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    • 32. 发明授权
    • High omnidirectional reflector
    • 高全向反射器
    • US06903873B1
    • 2005-06-07
    • US09634099
    • 2000-08-08
    • John D. JoannopoulosShanhui FanJoshua N. WinnYoel Fink
    • John D. JoannopoulosShanhui FanJoshua N. WinnYoel Fink
    • G02B5/08G02B5/28G02B5/30G02B6/12G02B6/122G02B27/00
    • G02B27/0012B82Y20/00G02B5/0825G02B6/122G02B6/1225G02B2006/12104
    • A reflector, a method of producing same and a method of creating high omnidirectional reflection for a predetermined range of frequencies of incident electromagnetic energy for any angle of incidence and any polarization. The reflector includes a structure with a surface and a refractive index variation along the direction perpendicular to the surface while remaining nearly uniform along the surface. The structure is configured such that i) a range of frequencies exists defining a photonic band gap for electromagnetic energy incident along the perpendicular direction of said surface, ii) a range of frequencies exists defining a photonic band gap for electromagnetic energy incident along a direction approximately 90° from the perpendicular direction of said surface, and iii) a range of frequencies exists which is common to both of said photonic band gaps. In an exemplary embodiment, the reflector is configured as a photonic crystal.
    • 反射器,其制造方法以及用于针对任何入射角和任何极化的入射电磁能的预定频率范围产生高全向反射的方法。 反射器包括具有沿着垂直于表面的方向的表面和折射率变化的结构,同时沿表面保持几乎均匀的结构。 该结构被配置为使得i)存在一定范围的频率,其限定沿着所述表面的垂直方向入射的电磁能的光子带隙,ii)存在限定沿着近似方向入射的电磁能的光子带隙的频率范围 与所述表面的垂直方向成90°,以及iii)存在对所述光子带隙两者共同的频率范围。 在示例性实施例中,反射器被配置为光子晶体。
    • 33. 发明授权
    • Omnidirectional multilayer device for enhanced optical waveguiding
    • 用于增强光波导的全向多层器件
    • US06463200B2
    • 2002-10-08
    • US09418344
    • 1999-10-14
    • Yoel FinkShanhui FanEdwin ThomasChiping ChenJohn Joannopoulos
    • Yoel FinkShanhui FanEdwin ThomasChiping ChenJohn Joannopoulos
    • G02B616
    • G02B6/02304G02B6/102
    • A device having at least one dielectric inner core region in which electromagnetic radiation is confined, and at least two dielectric outer regions surrounding the inner core region, each with a distinct refractive index. The outer regions confine electromagnetic radiation within the inner core region. The refractive indices, the number of outer regions, and thickness of the outer regions result in a reflectivity for a planar geometry that is greater than 95% for angles of incidence ranging from 0° to at least 80° for all polarizations for a range of wavelengths of the electromagnetic radiation. In exemplary embodiments, the inner core region is made of a low dielectric material, and the outer regions include alternating layers of low and high dielectric materials. In one aspect of the invention, the device is a waveguide, and in another aspect the device is a microcavity.
    • 具有至少一个电介质内芯区域的装置,其中电磁辐射被限制在其中,并且至少两个围绕内芯区域的电介质外部区域各自具有不同的折射率。 外部区域将电磁辐射限制在内芯区域内。 折射率,外部区域的数量和外部区域的厚度导致平面几何的反射率,对于所有极化的范围为0°至至少80°的入射角,其平均几何形状的反射率大于95% 波长的电磁辐射。 在示例性实施例中,内芯区域由低电介质材料制成,并且外部区域包括低介电材料和高介电材料的交替层。 在本发明的一个方面,该器件是波导,并且在另一方面,该器件是微腔。
    • 34. 发明授权
    • High omnidirectional reflector
    • 高全向反射器
    • US6130780A
    • 2000-10-10
    • US253379
    • 1999-02-19
    • John D. JoannopoulosShanhui FanJoshua N. WinnYoel Fink
    • John D. JoannopoulosShanhui FanJoshua N. WinnYoel Fink
    • G02B5/08G02B5/28G02B5/30G02B6/12G02B6/122F21V9/04G02B1/10
    • G02B27/0012B82Y20/00G02B5/0825G02B6/122G02B6/1225G02B2006/12104
    • A reflector, a method of producing same and a method of creating high omnidirectional reflection for a predetermined range of frequencies of incident electromagnetic energy for any angle of incidence and any polarization. The reflector includes a structure with a surface and a refractive index variation along the direction perpendicular to the surface while remaining nearly uniform along the surface. The structure is configured such that i) a range of frequencies exists defining a photonic band gap for electromagnetic energy incident along the perpendicular direction of said surface, ii) a range of frequencies exists defining a photonic band gap for electromagnetic energy incident along a direction approximately 90.degree. from the perpendicular direction of said surface, and iii) a range of frequencies exists which is common to both of said photonic band gaps. In an exemplary embodiment, the reflector is configured as a photonic crystal.
    • 反射器,其制造方法以及用于针对任何入射角和任何极化的入射电磁能的预定频率范围产生高全向反射的方法。 反射器包括具有沿着垂直于表面的方向的表面和折射率变化的结构,同时沿表面保持几乎均匀的结构。 该结构被配置为使得i)存在一定范围的频率,其限定沿着所述表面的垂直方向入射的电磁能的光子带隙,ii)存在限定沿着近似方向入射的电磁能的光子带隙的频率范围 90°,并且iii)存在对于所述光子带隙两者共同的频率范围。 在示例性实施例中,反射器被配置为光子晶体。
    • 38. 发明申请
    • OPTICAL SENSOR HAVING A NON-NEGLIGIBLE SOURCE COHERENCE LENGTH
    • 具有不可忽略的源距离长度的光学传感器
    • US20120281225A1
    • 2012-11-08
    • US13493844
    • 2012-06-11
    • Michel J.F. DigonnetShanhui FanSeth Lloyd
    • Michel J.F. DigonnetShanhui FanSeth Lloyd
    • G01C19/72G01B9/02
    • G01C19/721
    • An optical sensor, a method of configuring an optical sensor, and a method of using an optical sensor are provided. The optical sensor includes an optical waveguide having a length and a laser source optically coupled to the waveguide. The laser source has a coherence length. Light from the source is transmitted to the waveguide as a first signal propagating along the waveguide in a first direction and a second signal propagating along the waveguide in a second direction opposite to the first direction. The optical paths of the first signal and the second signal are substantially reciprocal with one another and the first signal and the second signal are combined together after propagating through the waveguide to generate a third signal. The coherence length is greater than 1 meter or is in a range between 200 microns and 10 centimeters.
    • 提供光学传感器,配置光学传感器的方法以及使用光学传感器的方法。 光学传感器包括具有光学耦合到波导的长度的光波导和激光源。 激光源具有相干长度。 源自光源的光作为沿着波导沿第一方向传播的第一信号被传输到波导,第二信号沿着与第一方向相反的第二方向沿着波导传播。 第一信号和第二信号的光路基本上彼此相互倒数,并且在通过波导传播之后将第一信号和第二信号组合在一起以产生第三信号。 相干长度大于1米或处于200微米至10厘米之间的范围内。
    • 40. 发明申请
    • LASER-DRIVEN OPTICAL GYROSCOPE HAVING A NON-NEGLIGIBLE SOURCE COHERENCE LENGTH
    • 激光驱动的光学陀螺仪具有不可忽略的源距离长度
    • US20100302548A1
    • 2010-12-02
    • US12767643
    • 2010-04-26
    • Michel J.F. DigonnetShanhui FanSeth Lloyd
    • Michel J.F. DigonnetShanhui FanSeth Lloyd
    • G01C19/72G01B9/02
    • G01C19/721
    • A fiber-optic sensor, a method of configuring a fiber-optic sensor, and a method of using a fiber-optic sensor are provided. The fiber-optic sensor includes an optical fiber coil having a length and a laser source optically coupled to the coil. The laser source has a coherence length. Light from the source is transmitted to the coil as a first signal propagating along the coil in a first direction and a second signal propagating along the coil in a second direction opposite to the first direction. The optical paths of the first signal and the second signal are substantially reciprocal with one another and the first signal and the second signal are combined together after propagating through the coil to generate a third signal. The coherence length is greater than 1 meter or is in a range between 200 microns and 10 centimeters.
    • 提供了光纤传感器,配置光纤传感器的方法以及使用光纤传感器的方法。 光纤传感器包括具有光学耦合到线圈的长度的光纤线圈和激光源。 激光源具有相干长度。 来自源极的光作为沿着线圈沿第一方向传播的第一信号被传输到线圈,而第二信号沿着与第一方向相反的第二方向沿着线圈传播。 第一信号和第二信号的光路基本上彼此相互倒数,并且第一信号和第二信号在传播通过线圈之后组合在一起以产生第三信号。 相干长度大于1米或处于200微米至10厘米之间的范围内。