| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 141 | ALL-OPTICAL LOGIC GATES USING NONLINEAR ELEMENTS-CLAIM SET VI | US11354735 | 2006-02-14 | US20070189706A1 | 2007-08-16 | John Covey |
| An all-optical logic gates comprises a nonlinear element such as an optical resonator configured to receive optical input signals, at least one of which is amplitude-modulated to include data. The nonlinear element is configured in relation to the carrier frequency of the optical input signals to perform a logic operation based on the resonant frequency of the nonlinear element in relation to the carrier frequency. Based on the optical input signals, the nonlinear element generates an optical output signal having a binary logic level. A combining medium can be used to combine the optical input signals for discrimination by the nonlinear element to generate the optical output signal. Various embodiments include all-optical AND, NOT, NAND, NOR, OR, XOR, and XNOR gates and memory latch. | ||||||
| 142 | High-efficiency multiple-pass nonlinear optical wavelength converter with an electro-optic phase compensator and amplitude modulator | US11018115 | 2004-12-20 | US07173755B2 | 2007-02-06 | Yen-Chien Huang; Yen-Hung Chen; An-Chung Chiang; Ko-Wei Chang |
| A high-efficiency multiple-pass nonlinear wavelength converter and amplitude modulator employs a variable dispersion element between adjacent passes of a nonlinear wavelength conversion process in a single nonlinear optical material substrate. When controlled by a voltage via the electro-optic effect, the variable dispersion element dynamically alters the phase matching condition of the multiple-pass nonlinear wavelength conversion process and thus modulates the laser output amplitude. When the phase mismatch between passes is completely compensated by the variable dispersion element, the multiple-pass nonlinear wavelength converter achieves its maximum efficiency. | ||||||
| 143 | Double pass light modulator | US11188330 | 2005-07-25 | US20070019274A1 | 2007-01-25 | Scott Lerner; John Sterner; Arthur Piehl; Anurag Gupta |
| An embodiment of a double pass modulator includes a reflective polarizer adapted to pass light having a predetermined polarization state therethrough and to reflect substantially all other light, a quarter wave plate positioned to receive and pass light from the reflective polarizer, the quarter wave plate shifting the relative phase of the light passing therethrough by 45° with respect to the optic axis of the plate, and a reflector that receives light from the quarter wave plate and modulates at least a portion of the light incident thereon in a predetermined manner. | ||||||
| 144 | Method and radiation source for generating pulsed coherent radiation | US11136106 | 2005-05-24 | US20060268949A1 | 2006-11-30 | Christoph Gohle; Theodor Hansch; Ronald Holzwarth; Thomas Udem |
| A method of generating pulsed coherent radiation, comprises the step of generating high harmonic pulses by an interaction of laser light pulses with a non-linear medium contained in a resonant cavity, wherein the non-linear medium is arranged in an environment of reduced pressure. Furthermore, a radiation source of generating pulsed coherent radiation is described, comprising a laser pulse source for generating laser light pulses, a resonant cavity including a non-linear medium for generating high harmonic pulses by an interaction of the laser light pulses with the non-linear medium, wherein the non-linear medium is arranged in an environment of reduced pressure. | ||||||
| 145 | Hitless tunable optical add drop multiplexer with vernier gratings | US11151000 | 2005-06-13 | US07110622B2 | 2006-09-19 | David A. G. Deacon; Steven J. Madden; Jorg Hubner |
| A set of three gratings may be operated in a vernier loop fashion to select a particular wavelength from a wavelength division multiplexed system. As a result, an optical add/drop multiplexer may be provided that can be tuned to select a desired wavelength. In one embodiment, the tuning may be done thermo-optically. | ||||||
| 146 | Four-wave-mixing based optical wavelength converter device | US10518855 | 2002-06-28 | US20060092500A1 | 2006-05-04 | Andrea Melloni; Francesco Morichetti; Silvia Pietralunga; Mario Martinelli |
| Wavelength converter device for generating a converted radiation at frequency Ωg through interaction between at least one signal radiation at frequency Ωg and at least one pump radiation at frequency Ωg, with an input for the at least one signal radiation at frequency Ωg; a pump light source for generating the at least one pump radiation at frequency Ωg, an output for taking out the converted radiation at frequency Ωg, a structure for transmitting the signal radiation, the structure including one optical resonator having a non-linear material, having an optical length of at least 40*η/2, wavelength η being the wavelength of the pump radiation, and resonating at the pump, signal and converted frequencies Ωp, Ωs, and Ωg. The structure has a further optical resonator coupled in series to the optical resonator, the further optical resonator having a non-linear material, having an optical length of at least 40*η/2, wherein η is the wavelength of the pump radiation, and resonating at the pump, signal and converted Ωp, Ωs and Ωg, wherein by propagating through the structure, the pump and signal radiation generate the converted radiation by non-linear interaction within the optical resonators. | ||||||
| 147 | Frequency conversion efficiency | US10910121 | 2004-08-03 | US07035298B2 | 2006-04-25 | Konstantin Vodopyanov; Bruce Richman; Chris Rella |
| Improved multipass second harmonic generation (SHG) is provided by the use of an inverting, self-imaging telescope which ensures parallelism of all passes of all beams within the nonlinear medium. Improved multipass SHG is also provided by the use of a wedged phasor which provides a simple adjustment of the relative phase of the pump beam and second harmonic beam between passes. Improved multipass SHG is provided by the use of an inverting self-imaging telescope in combination with a wedged phasor which provides a simple adjustment of the relative phase of the pump beam and second harmonic beam between passes, ensures parallelism of all passes of all beams within the nonlinear medium. A further embodiment includes an OPO and at least one phasor and preferably first and second telescope assemblies. | ||||||
| 148 | Magneto-optical devices | US10923873 | 2004-08-24 | US07002732B2 | 2006-02-21 | Shinji Iwatsuka |
| The invention provides small-sized, power-saving and easily-producible magneto-optical devices. The magneto-optical device comprises a Faraday rotator having nearly parallel surfaces and a Z-direction magnetic easy axis; a total reflection film formed partly on one surface of the Faraday rotator; another total reflection film formed partly on the other surface thereof; a light input region through which light enters the Faraday rotator; a light output region through which the light having alternately reflected on the total reflection films goes out of the Faraday rotator; a permanent magnet that forms a predetermined magnetic domain structure in the Faraday rotator and applies a magnetic field component in the Z-direction to the Faraday rotator so that the magnetization direction could be the same both in the light input region and the light output region; and an electromagnet that varies the position at which the magnetic field component applied to the Faraday rotator is 0 (zero). | ||||||
| 149 | Optical control element | US10481897 | 2002-06-18 | US06958845B2 | 2005-10-25 | Olli-Pekka Hiironen; Harri Järvinen |
| An optical control modulator comprises an input to receive light from a light source; a polarization divider to divide the light into two orthogonal plane-polarized light components; a Faraday material which, upon being energized, rotates the plane of polarization of the plane-polarized light as it passes through the material; and an output. The light travels through the Faraday material in opposite directions on a common path. In one embodiment, the light passes once through the Faraday material on a loop path. In another embodiment, the light passes twice through the Faraday material by being reflected by a mirror disposed at a back face of the Faraday material. | ||||||
| 150 | Liquid crystal display panel with improved image contrast | US11071411 | 2005-03-02 | US20050212993A1 | 2005-09-29 | Pavel Lazarev; Michael Paukshto |
| The present invention relates to a liquid crystal display panel with improved image contrast comprising an array of pixel regions and a sequence of a recycling backlight structure comprising broadband rear interference polar (RI-Polar) having a transmission axis AB with preset orientation, a spatial intensity modulation structure comprising a broadband front interference polar (FI-Polar) having a transmission axis approximately parallel to the transmission axis AB, a spectral filtering structure, and antireflection means. Each said pixel region spatially encompasses a plurality of subpixel regions. The RI-Polar and FI-Polar are multilayer structures of stacked layers. At least one layer of each structure is optically anisotropic, made by means of Cascade Crystallization Process and characterized by a globally ordered biaxial crystalline structure with an intermolecular spacing of 3.4±0.3 Å in the direction approximately parallel to the transmission axis AB. Said layer is transparent in the wavelength band of visible light, and is formed by rodlike supramolecules, which represent at least one polycyclic organic compound with a conjugated π-system and ionogenic groups. | ||||||
| 151 | Slab type solid-state laser medium and slab type nonlinear optical medium each using light path formed by multiple reflection caused by three reflecting surfaces | US11060543 | 2005-02-18 | US20050195879A1 | 2005-09-08 | Mitsuo Ishizu |
| A slab type solid-state laser medium furnished on side faces thereof with three reflecting surfaces, provided therein with a light path for optical amplification attained by multiple reflection on the reflecting surfaces, wherein the three reflecting surfaces comprises Surface C serving as a surface on which an incident laser beam reflects first in the solid-state laser medium, Surface B serving as a surface on which the beam reflected on Surface C is subsequently reflected and Surface A serving as a remaining surface, and wherein when Surface Ac and Surface Bc respectively denote imaginary surfaces forming reflected images of Surface A and Surface B relative to Surface C and when Angle C denotes an angle of intersection between Surface A and Surface B or extended surfaces thereof, Angle A denotes an angle of intersection between Surface B and Surface C or extended surfaces thereof and Angle B denotes an angle of intersection between Surface C and Surface A or extended surfaces thereof, Angle C is larger than each of Angle A and Angle B and the incident laser beam is injected into the solid-state laser medium so that the light path formed for the optical amplification in the solid-state laser medium is equivalent to a light path in which the injected beam repeating reflection between Surface A and Surface Bc has been folded back at Surface C, whereby the light path is capable of producing unit reflections on Surface C, Surface B, Surface C and Surface A sequentially in the order mentioned and inducing a multiplicity of the unit reflections. Otherwise, for the purpose of inducing a nonlinear optical effect, a slab type nonlinear optical device similar in shape to the solid-state laser medium is used in the place of the solid-state laser medium. | ||||||
| 152 | Hitless tunable optical add drop multiplexer with vernier gratings | US10609837 | 2003-06-30 | US06928208B2 | 2005-08-09 | David A.G. Deacon; Steven J. Madden; Jorg Hubner |
| A set of three gratings may be operated in a vernier loop fashion to select a particular wavelength from a wavelength division multiplexed system. As a result, an optical add/drop multiplexer may be provided that can be tuned to select a desired wavelength. In one embodiment, the tuning may be done thermo-optically. | ||||||
| 153 | Magneto-optical devices | US10923873 | 2004-08-24 | US20050146769A1 | 2005-07-07 | Shinji Iwatsuka |
| The invention provides small-sized, power-saving and easily-producible magneto-optical devices. The magneto-optical device comprises a Faraday rotator having nearly parallel surfaces and a Z-direction magnetic easy axis; a total reflection film formed partly on one surface of the Faraday rotator; another total reflection film formed partly on the other surface thereof; a light input region through which light enters the Faraday rotator; a light output region through which the light having alternately reflected on the total reflection films goes out of the Faraday rotator; a permanent magnet that forms a predetermined magnetic domain structure in the Faraday rotator and applies a magnetic field component in the Z-direction to the Faraday rotator so that the magnetization direction could be the same both in the light input region and the light output region; and an electromagnet that varies the position at which the magnetic field component applied to the Faraday rotator is 0 (zero). | ||||||
| 154 | Variable polarization plane rotator and optical device using same | US10974780 | 2004-10-28 | US20050084198A1 | 2005-04-21 | Hiroshi Nagaeda; Nobuaki Mitamura; Kazuaki Akimoto |
| An optical device includes a small and low-cost variable polarization plane rotator that can control a rotation angle of the polarization plane easily. A variable polarization plane rotator is provided with a λ/4 phase plate having an optical axis in the same direction as, or at a 90 degree angle relative to, a polarization direction of an input light beam. A phase difference variable element has an optical axis at a ±45 degree angle relative to the optical axis of the λ/4 phase plate, to apply a variable phase difference between the polarization components parallel to and perpendicular to the optical axis thereof. A phase difference adjustment section adjusts the variable phase difference of the phase difference variable element, wherein the input light beam after being transmitted through the phase difference variable element to form elliptically polarized light or circularly polarized light, is transmitted through the λ/4 phase plate to form linearly polarized light. The polarization plane of the input light beam is rotated by an angle corresponding to the phase difference applied by the phase difference variable element. | ||||||
| 155 | Direct electrical-to-optical conversion and light modulation in micro whispering-gallery-mode resonators | US09883085 | 2001-06-15 | US06871025B2 | 2005-03-22 | Lute Maleki; Anthony F. J. Levi |
| Techniques for directly converting an electrical signal into an optical signal by using a whispering gallery mode optical resonator formed of a dielectric material that allows for direct modulation of optical absorption by the electrical signal. | ||||||
| 156 | Frequency conversion efficiency | US10869623 | 2004-06-16 | US20040228372A1 | 2004-11-18 | Konstantin Vodopyanov; Bruce Richman; Chris Rella |
| According to one embodiment of the invention, improved multipass second harmonic generation (SHG) is provided by the use of an inverting, self-imaging telescope. This embodiment ensures parallelism of all passes of all beams within the nonlinear medium. According to another embodiment of the invention, improved multipass SHG is provided by the use of a wedged phasor. This arrangement provides a simple adjustment of the relative phase of the pump beam and second harmonic beam between passes. According to a further embodiment of the invention, improved multipass SHG is provided by the use of an inverting self-imaging telescope in combination with a wedged phasor. This arrangement provides a simple adjustment of the relative phase of the pump beam and second harmonic beam between passes, and ensures parallelism of all passes of all beams within the nonlinear medium. This arrangement also allows corresponding passes of the pump beam and second harmonic beam to be made collinear within the nonlinear medium. A further embodiment of the invention comprises an OPO having at least one phasor for receiving and adjusting the phase of the one or more beams resonating within the optical cavity which forms part of the OPO. A further OPO embodiment includes first and second telescope assemblies, the optical cavity, phasor and nonlinear medium components of the OPO being situated between the two telescopes. | ||||||
| 157 | Color liquid crystal display panel | US10845698 | 2004-05-14 | US20040227878A1 | 2004-11-18 | Takeyuki Ashida; Kimitaka Nomura |
| A color liquid crystal display panel includes: a first substrate provided on a light source side; a second substrate provided on a viewer side so as to oppose the first substrate; a liquid crystal layer provided between the first substrate and the second substrate; a color filter layer provided between the first substrate and the second substrate; a first transflective film provided closer to the light source than the liquid crystal layer and the color filter layer for reflecting ambient light coming from the viewer side while transmitting therethrough light-source light coming from the light source side; and a second transflective film provided closer to the viewer than the color filter layer for reflecting the ambient light while transmitting therethrough the light-source light. | ||||||
| 158 | Optical control element | US10481897 | 2003-12-23 | US20040190107A1 | 2004-09-30 | Olli-Pekka Hiironen; Harri Jarvinen |
| An optical control modulator comprises an input to receive light from a light source, a polarisation divider to divide the light into two orthogonal plane-polarised light components and a Faraday material which upon being energised rotates the plane of polarisation of the plane-polarised light as it passes through the material and an output. The light travels through the Faraday material in opposite directions on a common path. In one embodiment, the light passes once through the Faraday material on a loop path. In another embodiment, the light passes twice through the Faraday material by being reflected by a mirror disposed at a back face of the Faraday material. | ||||||
| 159 | Contrast enhancement for transmissive display systems | US09483702 | 2000-01-14 | US06795147B1 | 2004-09-21 | Gary K. Starkweather |
| A transmissive display system with a controllable display cell, such as a liquid crystal display cell, includes a pair of generally non-absorptive, high reflectance, low transmittance optical layers positioned opposite each other across the cell to provide improved image contrast. In one implementation, non-absorptive, high reflectance, low transmittance optical layers may be formed by dielectric coatings on inner surfaces of generally transmissive plates facing the display cell. | ||||||
| 160 | Folded liquid-crystal variable optical attenuator | US10053470 | 2001-11-02 | US06781736B2 | 2004-08-24 | Clifford C. Hoyt; Peter J. Miller |
| A variable optical attenuator including: a birefringent element positioned to separate an input optical signal into two spatially separated, orthogonally polarized beams; a LC modulator positioned to receive the orthogonally polarized beams and selectively alter their polarizations; a reflective element positioned to reflect the beams back through the LC modulator and the birefringent element, wherein the birefringent element recombines orthogonally polarized components of the reflected beams to produce an output optical signal; and a controller coupled to the LC modulator to selectively cause the LC modulator to alter the polarizations of the orthogonally polarized beams, wherein during operation the controller is responsive to a request to variably attenuate the intensity of the output optical signal relative to the intensity of the input optical signal to one of multiple non-zero attenuation settings. | ||||||
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