公开(公告)号：US20030031443A1

公开(公告)日：2003-02-13

申请号：US10121930

申请日：2002-04-12

发明人： Marin Soljacic ,  Mihai Ibanescu ,  Torkel Engeness ,  Maksim Skorobogatiy ,  Steven G. Johnson ,  Ori Weisberg ,  Yoel Fink ,  Rokan U. Ahmad ,  Lori Pressman ,  Wesley A. King ,  Emilia Anderson ,  John D. Joannopoulos

IPC分类号： G02B006/20 ,  G02B006/16 ,  C03B037/023

CPC分类号： G02B6/021 ,  B29D11/00721 ,  C03B37/027 ,  C03B37/02718 ,  C03B37/029 ,  C03B37/0756 ,  C03B2201/10 ,  C03B2201/28 ,  C03B2201/30 ,  C03B2201/32 ,  C03B2201/34 ,  C03B2201/50 ,  C03B2201/54 ,  C03B2201/60 ,  C03B2201/82 ,  C03B2201/86 ,  C03B2203/14 ,  C03B2203/16 ,  C03B2203/18 ,  C03B2203/223 ,  C03B2203/225 ,  C03B2203/42 ,  C03B2205/08 ,  C03B2205/09 ,  C03B2205/10 ,  C03B2205/40 ,  C03B2205/72 ,  C03C3/064 ,  C03C3/07 ,  C03C3/072 ,  C03C3/102 ,  C03C3/122 ,  C03C3/142 ,  C03C3/16 ,  C03C3/321 ,  C03C3/326 ,  C03C13/008 ,  C03C13/041 ,  C03C13/042 ,  C03C13/043 ,  C03C13/044 ,  C03C13/046 ,  C03C13/048 ,  C03C25/105 ,  C03C25/1061 ,  G02B6/02 ,  G02B6/02052 ,  G02B6/02066 ,  G02B6/02123 ,  G02B6/02261 ,  G02B6/023 ,  G02B6/02304 ,  G02B6/03694 ,  G02B6/126 ,  G02B6/29319 ,  G02B6/29356 ,  G02B6/30 ,  G02B6/305 ,  G02B6/42 ,  G02B6/4206 ,  G02B2006/12116 ,  G02B2006/12195 ,  G02F1/0115 ,  G02F1/365 ,  H01S3/06729

摘要： High index-contrast fiber waveguides, materials for forming high index-contrast fiber waveguides, and applications of high index-contrast fiber waveguides are disclosed.

公开(公告)号：US20020118923A1

公开(公告)日：2002-08-29

申请号：US10096616

申请日：2002-03-07

发明人： Tairan Wang ,  Pierre Villeneuve

IPC分类号： G02B006/26

CPC分类号： G02B6/29383 ,  B82Y20/00 ,  G02B6/12007 ,  G02B6/1225 ,  G02B6/29319 ,  G02B6/29322 ,  G02B6/29323 ,  G02B6/29337 ,  G02B6/29353 ,  G02B6/29356 ,  G02B6/29395 ,  G02F1/011 ,  G02F1/3132 ,  G02F2203/585 ,  H04J14/0204 ,  H04J14/0205 ,  H04J14/0206 ,  H04J14/0209 ,  H04J14/021 ,  H04J14/0213

摘要： An electromagnetic field frequency filter which includes a bus waveguide that carries a signal having a plurality of frequencies, including a desired frequency, and a drop waveguide. A resonator-system is coupled to the bus and drop waveguides via directional couplers and transfers the desired frequency from the bus waveguide to the drop waveguide while allowing transmission of the remaining frequencies in the bus waveguide. The input signal in the bus waveguide is coupled from the bus waveguide to the resonator-system by a first directional coupler. The resonator-system includes two sub-elements each comprising at least one resonator. The first directional coupler splits the input signal into two preferably equal parts and directs each part into a resonator sub-element. The desired frequency is transferred to the drop waveguide by a second directional coupler. The non-desired frequencies are returned to the bus waveguide, in the forward direction, by the first directional coupler.

摘要翻译： 一种电磁场频率滤波器，其包括承载具有包括期望频率的多个频率的信号的总线波导和下降波导。 谐振器系统通过定向耦合器耦合到总线和放大波导，并将期望的频率从总线波导传送到液滴波导，同时允许在总线波导中传输剩余的频率。 总线波导中的输入信号通过第一定向耦合器从总线波导耦合到谐振器系统。 谐振器系统包括两个子元件，每个子元件包括至少一个谐振器。 第一定向耦合器将输入信号分成两个优选相等的部分，并将每个部分引导到谐振器子元件中。 期望的频率通过第二定向耦合器传送到液滴波导。 非期望的频率通过第一定向耦合器在正向方向上返回到总线波导。

公开(公告)号：US06246511B1

公开(公告)日：2001-06-12

申请号：US09372973

申请日：1999-08-12

申请人： Ralph S. Jameson

发明人： Ralph S. Jameson

IPC分类号： H01S330

CPC分类号： H01S3/06754 ,  G02B6/29317 ,  G02B6/29356 ,  H01S3/10015 ,  H01S3/10023 ,  H01S3/1055

摘要： A system is provided for partially or completely offsetting optical fiber amplifier gain spectrum variations due to temperature by setting the optical pump signal leading into the amplifier to a desired wavelength value. Optical fiber amplifiers have gain spectrum variations associated with temperature and gain spectrum variations associated with the optical pump signal wavelength. By controlling the optical pump signal wavelength supplying the amplifier, the optical fiber amplifier gain variations due to temperature can be partially or completely offset, which helps minimize total amplifier spectral gain variations. The invention is applicable to dense wavelength division multiplexing (DWDM) systems.

摘要翻译： 提供一种系统，用于通过将通向放大器的光泵浦信号设置为期望的波长值来部分或完全抵消由于温度导致的光纤放大器增益谱变化。 光纤放大器具有与光泵​​浦信号波长相关的温度和增益谱变化相关的增益谱变化。 通过控制提供放大器的光泵浦信号波长，由于温度导致的光纤放大器增益变化可以部分或完全抵消，这有助于最小化总放大器频谱增益变化。 本发明适用于密集波分复用（DWDM）系统。

公开(公告)号：US5615289A

公开(公告)日：1997-03-25

申请号：US568650

申请日：1995-12-07

申请人： Gary S. Duck ,  David H. Cushing ,  Stephen J. Mihailov

发明人： Gary S. Duck ,  David H. Cushing ,  Stephen J. Mihailov

IPC分类号： G02B27/46 ,  G02B6/12 ,  G02B6/34 ,  G02B6/28

CPC分类号： G02B6/29356 ,  G02B6/02052 ,  G02B2006/12107 ,  G02B2006/12109

摘要： A bandpass optical filter is provided that is formed within an optical fiber in the form of a Bragg grating. The grating includes multiple Fabry Perot cavities disposed along the waveguide. Each of the cavities includes a pair of reflectors. Each reflector comprises alternating high-low index regions within the waveguide, each region having a thickness of one quarter-wave at a bandpass wavelength, each alternate region being of a different index of refraction than an adjacent region. A multiple odd quarter-wave or quarter-wave high or low index region is sandwiched between each pair of reflectors. The number of high/low regions within a reflector is selected in accordance with the refractive index difference between two alternate adjacent regions.

摘要翻译： 提供一种形成在布拉格光栅形式的光纤内的带通滤光器。 光栅包括沿着波导设置的多个Fabry P + E，acu e + EE r + E，cir o + EE t空腔。 每个空腔包括一对反射器。 每个反射器包括波导内的交替的高 - 低折射率区域，每个区域在带通波长处具有四分之一波长的厚度，每个替代区域具有与相邻区域不同的折射率。 多个奇数四分之一波或四分之一波高或低折射率区域夹在每对反射器之间。 根据两个交替相邻区域之间的折射率差来选择反射器内的高/低区域的数量。

公开(公告)号：US4950883A

公开(公告)日：1990-08-21

申请号：US289864

申请日：1988-12-27

申请人： William H. Glenn

发明人： William H. Glenn

IPC分类号： G01D5/353 ,  G02B6/34

CPC分类号： G01D5/35383 ,  G02B6/29319 ,  G02B6/29356

摘要： An arrangement for sensing changes in a monitored parameter includes an optical fiber which has at least one sensing fiber length including a sensing portion situated at a monitoring location of a body. Two periodic gratings of the same periodicity are situated in the fiber each at a different end of the sensing fiber length. Such gratings are reflective to a predominant portion of any light that propagates in the fiber and has a wavelength in a stopband range around twice the periodicity. When broadband coherent light including sensing light with wavelengths within the stopband range is launched into a first end of the optical fiber for propagation longitudinally of the fiber toward a first of the gratings, the predominant portion of the sensing light is reflected from the first grating and the remainder of the sensing light passes into the sensing fiber length, where resonant buildup of light at certain wavelengths that are located within the stopband range and depend on the length of the sensing portion as influenced by changes in the monitored parameter takes place, and the gratings are rendered substantially transparent to the sensing light at the plurality of wavelengths following the buildup. The effect of the gratings and of the sensing length on the wavelengths of the light emerging from one of the end portions of the optical fiber is then detected.

摘要翻译： 用于感测被监测参数中的变化的装置包括具有至少一个感测纤维长度的光纤，该光纤长度包括位于身体的监视位置处的感测部分。 具有相同周期性的两个周期性光栅位于光纤中，分别位于感测光纤长度的不同端。 这种光栅对于在光纤中传播并具有大约两倍周期的阻带范围的波长的任何光的主要部分是反射的。 当包括在阻带范围内的波长的感测光的宽带相干光被发射到光纤的第一端，用于沿光纤纵向朝向第一光栅传播时，感测光的主要部分从第一光栅反射，并且 感测光的其余部分进入感测光纤长度，其中发生在位于阻带范围内的某些波长处的光的共振积聚并且受到受监视参数的变化影响的感测部分的长度的影响，并且 随着积聚，光栅对于感测光呈现基本上透明的多个波长。 然后检测光栅和感测长度对从光纤端部之一出射的光的波长的影响。

公开(公告)号：US4900116A

公开(公告)日：1990-02-13

申请号：US292398

申请日：1988-12-30

申请人： Ronald F. Mathis

发明人： Ronald F. Mathis

IPC分类号： G02B6/34

CPC分类号： G02B6/29389 ,  G02B6/29356

摘要： A multiple pole optical bandpass filter comprises at least two input filter elements each having an input at one end and an output at the opposite end, and an output filter element having at least two inputs at one end coupled to the respective outputs of the input filter elements, and an output at the opposite end. Each of the filter elements comprises a segment of multimode optical fiber of predetermined length having mirrors at its opposite input and output ends. An intensity modulated light signal is provided at one of the input filter element inputs, while the same signal shifted by 180 degrees is provided at the other input filter element input.

摘要翻译： 多极光带通滤波器包括至少两个输入滤波器元件，每个至少两个输入滤波器元件在一端具有一个输入端，另一端具有一个输出端，以及一个输出滤波器元件，其一端至少有两个输入耦合到输入滤波器 元素和相对端的输出。 每个滤波器元件包括具有预定长度的多模光纤段，在其相对的输入和输出端具有反射镜。 在一个输入滤波器元件输入处提供强度调制光信号，而在另一输入滤波器元件输入处提供偏移180度的相同信号。

公开(公告)号：US4577924A

公开(公告)日：1986-03-25

申请号：US688271

申请日：1985-01-02

申请人： Ronald F. Mathis

发明人： Ronald F. Mathis

IPC分类号： G02B6/28 ,  G02B6/34 ,  G02B6/26 ,  G02B6/42

CPC分类号： G02B6/29356 ,  G02B6/2852 ,  G02B6/29335

摘要： An optical RF bandpass filter employing a noncoherent optical carrier. The filter consists of a section of multimode optical fiber having a length equal to half the modulation wavelength with mirrors deposited at each end of the fiber. The fiber section functions as a resonant cavity for the intensity modulated light which is directed into the fiber and which exits at one end through one of the partially reflecting mirrors.

摘要翻译： 采用非相干光载波的光学RF带通滤波器。 滤波器由一段多模光纤组成，其长度等于调制波长的一半，其中沉积在光纤每端的反射镜。 光纤部分用作用于强度调制光的谐振腔，其被引导到光纤中，并且其一端通过部分反射镜之一离开。

公开(公告)号：US20180135971A1

公开(公告)日：2018-05-17

申请号：US15573301

申请日：2016-05-12

申请人： THE BOARD OF REGENTS OF THE UNIVERSITY OF NEBERASKA

发明人： Ming Han

IPC分类号： G01B11/16 ,  G01J3/18 ,  G01J3/02 ,  G01J3/26 ,  G01D5/353

CPC分类号： G01B11/161 ,  G01D5/35335 ,  G01J3/0218 ,  G01J3/18 ,  G01J3/26 ,  G02B6/02085 ,  G02B6/29356 ,  G02B6/2938 ,  G02B6/4298

摘要： An in-line fiber-optic sensing element, a system, and methods for detecting strain using a fiber optic sensor are described that include using at least two chirped grating structures. In an implementation, an in-line fiber-optic sensing element that employs example techniques in accordance with the present disclosure includes an optically transmissive fiber including a core and an outer layer; a Fabry-Perot cavity defined by a portion of the optically transmissive fiber and two chirped fiber-Bragg grating structures, where the two chirped grating structures are separated and are configured to reflect light.

公开(公告)号：US20170059777A1

公开(公告)日：2017-03-02

申请号：US15249608

申请日：2016-08-29

申请人： SAMSUNG ELECTRONICS CO., LTD. ,  CALIFORNIA INSTITUTE OF TECHNOLOGY

发明人： Seunghoon HAN ,  Yu HORIE ,  Andrei FARAON ,  Amir ARBABI

IPC分类号： G02B6/293 ,  G01J3/18 ,  G02B5/18

CPC分类号： G02B6/29356 ,  G01J3/18 ,  G01J3/1895 ,  G01J3/26 ,  G01J2003/2826 ,  G02B5/1809 ,  G02B5/201 ,  G02B5/281 ,  G02B5/288 ,  G02B6/29325

摘要： An on-chip optical filter having Fabri-Perot resonators and a spectrometer may include a first sub-wavelength grating (SWG) reflecting layer and a second SWG reflecting layer facing each other. A plurality of Fabri-Perot resonators are formed by the first SWG reflecting layer and the second SWG reflecting layer facing each other. Each of the Fabri-Perot resonators may transmit light corresponding to a resonance wavelength of the Fabri-Perot resonator. The resonance wavelengths of the Fabri-Perot resonators may be determined according to duty cycles of grating patterns.

摘要翻译： 具有Fabri-Perot谐振器和光谱仪的片上滤光器可以包括第一子波长光栅（SWG）反射层和面向彼此的第二SWG反射层。 多个Fabri-Perot谐振器由第一SWG反射层和第二SWG反射层彼此面对形成。 Fabri-Perot谐振器中的每一个可以发射对应于Fabri-Perot谐振器的谐振波长的光。 可以根据光栅图案的占空比来确定Fabri-Perot谐振器的谐振波长。

公开(公告)号：US20160153113A1

公开(公告)日：2016-06-02

申请号：US14929015

申请日：2015-10-30

申请人： Yale University

发明人： Yu Zhang ,  Qian Sun ,  Jung Han

IPC分类号： C25F3/12 ,  C25B1/04 ,  G02B6/293 ,  G02B5/18 ,  H01L21/02 ,  C30B23/02 ,  H01L21/306 ,  H01L33/00 ,  H01L33/32 ,  C30B33/10 ,  C30B29/40 ,  C30B25/18 ,  C25B1/00 ,  H01L21/326

CPC分类号： C25F3/12 ,  C25B1/003 ,  C25B1/04 ,  C30B23/025 ,  C30B25/186 ,  C30B29/406 ,  C30B33/10 ,  G02B1/02 ,  G02B1/118 ,  G02B5/1861 ,  G02B6/29356 ,  G02B6/29358 ,  G02B2207/107 ,  H01L21/02002 ,  H01L21/02005 ,  H01L21/0237 ,  H01L21/02458 ,  H01L21/02513 ,  H01L21/0254 ,  H01L21/0262 ,  H01L21/02631 ,  H01L21/02658 ,  H01L21/306 ,  H01L21/30612 ,  H01L21/30625 ,  H01L21/30635 ,  H01L21/326 ,  H01L21/7813 ,  H01L33/0025 ,  H01L33/0062 ,  H01L33/007 ,  H01L33/0075 ,  H01L33/0079 ,  H01L33/16 ,  H01L33/32 ,  Y02E60/366 ,  Y10T428/24997

摘要： This invention relates to methods of generating NP gallium nitride (GaN) across large areas (>1 cm2) with controlled pore diameters, pore density, and porosity. Also disclosed are methods of generating novel optoelectronic devices based on porous GaN. Additionally a layer transfer scheme to separate and create free-standing crystalline GaN thin layers is disclosed that enables a new device manufacturing paradigm involving substrate recycling. Other disclosed embodiments of this invention relate to fabrication of GaN based nanocrystals and the use of NP GaN electrodes for electrolysis, water splitting, or photosynthetic process applications.

摘要翻译： 本发明涉及跨越具有受控孔径，孔密度和孔隙率的大面积（> 1cm 2）生成NP氮化镓（GaN）的方法。 还公开了产生基于多孔GaN的新型光电子器件的方法。 此外，公开了分离和产生独立的结晶GaN薄层的层转移方案，其能够实现涉及衬底回收的新器件制造范例。 本发明的其它公开的实施例涉及GaN基纳米晶体的制造和用于电解，水分解或光合过程应用的NP GaN电极的使用。