1
公开(公告)日：2014-11-06
申请号：US14309552
申请日：2014-06-19
Applicant: Cornell University , Massachusetts Institute of Technology
Inventor： Michal Lipson , Lucas Heitzmann Gabrielli , Steven G. Johnson , David Liu
IPC: G02B6/10
Abstract: Techniques and devices are disclosed to provide controlled inter-mode cross-talk in multimode optical waveguides. The structure of a bent multimode optical waveguide can be designed or configured in a way that either substantially minimizes inter-mode cross talk or achieves a desired inter-mode cross-talk. Specific examples based on the disclosed waveguide designs are provided for semiconductor integrated waveguide devices.
Abstract translation: 公开了技术和装置，以在多模光波导中提供受控的模式间串扰。 弯曲多模光波导的结构可以以基本上最小化模式间串扰或实现期望的模式间串扰的方式来设计或配置。 提供了基于所公开的波导设计的具体实例用于半导体集成波导器件。
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公开(公告)号：US20130202888A1
公开(公告)日：2013-08-08
申请号：US13803213
申请日：2013-03-14
Applicant: Massachusetts Institute of Technology , University of Central Florida Research Foundation, Inc.
Inventor： Ayman F. Abouraddy , Esmaeil H. Banaei , Daosheng S. Deng , Yoel Fink , Steven G. Johnson , Joshua J. Kaufman , Xiangdong Liang , Soroush Shabahang , Guangming Tao
CPC classification number: C03C25/26 , B01J2/00 , B29B9/00 , B29B9/06 , B29B11/10 , B29C47/0014 , B29C47/0066 , B29C47/027 , B29C47/04 , B29C47/92 , B29C2947/92704 , B29K2081/06 , C03B19/1005 , C03B37/15 , C03B2201/86 , C03C14/00 , C03C14/006 , C03C25/002 , C03C25/54 , D01D5/00 , D02G3/045 , D02G3/22 , D02J1/22 , D02J1/224 , Y10T428/2927
Abstract: A fiber is provided, including a cladding material that is disposed along a longitudinal-axis fiber length. A plurality of spherical particles are disposed as a sequence along a longitudinal line parallel to the longitudinal fiber axis in at least a portion of the fiber length, and include a spherical particle material that is interior to the fiber cladding material and different than the fiber cladding material. To produce particles, a drawn fiber, having a longitudinal-axis fiber length and including at least one fiber core that has a longitudinal core axis parallel to the longitudinal fiber axis and that is internally disposed to at least one outer fiber cladding layer along the fiber length, is heated for a time that is sufficient to cause a fiber core to break-up into droplets sequentially disposed along the fiber core axis. Fiber cooling solidifies droplets into spherical particles interior to fiber cladding.
Abstract translation: 提供了一种纤维，包括沿着纵轴纤维长度设置的包层材料。 多个球形颗粒在纤维长度的至少一部分中沿着与纵向纤维轴线平行的纵向排列为一个序列，并且包括在纤维包层材料内部并且不同于纤维包层的球形颗粒材料 材料。 为了产生具有纵轴纤维长度并且包括至少一个纤维芯的拉伸纤维，所述纤维芯具有纵向轴线平行于纵向纤维轴线并且沿着纤维内部设置在至少一个外部纤维包层上 加热足以使纤维芯分解成沿着纤维芯轴顺序设置的液滴的时间。 纤维冷却将液滴固化成纤维包层内部的球形颗粒。
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