| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 121 | Optical modulator and optical transmitter | US12155120 | 2008-05-29 | US08098997B2 | 2012-01-17 | Masaki Sugiyama |
| A reduction in size and cost of an optical modulator is achieved with a simple configuration, while improving the modulation characteristics. An optical modulator modulates light branched by an optical coupler and then couples the light via the optical coupler. The optical coupler is formed in a substrate having electro-optic effects. An optical waveguide is formed in the substrate and, includes a turnback section and ends into which the light branched by the optical coupler is input. A signal electrode is provided in the substrate along the optical waveguide. A modulation signal to modulate the light passing through the optical waveguide is input to the signal electrode. | ||||||
| 122 | GENERATION OF BURST OF LASER PULSES | US12918472 | 2008-02-19 | US20110182306A1 | 2011-07-28 | Abbas S. Hosseini; Peter R. Herman; Thorald Horst Bergmann |
| This invention relates to a method for generating bursts of laser pulses and to an apparatus for generating bursts of laser pulses and to a Pockels cell driving circuit. A method for generating bursts of laser pulses comprising generating first repetition rate laser pulses, and generating first repetition rate laser bursts from the repetition laser pulses, the laser bursts each containing a sequence of second repetition rate laser pulses, wherein the second repetition rate is higher than the first repetition rate. | ||||||
| 123 | OPTICAL DEVICE, METHOD FOR MANUFACTURING THE SAME AND OPTICAL INTEGRATED DEVICE USING THE SAME | US12920449 | 2009-03-03 | US20110002578A1 | 2011-01-06 | Masafumi Nakada; Takanori Shimizu; Nobuo Suzuki |
| Provided is an optical device that includes a ring-shaped optical waveguide and an input/output optical waveguide, and that changes a resonant wavelength of the ring-shaped optical waveguide, in which the ring-shaped optical waveguide includes in part a refractive index control section for controlling a refractive index at a guided wavelength, and the refractive index control section is formed of an optical material having a thermo-optic effect with its sign different from that of an optical material that forms a section of the ring-shaped optical waveguide other than the refractive index control section. | ||||||
| 124 | LIQUID CRYSTAL OPTICAL DEVICE CONFIGURED TO REDUCE POLARIZATION DEPENDENT LOSS AND POLARIZATION MODE DISPERSION | US12475116 | 2009-05-29 | US20100302469A1 | 2010-12-02 | Xuefeng YUE; Ruibo WANG |
| An LC-based optical device compensates for differences in optical path lengths of polarization components of input beam. As a result, PDL and PMD of the optical device are reduced. The compensation mechanism may be a glass plate that is disposed in an optical path of a polarization component so that the optical path length of that polarization component can be made substantially equal to the optical path length of the other polarization component that traverses through a half-wave plate. Another compensation mechanism is a birefringent displacer that has two sections sandwiching a half-wave plate, wherein the two sections are of different widths and the planar front surface of the birefringent displacer can be positioned to be non-orthogonal with respect to the incident input light beam. | ||||||
| 125 | Optical compressor and ultra-short pulse light source | US12135657 | 2008-06-09 | US07769262B2 | 2010-08-03 | Atsushi Oguri; Shunichi Matsushita |
| Provided is an ultra-short pulse light source having an optical pulse generator 111 for emitting short pulse light, an optical amplifier 112 for amplifying the short pulse light output from the optical pulse generator 111 and an optical compressor 120 for compressing the short pulse light. The optical compressor 120 has multi-step configuration of steps polarization beam splitters 1211,2, optical fibers 1221,2,1231,2 for compressing the incident pulse light, polarization rotating element 1241,2, for rotating the polarization direction of the incident light by 90 degrees to return the light to the optical fibers 1231,2, polarization maintaining optical fibers 1251,2 provided to the output side of the polarization beam splitters 1211,2, and a polarization maintaining optical fiber 1251 at the front step is connected to a polarization maintaining optical fiber 1252 at the rear step. | ||||||
| 126 | Optoelectronic modulator and electric-field sensor with multiple optical-waveguide gratings | US12141825 | 2008-06-18 | US07657132B1 | 2010-02-02 | Daniel Yap; David L. Persechini; Kevin Geary |
| An optoelectronic-RF device has at least one optical modulator/sensor comprising at least two cascaded optical-waveguide gratings and at least one non-grating optical waveguide segment interconnecting the at least two cascaded optical-waveguide gratings, with at least one optical waveguide segment interconnecting the at least two cascaded optical-waveguide gratings via the at least one non-grating optical waveguide segment. An RF waveguide is provided for propagating an RF electric field, the at least one optical modulator/sensor being disposed in and forming a portion of the RF waveguide with light propagating through the cascaded optical-waveguide gratings in a direction that is perpendicular to a direction of propagation of the RF electric field in the RF waveguide. | ||||||
| 127 | Nonresonant multiple pass nonlinear structure | US11956152 | 2007-12-13 | US07612934B2 | 2009-11-03 | William David Bragg; Jason O'Daniel |
| A system, a structure, and a method for the generation of second harmonic light are provided. A laser system comprises a seed laser that produces a fundamental frequency light, and a nonresonant multiple pass nonlinear structure generates a second harmonic light using the fundamental frequency light. A second harmonic outcoupler outputs the second harmonic light from the laser system and a reflecting structure reflects a remaining portion of the fundamental frequency light back into the nonresonant multiple pass nonlinear structure to generate additional second harmonic light. | ||||||
| 128 | RECIPROCATING OPTICAL MODULATION SYSTEM | US12063436 | 2006-08-09 | US20090103163A1 | 2009-04-23 | Tetsuya Kawanishi; Masayuki Izutsu; Takahide Sakamoto; Masahiro Tsuchiya |
| In order to provide a reciprocating optical modulation system capable of obtaining a broad bandwidth, a reciprocating optical modulation system (1) of the present invention is basically provided with an optical modulator (2) modulating an output light by controlling one of an intensity, a phase and a frequency of an input light; a first fiber grating (3) transmitting a light of a predetermined frequency domain among lights inputted to and outputted from the optical modulator while reflecting lights of other frequencies; a second fiber grating (4) transmitting a light of a predetermined frequency domain among lights inputted to and outputted from the optical modulator while reflecting lights of other frequencies; and a signal source (5) generating a modulating signal to be inputted to the optical modulator (2). | ||||||
| 129 | HIGH FREQUENCY ACOUSTO-OPTIC FREQUENCY SHIFTER HAVING WIDE ACCEPTANCE ANGLE | US11855630 | 2007-09-14 | US20090073543A1 | 2009-03-19 | CHRISTOPHER N. PANNELL; JONATHAN DAVID WARD |
| An acousto-optic (AO) frequency shifter includes an anisotropic crystal having an optical axis and an input face, and an acoustic transducer having electrodes affixed to the face for receiving an electrical signal and projecting an acoustic wave into the crystal. The anisotropic crystal is cut relative to the face so that the transducer is at an acoustic angle (θa) corresponding to a predetermined angle of incidence (θi) of an optical beam to be directed relative to the optic axis of the anisotropic crystal to substantially satisfy the parallel tangents phase matching condition. | ||||||
| 130 | Optical modulator and optical transmitter | US12155120 | 2008-05-29 | US20090067852A1 | 2009-03-12 | Masaki Sugiyama |
| A reduction in size and cost of an optical modulator is achieved with a simple configuration, while improving the modulation characteristics. An optical modulator modulates light branched by an optical coupler and then couples the light via the optical coupler. The optical coupler is formed in a substrate having electro-optic effects. An optical waveguide is formed in the substrate and, includes a turnback section and ends into which the light branched by the optical coupler is input. A signal electrode is provided in the substrate along the optical waveguide. A modulation signal to modulate the light passing through the optical waveguide is input to the signal electrode. | ||||||
| 131 | OPTICAL COMPRESSOR AND ULTRA-SHORT PULSE LIGHT SOURCE | US12135657 | 2008-06-09 | US20090016669A1 | 2009-01-15 | Atsushi OGURI; Shunichi Matsushita |
| Provided is an ultra-short pulse light source having an optical pulse generator 111 for emitting short pulse light, an optical amplifier 112 for amplifying the short pulse light output from the optical pulse generator 111 and an optical compressor 120 for compressing the short pulse light. The optical compressor 120 has multi-step configuration of steps polarization beam splitters 1211,2, optical fibers 1221,2, 1231,2 for compressing the incident pulse light, polarization rotating element 1241,2, for rotating the polarization direction of the incident light by 90 degrees to return the light to the optical fibers 1231,2, polarization maintaining optical fibers 1251,2 provided to the output side of the polarization beam splitters 1211,2, and a polarization maintaining optical fiber 1251 at the front step is connected to a polarization maintaining optical fiber 1252 at the rear step. | ||||||
| 132 | Phase-matched terahertz emitter | US11638100 | 2006-12-13 | US20080265165A1 | 2008-10-30 | Ka-Lo Yeh; Eric Statz; Keith A. Nelson |
| Methods and apparatus are disclosed for directing optical radiation to make multiple passes across an extended region of an electro-optic material, where during each pass the electro-optic material converts a portion of the optical radiation into terahertz radiation, and where the optical radiation is directed into the electro-optic material to cause an amplitude of the terahertz radiation generated from one or more earlier passes of the optical radiation to be constructively enhanced by the terahertz radiation generated from a later pass of the optical radiation. | ||||||
| 133 | Cavity-enhanced optical parametric amplification | US11279455 | 2006-04-12 | US07405868B2 | 2008-07-29 | Franz X. Kaertner; Fatih Omer Ilday |
| A simple and low-cost apparatus amplifies short optical pulses (e.g., in the femtosecond domain) to high pulse energies using energy stored in an enhancement cavity. The enhancement cavity is first filled with pump light from a pump laser; and a signal laser then directs a signal pulse into the cavity, where the signal pulse and pump laser both pass through a non-linear medium for parametric amplification of the signal pulse, wherein energy from the aggregated pump light is transferred to the signal pulse, which then exits the enhancement cavity. | ||||||
| 134 | OPTICAL SWITCH | US11627423 | 2007-01-26 | US20070292070A1 | 2007-12-20 | Ryou OKABE; Shigeki Watanabe; Fumio Futami; Shunsuke Ono |
| Reflection means such as a mirror are provided on the output end of an optical fiber, and the input signal light and control light are returned to the optical fiber. Although the zero-dispersion wavelength of the optical fiber fluctuates in the longitudinal direction, if the length is relatively short, it is possible to manufacture a high yield of optical fibers, which monotonically changes the zero-dispersion wavelength. Therefore, a relatively short optical fiber with a monotonic zero-dispersion change can be used. Since the zero-dispersion change is monotonic and the optical fiber is short, the amount of change in the zero-dispersion wavelength is small and the bandwidth becomes broader when the control light is set at the position of the average zero-dispersion wavelength. Additionally, although the length of the optical fiber is short, the operating length is twice as long and thus the generation efficiency does not degrade. | ||||||
| 135 | Electro-optic modulator with adjustable cavity size | US11801289 | 2007-05-09 | US20070263271A1 | 2007-11-15 | Xin Luo |
| A beam modulator (14) for modulating a beam (20) includes a modulator element (26) and a housing assembly (24). The modulator element (26) is positioned in the path of the beam (20). The housing assembly (24) retains the modulator element (26). Additionally, the housing assembly (24) defines a resonant cavity (328) with the modulator element (26) positioned therein. The housing assembly (24) includes a size adjuster (30) that can be moved to selectively adjust the size of the resonant cavity (328). As a result thereof, in certain embodiments, the resonant frequency of the beam modulator (14) can be easily tuned over a relatively large frequency range. | ||||||
| 136 | Polarization controlling apparatus and polarization operation apparatus | US11529347 | 2006-09-29 | US20070242340A1 | 2007-10-18 | Kazuo Hironishi; Nobuhiro Fukushima; Jens Rasmussen |
| A polarization controlling apparatus is disclosed, which enhances the degree of freedom in apparatus design.The polarization controlling apparatus includes a permanent magnet itself or a permanent magnet to which a part capable of being magnetized is applied, an electromagnet capable of changing the magnitude of a magnetic field to be generated thereby, and a Faraday rotation effect element, disposed at a position at which an interaction magnetic field produced by an interaction between a magnetic field generated by the permanent magnet and a magnetic field generated by the electromagnet acts, for producing a Faraday rotation effect on inputted light by means of the interaction magnetic field. The magnitude of the interaction magnetic field in the Faraday rotation effect element is varied by a magnetic field component generated by the electromagnet to vary the amount of the Faraday rotation effect to be had on the inputted light. | ||||||
| 137 | All-optical logic gates using nonlinear elements-claim set VI | US11354735 | 2006-02-14 | US07263262B1 | 2007-08-28 | John Luther 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. | ||||||
| 138 | 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. | ||||||
| 139 | 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. | ||||||
| 140 | 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. | ||||||
QQ群二维码
意见反馈
意见反馈