| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 161 | Image-rotating, 4-mirror, ring optical parametric oscillator | US10217853 | 2002-08-12 | US06775054B1 | 2004-08-10 | Arlee V. Smith; Darrell J. Armstrong |
| A device for optical parametric amplification utilizing four mirrors oriented in a nonplanar configuration where the optical plane formed by two of the mirrors is orthogonal to the optical plane formed by the other two mirrors and with the ratio of lengths of the laser beam paths approximately constant regardless of the scale of the device. With a cavity length of less than approximately 110 mm, a conversion efficiency of greater than 45% can be achieved. | ||||||
| 162 | Optical wavelength division multiplexer | US10098244 | 2002-03-15 | US06690854B2 | 2004-02-10 | Rene Helbing |
| An optical wavelength division multiplexing (WDM) device comprising optical components that are integrated together to provide an optical WDM that does not require circulators, that has simplified alignment and that is relatively low in cost. The WDM device comprises an integrated port separator, a dispersive element and a reflector. The integrated port separator comprises various optical components, that spatially separate the polarization components of a light beam input through an input port of the integrated port separator. The spatially separated polarization components are output from the integrated port separator and impinge on the dispersive element, which spatially separates the wavelengths associated with the polarization components impinging thereon. The spatially separated wavelengths then impinge on the reflective element and are reflected with angles of polarization that depend on the state of the reflective element. The reflected polarization components maintain their respective wavelengths when they are reflected. However, when they are reflected, they are directed along a path through the integrated port separator that depends on the angles of polarization of the reflected polarization components, which depends on the state of the reflective element. | ||||||
| 163 | Single cell gap transflective liquid crystal display with slanted reflector above transmissive pixels | US10430019 | 2003-05-05 | US20030210366A1 | 2003-11-13 | Yi-Pai Huang; Xin-Yu Zhu; Shin-Tson Wu; Han-Ping Shieh |
| Single cell gap transflective liquid crystal display which provides that the backlight traverses the reflective pixel portion twice and thereby follows a path similar to that of the ambient light. A slant reflector is built on the path of the back light to reflect the transmitted light to the reflective portion so that the back light and ambient light follow similar paths. | ||||||
| 164 | OPTICAL WAVELENGTH DIVISION MULTIPLEXER | US10098244 | 2002-03-15 | US20030174936A1 | 2003-09-18 | Rene Helbing |
| An optical wavelength division multiplexing (WDM) device comprising optical components that are integrated together to provide an optical WDM that does not require circulators, that has simplified alignment and that is relatively low in cost. The WDM device comprises an integrated port separator, a dispersive element and a reflector. The integrated port separator comprises various optical components that spatially separate the polarization components of a light beam input through an input port of the integrated port separator. The spatially separated polarization components are output from the integrated port separator and impinge on the dispersive element, which spatially separates the wavelengths associated with the polarization components impinging thereon. The spatially separated wavelengths then impinge on the reflective element and are reflected with angles of polarization that depend on the state of the reflective element. The reflected polarization components maintain their respective wavelengths when they are reflected. However, when they are reflected, they are directed along a path through the integrated port separator that depends on the angles of polarization of the reflected polarization components, which depends on the state of the reflective element. | ||||||
| 165 | Reciprocating optical modulation system | US09820664 | 2001-03-30 | US06600588B2 | 2003-07-29 | Tetsuya Kawanishi |
| A, reciprocating optical modulation system includes a device that modulates light of a predetermined frequency by an integer multiple n to produce a group of nth order sidebands thereof; a device that modulates the nth order sidebands to produce (n+1)th order sidebands; and a device that selects at least part of the (n+1)th order sidebands. | ||||||
| 166 | Variable polarization plane rotator and optical device using same | US10061307 | 2002-02-04 | US20030072512A1 | 2003-04-17 | Hiroshi Nagaeda; Nobuaki Mitamura; Kazuaki Akimoto |
| An object of the invention is to provide a small and low-cost variable polarization plane rotator that can control a rotation angle of the polarization plane easily, and an optical device using the same. To this end, a variable polarization plane rotator according to the present invention is provided with a null/4 phase plate having an optical axis in the same direction as, or at a 90 degree angle relative to, a polarization direction of input light beam, to apply a 90 degree phase difference between polarization components parallel to and perpendicular to the optical axis thereof, a phase difference variable element having an optical axis at a null45 degree angle relative to the optical axis of the null/4 phase plate, to apply a variable phase difference between the polarization components parallel to and perpendicular to the optical axis thereof, and a phase difference adjustment section that 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 be into elliptically polarized light or circularly polarized light, is transmitted through the null/4 phase plate to be into linearly polarized light, to thereby rotate the polarization plane of the input light beam by an angle corresponding to the phase difference applied by the phase difference variable element. | ||||||
| 167 | High speed electro-optic modulator | US10156241 | 2002-05-24 | US20020176147A1 | 2002-11-28 | Alexander B. Romanovsky |
| An optical apparatus comprises an input port for receiving light, an output port for outputting light, and an optical path extending from the input port to the output port. The optical path is at least partially comprised of polycrystalline electro-optic material. The optical apparatus further comprises a field generator that generates a field in the polycrystalline electro-optic material. The polycrystalline electro-optic material is configured with respect to the input port and the output port, and is responsive to the field, to cause at least a substantial portion of light propagating along the optical path to deviate from the optical path along a plurality of deviant optical paths. The plurality of deviant optical paths do not pass through the output port, thereby reducing light output through the output port. | ||||||
| 168 | Faraday Rotator | US10112711 | 2002-04-02 | US20020149831A1 | 2002-10-17 | Takeshi Matsushita; Mitsuteru Inoue; Hideki Kato; Akio Takayama |
| A Faraday rotator is provided which obtains excellent optical characteristics with a small number of layers. In the Faraday rotator, a metal reflective film is formed on a substrate, then a first periodic dielectric multilayer film made of silicon dioxide SiO2 and tantalum pentaoxide Ta2O5, a magneto-optical thin film, and a second periodic dielectric multilayer film made of tantalum pentaoxide Ta2O5 and silicon dioxide SiO2 are formed sequentially. The number of layers of the first periodic dielectric multilayer film is larger than that of the second periodic dielectric multilayer film. Incident light from a polarizer passes through the periodic dielectric multilayer films, is reflected at the metal reflective film, returns through the periodic dielectric multilayer films, and passes through an analyzer to exit out. | ||||||
| 169 | FAST OPTICAL MODULATOR | US09796026 | 2001-02-28 | US20020149830A1 | 2002-10-17 | William J. Cottrell; Thomas G. Ference; Kenneth A. Puzey |
| A short pulse of radiation is generated by shining radiation through a magneto-optical material. The material is excited twice to rapidly change a property of the wave, such as the direction of the polarization. The first excitation rotates the polarization in a first direction and the second excitation brings the polarization back to its initial direction before the first excitation. Although the time for relaxation from the excitations may be lengthy, a pulse of light can be produced that is shorter in time than the time for excitation plus the time for relaxation. Light experiencing the pair of lengthy relaxations has each cancelling the effect of the other. The pulse of light has a length that depends on the time difference between the two excitations and the spacing between them. The rapid excitations are provided by pulses of current in a superconductor located near the magneto-optical material. | ||||||
| 170 | High-speed electro-optic modulator | US09695538 | 2000-10-24 | US06404538B1 | 2002-06-11 | Qiushui Chen; Gary Y. Wang; Paul Melman; Kevin Zou; Hua Jiang; Run Zhang; Jing Zhao; Dean Tsang; Feiling Wang |
| An optical modulator is provided to control the intensity of a transmitted or reflected light. In a transmission mode, a separator splits arbitrarily polarized light into two polarization rays and one is made to travel a separate path from the other. A recombiner causes the two rays to recombine at an output unless an electro-optic phase retarder changes the polarization of the two rays, in which case, both of them miss the output by an amount which is a function of the voltage on the retarder. A normally-off version with low polarization mode dispersion is obtained by changing the orientation of the recombiner. A normally-on version with low polarization mode dispersion is obtained with a passive polarization direction rotator. Similar results can be obtained in a reflection mode where the input and output are on the same side of the modulator. Versions using a GRIN lens are particularly suited to modulation of light out of and back into fiber-optic cables. The device can be operated as a variable optical attenuator, an optical switch, or a high speed modulator and is insensitive to polarization of the input light. A preferred material for the phase retarder is a hot-pressed ceramic lead lanthanum zirconate titanate composition. | ||||||
| 171 | Efficient angle tunable output from a monolithic serial KTA optical parametric oscillator | US09939004 | 2001-08-24 | US20020048077A1 | 2002-04-25 | Joseph M. Fukumoto |
| An arrangement (10) for efficiently shifting energy received at a first wavelength and outputting the shifted energy at a second wavelength. The arrangement (10) includes a laser (12) and an optical parametric oscillator (14) of unique design. The oscillator (14) is constructed with an energy shifting crystal (20) and first and second reflective elements (16) and (18) disposed on either side thereof. Light from the laser (12) at a fundamental frequency is shifted by the crystal and output at a second wavelength. The second wavelength is a secondary emission of energy induced by a primary emission generated by the first wavelength in the crystal. A novel feature of the invention is a coating applied on the reflective elements (16 and/or 18) for containing the primary emission and enhancing the secondary emission. This constrains the energy to be output by the arrangement (10) at the wavelength of the desired secondary emission. | ||||||
| 172 | Optical signal scrambling | US09559656 | 2000-04-28 | US06333808B1 | 2001-12-25 | Stephen Michael Webb; Ian Haxell |
| An optical signal scrambler (18) has an optical phase modulator (22) which has a common input/output for an optical signal. The modulator also has an input for a modulating signal and a common output/input which is coupled to a 45° Faraday mirror (24). The scrambler (18) operates to modify an optical input signal received at the input/output of the modulator (22) so that it is returned as an output which is phase scrambled. | ||||||
| 173 | Broad tuning-range optical parametric oscillator | US09250721 | 1999-02-16 | US06295160B1 | 2001-09-25 | Kevin Dapeng Zhang; Eli Margalith |
| An optical parametric oscillator for converting the wavelength of a laser pump beam into a signal wavelength and an idler wavelength. A co-linear double resonance cavity is created with a right angle prism serving as a maximum reflector for both the pump beam as well as the signal and idler beams. A non-linear crystal is positioned within said resonance cavity and is pivoted to tune the oscillator. A pump beam deflector is positioned to deflect the pump beam into the resonance cavity. The deflector preferably is a mirror with a multi-layer coating configured to provide maximum reflection at the wavelength of the pump beam and maximum transmittal of the signal and idler beams over their ranges. The pump beam passes twice through said non-linear crystal and is efficiently converted into said signal and idler beams in said non-linear crystal. The deflector can be placed inside or outside the cavity. In a preferred embodiment the output coupler is an uncoated window. | ||||||
| 174 | Traveling-wave reflective electro-optic modulator | US999194 | 1997-12-19 | US5886807A | 1999-03-23 | Uri Cummings |
| A traveling-wave electro-optic modulator using reflected signals to achieve a one-time rephasing. For a given crystal length, the interaction length is effectively doubled and a 3-dB gain is automatically achieved compared to a conventional traveling-wave modulator. | ||||||
| 175 | Light beam scanning apparatus | US718049 | 1985-03-29 | US4974943A | 1990-12-04 | Masaru Noguchi |
| A light beam scanning apparatus comprises an ultrasonic light deflector for diffracting a light beam of a predetermined wavelength, and a reflecting mirror positioned approximately normal to light deflected by the ultrasonic light deflector for reflecting the deflected light and making it again impinge upon the ultrasonic light deflector. | ||||||
| 176 | Enhanced field of view parametric image converter | US38393573 | 1973-07-30 | US3824717A | 1974-07-23 | EVTUHOV V; SOFFER B; TSENG D |
| There is disclosed an optical frequency up-conversion system which uses a pair of dichroic mirrors positioned on the optical axis of an infrared collector to produce a multipass traverse of a nonlinear crystal positioned between the mirrors by a beam of pumping radiation in order to enhance the field of view, the conversion efficiency and the resolution of the system. The crystal is placed in the optical path at the interaction area of the infrared beam and the pump beam and between the dichroic mirrors. One of the mirrors is transparent to the infrared frequency and the other is transparent to the up-converter sum frequency. Both mirrors are reflective at the pump frequency. The system may be passive and collect a thermal image or it may utilize a pulsed ir illuminator laser in conjunction with a synchronously pulsed pump laser in order to increase the output power level.
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| 177 | Electrooptic modulator utilizing phase retardation effect of internal reflections | US3694052D | 1971-02-01 | US3694052A | 1972-09-26 | ORTEL WILLIAM CHARLES GORMLEY |
| A lithium tantalate crystal is configured to have plural surfaces for producing sufficient internal reflection of a light beam to effect approximately a complete phase reversal of one component of the electric vector, which vector is transverse to the direction of propagation, of the beam within the crystal between two separate electrooptic modulation operations on the same beam within that crystal.
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| 178 | Dispositif optoélectronique intégré comprenant une section d'émission laser et une section de traitement du signal optique émis. | EP13306232.3 | 2013-09-09 | EP2846424B8 | 2018-10-10 | Mallecot, Franck |
| 179 | PARAMETRIC TERAHERTZ RADIATION GENERATION | EP10010843.0 | 2005-07-26 | EP2309325B1 | 2018-05-30 | Rae, Cameron Francis; Dunn, Malcolm Harry; Terry, Jonathan A.C. |
| An optical parametric device, for example an optical parametric generator or amplifier or oscillator, comprising a non-linear material that is operable to generate a signal and an idler wave in response to being stimulated with a pump wave, wherein the pump wave source and the non-linear medium are provided in the same optical cavity and the non-linear medium is such that the pump, idler and signal waves are non-collinear. Alternatively, the non-linear medium is provided in an optical cavity that resonates the pump wave, and the pump wave and the generated idler and signal waves are non-collinear. | ||||||
| 180 | OPTOELECTRONIC SWITCHES USING ON-CHIP OPTICAL WAVEGUIDES | EP08726728.2 | 2008-03-11 | EP2252906B1 | 2018-05-23 | MCLAREN, Moray; AHN, Jung Ho; BINKERT, Nathan L.; DAVIS, Alan L.; JOUPPI, Norman P. |
| Embodiments of the present invention are directed to optoelectronic network switches. In one embodiment, an optoelectronic switch includes a set of roughly parallel input waveguides and a set of roughly parallel output waveguides positioned roughly perpendicular to the input waveguides. Each of the output waveguides crosses the set of input waveguides. The optoelectronic switch includes at least one switch element configured to switch one or more optical signals transmitted on one or more input waveguides onto one or more crossing output waveguides. | ||||||
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