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公开(公告)号：US5751466A
公开(公告)日：1998-05-12
申请号：US584403
申请日：1996-01-11
申请人： Jonathan P. Dowling , Michael Scalora , Mark J. Bloemer , Charles M. Bowden , Rachel J. Flynn , Richard L. Fork , Senter B. Reinhardt, Jr. , Michael D. Tocci
发明人： Jonathan P. Dowling , Michael Scalora , Mark J. Bloemer , Charles M. Bowden , Rachel J. Flynn , Richard L. Fork , Senter B. Reinhardt, Jr. , Michael D. Tocci
CPC分类号： G02F1/3511 , B82Y20/00 , G02B6/1225 , G02B6/2861 , G02F2201/20
摘要： A photonic signal is applied to a photonic bandgap structure having a photonic band edge transmission resonance at the frequency of the photonic signal and having a photonic band edge transmission resonance bandwidth which is at least as wide as the bandwidth of the photonic signal. When a photonic band edge transmission resonance is matched to the photonic signal which is being transmitted, a controllable delay is imparted to the photonic signal without significantly altering the photonic signal itself.
摘要翻译： 光子信号被施加到在光子信号的频率处具有光子带边缘传输谐振的光子带隙结构，并且具有至少与光子信号的带宽一样宽的光子带边缘传输谐振带宽。 当光子带边缘传输谐振与正被传输的光子信号匹配时，对光子信号赋予可控延迟，而不会明显改变光子信号本身。
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2.发明授权Optical switch that utilizes one-dimensional, nonlinear, multilayer dielectric stacks 失效光开关利用一维，非线性，多层电介质叠层
公开(公告)号：US5740287A
公开(公告)日：1998-04-14
申请号：US568728
申请日：1995-12-07
CPC分类号： B82Y20/00 , G02B6/1225 , G02F1/35 , G02B2006/12145 , G02F1/3511
摘要： An optical switch in a one-dimensional multilayer dielectric stack having a photonic band gap, composed of at least two groups of layers of dielectric material whose operating wavelength is near the edge of said photonic band gap. At least one layer of each of the groups is composed of a nonlinear c.sub.3 dielectric material, which creates an intensity-dependent shift in the location of the band gap and produces a dynamical change in the transmissive and reflective properties of the multilayer dielectric stack in response to changes in the intensity of light or the transmittance of electromagnetic radiation passing through the multilayer dielectric stack. The width of the photonic band gap is determined by the differences between the refractive indices of the nonlinear dielectric material and that of the other layers of dielectric material in the multilayer dielectric stack.
摘要翻译： 一种具有光子带隙的一维多层电介质堆叠中的光开关，其由工作波长接近所述光子带隙边缘的至少两组介电材料构成。 每个组中的至少一个层由非线性c3电介质材料组成，其在带隙的位置上产生强度依赖性的偏移，并且响应地产生多层介质叠层的透射和反射特性的动态变化 以改变光的强度或通过多层介质叠层的电磁辐射的透射率。 光子带隙的宽度由非线性介电材料的折射率与多层介质叠层中其它介电材料层的折射率之差决定。
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公开(公告)号：US06392782B1
公开(公告)日：2002-05-21
申请号：US09606225
申请日：2000-06-27
申请人： Mark J. Bloemer , Michael Scalora , Jonathan P. Dowling , Charles M. Bowden , William C. Pittman
发明人： Mark J. Bloemer , Michael Scalora , Jonathan P. Dowling , Charles M. Bowden , William C. Pittman
IPC分类号： G02F103
CPC分类号： G01J3/36 , G01J3/02 , G01J3/0256 , G01J5/10 , G01J2003/1213 , G02B2006/1213
摘要： The photonic band gap (PBG) dual-spectrum sensor utilizes the frequency-selective properties of a photonic band gap device constructed in accordance with this invention to separate incident electromagnetic wave into two frequency bands. The parameters of the PBG device are chosen so that one frequency band is transmitted through the device with low attenuation while the second band is reflected with low attenuation from the front face of the device. This separation of the two frequency bands allows separate detection processes to be performed to recover the information content of the two signals before the information is fused in subsequent signal processing operation. Such a PBG device would be useful in missile seekers that seek to distinguish a target object from its background.
摘要翻译： 光子带隙（PBG）双光谱传感器利用根据本发明构造的光子带隙装置的频率选择性质将入射电磁波分离成两个频带。 选择PBG器件的参数，使得一个频带通过低衰减的器件传输，而第二个频带以来自器件前面的低衰减反射。 两个频带的这种分离允许执行单独的检测处理以在信息在随后的信号处理操作中融合之前恢复两个信号的信息内容。 这种PBG装置在寻求将目标物体与其背景区分开的导弹搜索者中将是有用的。
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公开(公告)号：US5559825A
公开(公告)日：1996-09-24
申请号：US431166
申请日：1995-04-25
CPC分类号： G02F1/3523 , B82Y20/00 , G02B6/1225 , H01S3/0064 , H01S5/105 , Y10S372/703
摘要： A new optical diode is disclosed that permits unidirectional transmission of light, the direction of transmission depending on the direction of incidence. The diode comprises a stack of alternating layers of a low-index material and a high-index material. The layers are arranged within the stack such that there is spatial anisotropy of optical pathlengths in the stack and at least the low-index layers or the high-index layers have an optical nonlinearity, either inherently or by doping. At sufficiently high incident intensifies and appropriate wavelengths, such a diode exhibits partial transmission of input light incident from one direction while reflecting almost totally input light incident from the opposite direction.
摘要翻译： 公开了一种新的光二极管，其允许光的单向传输，根据入射方向的透射方向。 二极管包括低折射率材料和高折射率材料的交替层叠。 这些层被布置在堆叠内，使得在堆叠中存在光路长度的空间各向异性，并且至少低折射率层或高折射率层具有固有地或通过掺杂的光学非线性。 在足够高的入射强度和适当的波长下，这种二极管表现出从一个方向入射的输入光的部分透射，同时反射从相反方向入射的几乎完全输入的光。
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公开(公告)号：US5268785A
公开(公告)日：1993-12-07
申请号：US14605
申请日：1993-02-08
摘要： Described here is an all-optical switch having two states, one that absorbsncident coherent optical radiation and another that amplifies incident coherent optical radiation. The state of switch is changed in response to the passage of an ultra-short coherent optical pulse when the peak field strength of the pulse is in a wide region about the effective dipole moment per unit volume, a characteristic material parameter proportional to the density and the dipole transition moment of the selected active two-level systems which are uniformly distributed with sufficient density so that there is more than one two-level system per cubic transition wavelength causing dipole-dipole interactions to be non-negligible.
摘要翻译： 这里描述了具有两种状态的全光开关，一种吸收入射的相干光辐射，另一种则放大入射的相干光辐射。 当脉冲的峰值场强在每单位体积的有效偶极矩周围的宽范围内时，开关的状态响应于超短相干光脉冲的通过而改变，特征材料参数与密度成比例， 所选择的活性二级体系的偶极跃迁时刻以足够的密度均匀分布，使得每立方转换波长存在多于一个二级系统，导致偶极 - 偶极相互作用不可忽略。
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6.发明授权Fast optical switch and limiter using quantum size effect in metal grain composites 失效在金属颗粒复合材料中使用量子尺寸效应的快速光学开关和限幅器
公开(公告)号：US5059003A
公开(公告)日：1991-10-22
申请号：US392866
申请日：1989-08-07
CPC分类号： H01S3/0064 , G02F1/3523
摘要： A block of composite material includes a dielectric material with a dielectric constant of .epsilon..sub.d =4.66 and which is at least 4 .mu.m thick and has electrically conductive microparticles randomly distributed throughout. The composite material exhibits an optical bistability without cavity feedback. The microparticles must be nearly uniform in size and of spherical diameter much smaller than the wavelength of light in the particle. The composite, when illuminated by laser light in the range of 500 nm and of varying intensity, becomes opaque at a critical input intensity and stays opaque until the input intensity reaches a certain level both below and above the intensity at which it initially became opaque. Thus the material behaves as an optical switch and a limiter.
摘要翻译： 复合材料块包括介电常数ε= 4.66并且至少为4μm厚的电介质材料，并且具有随机分布的导电性微粒。 复合材料表现出没有空腔反馈的光学双稳态。 微粒的尺寸和球形直径几乎一致，远小于颗粒中的光的波长。 该复合材料在500nm范围内具有不同强度的激光照射时，在临界输入强度下变得不透明，并保持不透明，直到输入强度达到最初变为不透明度的强度以下的一定水平。 因此，该材料表现为光学开关和限制器。
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7.发明授权Composite logic gate element and multiplexer for optical computing and optical communication 失效用于光学计算和光通信的复合逻辑门元件和多路复用器
公开(公告)号：US4720175A
公开(公告)日：1988-01-19
申请号：US803360
申请日：1985-12-02
申请人： Joseph W. Haus , Charles M. Bowden , Chi C. Sung
发明人： Joseph W. Haus , Charles M. Bowden , Chi C. Sung
CPC分类号： G02F3/024
摘要： An optically bistable, nonlinear optical device that produces an output that follows two hysteresis loops for an optical intensity variation input at a given frequency. One hysteresis loop follows a clockwise path of development, the other follows a counterclockwise path when the input field or optical intensity is ramped to a large value and returned again to a small value. These features of the device are effectively engineered by controlling the temperature of the input and output faces of the device, allowing optical logic gating and multiplex operation.
摘要翻译： 一种光学双稳态非线性光学器件，其产生在给定频率处的光强度变化输入的两个滞后回路之后的输出。 一个磁滞回线遵循顺时针的显影路径，另一个跟随逆时针路径，当输入场或光强度斜升到一个较大的值并再次返回到一个小的值时。 通过控制器件的输入和输出面的温度，可以有效地设计器件的这些特性，从而允许光逻辑门控和多路复用操作。
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