| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
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| 121 | Magneto optic kerr effect magnetometer for ultra-high anisotropy magnetic measurements | US13836466 | 2013-03-15 | US09348000B1 | 2016-05-24 | Jason L. Pressesky; Ganping Ju |
| A resistive electromagnet assembly comprises a pair of coils with a gap defined between the coils. The resistive electromagnet assembly is configured to generate a field having a magnetic flux density of at least about 4 Tesla and at a sweep rate to complete a hysteresis loop in less than about 1 minute. A support assembly is configured to support a sample of magnetic material within the gap. An optics module is configured to expose a test region of the magnetic material sample to an optical beam probe while the test region is subjected to the field and to receive a reflected beam from the test region. A processor is coupled to the optics module and configured to measure one or more properties of the magnetic material using the received reflected beam. | ||||||
| 122 | Method and apparatus for reading a clock track with a magneto-optical clock head using the transverse Kerr effect | US09430614 | 1999-10-29 | US06751044B1 | 2004-06-15 | Steven W. Meeks; Richard D. LeSage; David S. McMurtrey; Peter R. Svendsen; W. Craig Tomalty |
| A magneto-optical clock head is disclosed. The magneto-optical clock head allows a longitudinally recorded clock track to be read from a disk surface from a position outside of a head-disk assembly (HDA). The clock track has sections of alternating magnetization which define transitions. Importantly, the magneto-optical clock head is used to sense the transitions using the transverse Kerr effect, as opposed to the longitudinal Kerr effect as used in one prior technique. In one embodiment, the magneto-optical clock head includes a light source for generating a p-polarized beam which is aligned in such a manner that it strikes the clock track. A reflected beam is then produced which has an intensity that varies based upon the direction of the magnetization of the sections of alternating magnetization of the clock track due to the transverse Kerr effect. A detector is provided to detect the intensity variations in the reflected beam and to ultimately generate a clock signal which is provided to transducers to allow them to appropriately write servo information onto their respective disk surfaces. A method for optically reading a clock signal stored within a clock track which is written onto a disk surface that is located within a head disk assembly of a disk drive is also provided. | ||||||
| 123 | Method and apparatus for performing magnetic field measurements using magneto-optic kerr effect sensors | US474692 | 1995-06-07 | US5631559A | 1997-05-20 | Steven A. Oliver; Charles A. DiMarzio |
| A sensor system includes a magneto-optic Kerr effect magnetic field sensing element and an optical system including a light source, at least one polarizer or polarizing element and a detector disposed about the sensing element. The sensing element is responsive to an external magnetic field. In one embodiment, the optical system and sensing element can be arranged to measure the strength of a magnetic field. In another embodiment the optical system and sensing element can be arranged to measure the rotational speed of rotating members. | ||||||
| 124 | Lightwave phase control for reduction of resonator fiber optic gyroscope Kerr effect error | US209510 | 1994-03-10 | US5465149A | 1995-11-07 | Lee J. Strandjord; Glen A. Sanders |
| An error reducer for reducing rotation rate errors arising because of an optical Kerr effect occurring in a coiled optical fiber in a rotation sensor. Through amplitude modulating electromagnetic waves propagating in that coil. A signal obtained from the coil based on the amplitude modulation component therein is used in a feedback loop to reduce or eliminate such errors. | ||||||
| 125 | Technique of reducing the Kerr effect and extending the dynamic range in a Brillouin fiber optic gyroscope | US23672 | 1993-02-26 | US5351252A | 1994-09-27 | Keiichiro Toyama; Byoung Y. Kim; Shangyuan Huang; Herbert J. Shaw |
| A Brillouin fiber optic gyroscope having a feedback system which monitors the difference between counterpropagating Brillouin intensities and utilizes this difference in the form of a correction signal to control one of the circulating pump intensities so as to equalize the circulating pump intensities. The Brillouin fiber optic gyroscope further includes a second feedback system which detects electrical signals proportional to the phase-modulated, counterpropagating intensities in the gyroscope, and utilizes a combination of the electrical signals as an error signal to stabilize the resonant cavity at a length substantially equal to a length midway between the resonant lengths of the counterpropagating pump signals. The Brillouin fiber optic gyroscope of the present invention also provides a dynamic range of the gyroscope rotation rate that is twice the dynamic range of existing gyroscopes. | ||||||
| 126 | Synchronous optical regenerator using intensity modulation and phase modulation by the crossed kerr effect | US09810251 | 2001-03-19 | US07050722B2 | 2006-05-23 | Olivier Leclerc; Emmanuel Desurvire |
| A synchronous optical regenerator applies intensity modulation and phase modulation. The phase modulation is effected after the intensity modulation by the crossed Kerr effect in a Kerr fiber. The clock used for the phase modulation is obtained by injecting a continuous wavelength into the intensity modulator. The regenerator therefore includes a multiplexer coupling continuous light with the signals transmitted, an intensity modulator modulating the signals transmitted and the continuous light, and a Kerr fiber phase modulating the transmitted signals by crossed phase modulation with the intensity-modulated continuous light. Applications include wavelength division multiplex transmission systems. | ||||||
| 127 | Apparatus and method for measuring instantaneous power using a magneto-optic Kerr effect sensor | US948431 | 1997-10-10 | US5994898A | 1999-11-30 | Charles A. DiMarzio; Steven A. Oliver; Stephen W. McKnight |
| An apparatus and method for measuring instantaneous power using a magneto-optic Kerr effect sensor are disclosed. The apparatus comprises and the method requires a magneto-optic Kerr effect magnetic field sensing element and an optical system including a light source, first and second polarizers, and a photoconductive detector. In a preferred embodiment, the sensing element and the optical system are arranged to sense the intensity of a magnetic field generated by current passing through a high voltage power line so as to provide an optical signal that is representative of the current to the photoconductive detector. A voltage signal is tapped off of the high voltage power line to provide a bias signal to the photoconductive detector. The photoconductive detector thereby effectively multiplies the optical current signal with the voltage signal so as to provide a photoconductive detector current signal that is proportional to instantaneous power passing through the high voltage power line. | ||||||
| 128 | Optical communication system using phase conjugation | EP07020603.2 | 1996-10-16 | EP1876738A2 | 2008-01-09 | Watanabe, Shigeki |
An optical communication system which uses optical phase conjugation to compensate for chromatic dispersion and optical Kerr effect. The optical communication system includes a first fiber, a phase conjugator, and a second fiber. The first fiber transmits a light signal therethrough, and is a polarization maintaining fiber. The light signal is a linear polarized wave. The.phase conjugator receives the light signal from the first fiber and produces a corresponding phase conjugate light signal. The second fiber receives the phase conjugate light signal from the phase conjugator and transmits the phase conjugate light signal therethrough. A wavelength division multiplexing optical communication system is also provided which uses optical phase conjugation to compensate for dispersion and optical Kerr effect.
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| 129 | Modulateur électro-optique intégré hybride du type à effet Pockels | EP99400760.7 | 1999-03-29 | EP0961154A1 | 1999-12-01 | Bosc, Dominique; Benech, Pierre; Tedjini, Smail; Morand, Alain |
Modulateur électro-optique à effet Pockels comportant un guide optique à coeur (2) en un matériau amorphe minéral, sur lequel est superposée une structure qui comporte deux couches (3, 6) formant électrode entre lesquelles est interposé un polymère (4) électro-optique, caractérisé en ce que ladite structure est directement superposée au matériau de coeur (2) du guide optique. Les transitions entre les zones actives et passives sont avantageusement adaptées pour minimiser les pertes. |
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| 130 | Régénérateur optique synchrone par modulation d'intensité et modulation de phase par effet Kerr croisé | EP01400466.7 | 2001-02-22 | EP1137208B1 | 2009-11-25 | Leclerc, Olivier; Desurvire, Emmanuel |
| 131 | Optical communication system using phase conjugation | EP07020603.2 | 1996-10-16 | EP1876738A3 | 2008-11-26 | Watanabe, Shigeki |
An optical communication system which uses optical phase conjugation to compensate for chromatic dispersion and optical Kerr effect. The optical communication system includes a first fiber, a phase conjugator, and a second fiber. The first fiber transmits a light signal therethrough, and is a polarization maintaining fiber. The light signal is a linear polarized wave. The.phase conjugator receives the light signal from the first fiber and produces a corresponding phase conjugate light signal. The second fiber receives the phase conjugate light signal from the phase conjugator and transmits the phase conjugate light signal therethrough. A wavelength division multiplexing optical communication system is also provided which uses optical phase conjugation to compensate for dispersion and optical Kerr effect.
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| 132 | Régénérateur optique synchrone par modulation d'intensité et modulation de phase par effet Kerr croisé | EP01400466.7 | 2001-02-22 | EP1137208A1 | 2001-09-26 | Leclerc, Olivier; Desurvire, Emmanuel |
L'invention concerne une régénérateur optique synchrone, qui assure une modulation d'intensité et une modulation de phase. Selon l'invention, la modulation de phase est effectuée après la modulation d'intensité, par effet Kerr croisé dans une fibre Kerr. L'horloge utilisée pour la modulation de phase est obtenue en injectant une longueur d'onde continue dans le modulateur d'intensité. Le régénérateur comprend donc un multiplexeur (2) couplant avec les signaux transmis une lumière continue, un modulateur d'intensité (6) modulant les signaux transmis et la lumière continue et une fibre Kerr (10) modulant en phase les signaux transmis par modulation de phase croisée avec la lumière continue modulée en intensité. L'invention s'applique notamment aux systèmes de transmission à multiplexage en longueur d'onde. |
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| 133 | Method of amplifying magneto-optical kerr effect by using photon crystal structures, and photon crystal having amplified magneto-optical kerr effect, method of fabricating photon crystal | US13690749 | 2012-11-30 | US09110316B2 | 2015-08-18 | Andrey Anatolevich Eliseev; Nina Aleksandrovna Sapoletova; Kirill Sergeevich Napolskiy; Andrey Anatolevich Grunin; Andrey Anatolevich Fedyanin |
| A method of amplifying a magneto-optical Kerr effect by using photon crystal structures, and a photon crystal having an amplified magneto-optical Kerr effect, and a method of fabricating the photon crystal. The method of amplifying a magneto-optical Kerr effect by using photon crystal structures includes amplifying the magneto-optical Kerr effect by fabricating a magnetic photon crystal including a crystal magnet and using a periodically-structured surface of the crystal magnet. | ||||||
| 134 | METHOD OF AMPLIFYING MAGNETO-OPTICAL KERR EFFECT BY USING PHOTON CRYSTAL STRUCTURES, AND PHOTON CRYSTAL HAVING AMPLIFIED MAGNETO-OPTICAL KERR EFFECT, METHOD OF FABRICATING PHOTON CRYSTAL | US13690749 | 2012-11-30 | US20130141773A1 | 2013-06-06 | Andrey Anatolevich ELISEEV; Nina Aleksandrovna SAPOLETOVA; Kirill Sergeevich NAPOLSKIY; Andrey Anatolevich GRUNIN; Andrey Anatolevich FEDYAKIN |
| A method of amplifying a magneto-optical Kerr effect by using photon crystal structures, and a photon crystal having an amplified magneto-optical Kerr effect, and a method of fabricating the photon crystal. The method of amplifying a magneto-optical Kerr effect by using photon crystal structures includes amplifying the magneto-optical Kerr effect by fabricating a magnetic photon crystal including a crystal magnet and using a periodically-structured surface of the crystal magnet. | ||||||
| 135 | Liquid crystal display exhibiting Kerr effect comprising electrodes having combtooth portions that include a first convex surface with a ridge shape | US13241358 | 2011-09-23 | US08854585B2 | 2014-10-07 | Yuko Kizu; Rei Hasegawa; Hajime Yamaguchi |
| According to one embodiment, a liquid crystal display includes a liquid crystal layer exhibiting Kerr effect, a first electrode including combtooth portions, a second electrode, and protruding portions facing a main surface of the liquid crystal layer with at least one of the first and second electrodes interposed therebetween. The combtooth portions each extends in a first direction and are arranged in a second direction. The second electrode includes a portion that faces the main surface and is positioned in a gap between the combtooth portions or faces the main surface with the gap interposed therebetween. The protruding portions each extends in the first direction and are arranged in the second direction. Each of the first protruding portions forms a convex surface having a ridge shape on a surface of the combtooth portion or a surface of the portion of the second electrode positioned at the gap. | ||||||
| 136 | Optical communication system using optical phase conjugation to suppress waveform distortion caused by chromatic dispersion and optical Kerr effect | US10004789 | 2001-12-07 | US06626592B2 | 2003-09-30 | Shigeki Watanabe |
| An optical communication system which uses optical phase conjugation to compensate for chromatic dispersion and optical Kerr effect. The optical communication system includes a first fiber, a phase conjugator, and a second fiber. The first fiber transmits a light signal therethrough, and is a polarization maintaining fiber. The light signal is a linear polarized wave. The phase conjugator receives the light signal from the first fiber and produces a corresponding phase conjugate light signal. The second fiber receives the phase conjugate light signal from the phase conjugator and transmits the phase conjugate light signal therethrough. A wavelength division multiplexing optical communication system is also provided which uses optical phase conjugation to compensate for dispersion and optical Kerr effect. | ||||||
| 137 | Optical communication system using optical phase conjugation to suppress waveform distortion caused by chromatic dispersion and optical kerr effect | US09660471 | 2000-09-12 | US06341026B1 | 2002-01-22 | Shigeki Watanabe |
| An optical communication system which uses optical phase conjugation to compensate for chromatic dispersion and optical Kerr effect. The optical communication system includes a first fiber, a phase conjugator, and a second fiber. The first fiber transmits a light signal therethrough, and is a polarization maintaining fiber. The light signal is a linear polarized wave. The phase conjugator receives the light signal from the first fiber and produces a corresponding phase conjugate light signal. The second fiber receives the phase conjugate light signal from the phase conjugator and transmits the phase conjugate light signal therethrough. A wavelength division multiplexing optical communication system is also provided which uses optical phase conjugation to compensate for dispersion and optical Kerr effect. | ||||||
| 138 | Magneto-optical recording medium having protective film with increased kerr effect and improved protection characteristic and manufacturing method of the same | US466947 | 1990-01-18 | US5009762A | 1991-04-23 | Yoshinori Maeno; Masanobu Kobayashi; Kayoko Oishi |
| A magneto-optical recording medium includes one selected from a compound of strontium titanate (SrTiOx), a compound of barium titanate (BaTiOx), a nitrogen compound of strontium titanate (SrTiOxNy), and a nitrogen compound of barium titanate (BaTiOxNy). The magneto-optical recording medium has a large value for the refractive index n and a small value for the extinction coefficient k; moreover, the medium is resistive against corrosions. For the magneto-optical recording medium, there is produced a protective film by simultaneously sputtering a film forming target and a composition adjusting target. The deposition of the protective film is achieved in a mixed atmosphere of an inert gas and oxygen or in a mixed gas of an inert gas and nitrogen. | ||||||
| 139 | Optical communication system using optical phase conjugation to suppress waveform distortion caused by chromatic dispersion and optical kerr effect | US08724650 | 1996-10-01 | US06175435B1 | 2001-01-16 | Shigeki Watanabe |
| An optical communication system which uses optical phase conjugation to compensate for chromatic dispersion and optical Kerr effect. The optical communication system includes a first fiber, a phase conjugator, and a second fiber. The first fiber transmits a light signal therethrough, and is a polarization maintaining fiber. The light signal is a linear polarized wave. The phase conjugator receives the light signal from the first fiber and produces a corresponding phase conjugate light signal. The second fiber receives the phase conjugate light signal from the phase conjugator and transmits the phase conjugate light signal therethrough. A wavelength division multiplexing optical communication system is also provided which uses optical phase conjugation to compensate for dispersion and optical Kerr effect. | ||||||
| 140 | Magneto-optical recording medium having protective film with increased Kerr effect and improved protection characteristic and manufacturing method of the same | US376591 | 1989-07-07 | US4950547A | 1990-08-21 | Yoshinori Maeno; Masanobu Kobayashi; Kayoko Oishi |
| A magneto-optical recording medium includes one selected from a compound of strontium titanate (SrTiOx), a compound of barium titanate (BaTiOx), a nitrogen compound of strontium titanate (SrTiOxNy), and a nitrogen compound of barium titanate (BaTiOxNy). The magneto-optical recording medium has a large value for the refractive index n and a small value for the extinction coefficient k; moreover, the medium is resistive against corrosions. For the magneto-optical recording medium, there is produced a protective film by simultaneously sputtering a film forming target and a composition adjusting target. The deposition of the protective film is achieved in a mixed atmosphere of an inert gas and oxygen or in a mixed gas of an inert gas and nitrogen. | ||||||
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