| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 21 | Fiber laser device | JP2010052851 | 2010-03-10 | JP5371838B2 | 2013-12-18 | 康弘 大庭; 道弘 中居 |
| A fiber laser device capable of restraining variations of the rise time of output laser light while shortening the rise time of the output laser light is provided. A fiber laser device (100) includes a seed laser light source (10), a pumping light source (20), an amplification optical fiber (30), a control unit (60), and an output instructing unit (65). When an output instruction is input to the control unit (60), the control unit (60) controls the seed laser light source (10) and the pumping light source (20) to be either in a pre-pumped state or in an output state. In the pre-pumped state, the pumping light source (20) outputs, for a predetermined period, pumping light with an intensity determined based on the duration of the period of time from when the output state prior to the input of the output instruction to the control unit (60) comes to an end till when the output instruction is input to the control unit (60). In the output state, to cause the output unit (50) to output laser light, the seed laser light source (10) outputs laser light, and the pumping light source (20) outputs pumping light. | ||||||
| 22 | Dynamic gain equalizer | JP2002570450 | 2002-03-08 | JP4424908B2 | 2010-03-03 | コーエン、ギル; コレム、ヨッシ; スー、セオングウォー |
| 23 | OPTOELECTRONIC DEVICE FOR GENERATION A FREQUENCY COMB | US15923571 | 2018-03-16 | US20180307118A1 | 2018-10-25 | Corrado SCIANCALEPORE; Marco CASALE; Houssein EL DIRANI |
| The invention relates to an optoelectronic device for generating a frequency comb comprising a laser source (2), a ring microresonator (3) comprising a resonant ring (20) made of a third order optically non-linear material with abnormal dispersion regime. It also comprises a spectral tuning device comprising a junction guide (30) coupled to the resonant ring, electrical biasing means (40) adapted to apply an electrical voltage to the junction, and a control unit (42) adapted to modify the value of the electrical voltage until at least one dissipative temporal soliton is formed in the resonant ring. | ||||||
| 24 | Optical amplifier, optical amplifying system, wavelength converter, optical amplification method, and optical communication system | US14018225 | 2013-09-04 | US09270076B2 | 2016-02-23 | Shigehiro Takasaka; Yu Mimura |
| An optical amplifier includes an optical gain fiber into which signal light and pump light are input and at least one relative phase shifter is inserted. Preferably, the relative phase shifter is inserted so that the relative phase in the lengthwise direction of the optical gain fiber falls within a predetermined range containing 0.5π. Preferably, the optical gain fiber is a highly non-linear optical fiber having a non-linearity constant of at least 10/W/km. Preferably, the dispersion of the optical gain fiber is within the range from −1 ps/nm/km to 1 ps/nm/km in an amplification band. Preferably, the absolute value of the dispersion slope of the optical gain fiber at a zero dispersion wavelength is no greater than 0.05 ps/nm2/km. | ||||||
| 25 | Devices and methods for optical signal control | US12401779 | 2009-03-11 | US08792159B2 | 2014-07-29 | Zeev Zalevsky; Arkady Rudnitsky |
| A device for use in optical signal control is presented. The device comprises an amplification waveguide, including a pumpable medium, and a reference and a control inputs and an output selectively allowing transmission of light respectively into and out of said amplification waveguide. The reference input, the amplification waveguide and the output define together a transmission scheme for reference light through the pumpable medium. The control input and the amplification waveguide define a depletion scheme for the pumpable medium and control light. The device thus allows for controlling an output signal, formed by the transmission of the reference light, by controllable depletion of the pumpable medium. | ||||||
| 26 | OPTICAL AMPLIFIER, OPTICAL AMPLIFYING SYSTEM, WAVELENGTH CONVERTER, OPTICAL AMPLIFICATION METHOD, AND OPTICAL COMMUNICATION SYSTEM | US14018225 | 2013-09-04 | US20140043674A1 | 2014-02-13 | Shigehiro TAKASAKA; Yu Mimura |
| An optical amplifier includes an optical gain fiber into which signal light and pump light are input and at least one relative phase shifter is inserted. Preferably, the relative phase shifter is inserted so that the relative phase in the lengthwise direction of the optical gain fiber falls within a predetermined range containing 0.5 Π. Preferably, the optical gain fiber is a highly non-linear optical fiber having a non-linearity constant of at least 10/W/km. Preferably, the dispersion of the optical gain fiber is within the range from −1 ps/nm/km to 1 ps/nm/km in an amplification band. Preferably, the absolute value of the dispersion slope of the optical gain fiber at a zero dispersion wavelength is no greater than 0.05 ps/nm2/km. | ||||||
| 27 | Fiber laser device | US13606235 | 2012-09-07 | US08649403B2 | 2014-02-11 | Yasuhiro Oba; Michihiro Nakai |
| When an output instruction is input to a control unit, the control unit controls a seed laser light source and a pumping light source to be either in a pre-pumped state or in an output state. In the pre-pumped state, the pumping light source outputs, for a predetermined period, pumping light with an intensity determined based on the duration of the period of time from when the output state prior to the input of the output instruction to the control unit comes to an end till when the output instruction is input to the control unit. In the output state, to cause the output unit to output laser light, the seed laser light source outputs laser light, and the pumping light source outputs pumping light. | ||||||
| 28 | Tuneable Optical Amplifier or Optical Parametric Oscillator | US12707401 | 2010-02-17 | US20100265570A1 | 2010-10-21 | Stuart Murdoch |
| A parametric process for producing light at a second wavelength and a fourth wavelength including pumping an optical parametric oscillator with input light at a first wavelength of less than one micron, wherein said oscillator consists of an optical fibre having each end closed by a dichroic mirror. | ||||||
| 29 | Fiber optical attenuator | US10657743 | 2003-09-05 | US07010211B2 | 2006-03-07 | Gil Cohen |
| A fiber optical attenuator utilizing the cut-off phenomenon for single mode propagation of an optical wave down a single mode fiber, comprising an element such as a pixelated liquid crystal element, capable of spatially changing the phase across the cross section of an input optical signal. Such a spatial phase change is equivalent to a change in the mode structure of the propagating wave. The signal propagating in the single mode output fiber is attenuated in accordance with the extent to which higher order modes are mixed into the low order mode originally present. When the mode is completely transformed to higher order modes, the wave is effectively completely blocked from entering the output single-mode fiber, and the attenuation is high. The level of attenuation is determined by the fraction of the wave which is converted to modes other than the lowest order mode, and is thus controllable by the voltage applied to the pixels of the liquid crystal element. | ||||||
| 30 | Optical switch fabricated by a thin film process | US10165087 | 2002-06-07 | US06885789B2 | 2005-04-26 | Kuo-Chuan Liu |
| An electro-optical switch is provided, that includes: a single mode optical waveguide having a thin ferroelectric oxide film for propagating a single mode of light; a coupler adjoining the single mode optical waveguide for coupling a part of the single mode of light from an optical fiber to the single mode optical waveguide; an electrically formed lens in the single mode optical waveguide for collimating the single mode of light from the coupler; and a switching module comprising another electrically formed lens in the single mode optical waveguide, for switching the single mode of light. | ||||||
| 31 | Power fiber laser with mode conversion | US10069533 | 2002-03-06 | US06834061B2 | 2004-12-21 | Jean-Pierre Huignard; Arnaud Brignon |
| A pumped-fiber laser comprising a multimode doped fiber (1) and a holographic spatial mode conversion device (3). | ||||||
| 32 | 光パラメトリック増幅器、光増幅システム、波長変換器、光増幅方法および光通信システム | JP2013503543 | 2012-03-05 | JP6133206B2 | 2017-05-24 | 高坂 繁弘; 味村 裕 |
| 33 | Semiconductor optical waveguide element and method for manufacturing semiconductor optical waveguide element | JP2013046976 | 2013-03-08 | JP2014174335A | 2014-09-22 | FURUYA AKIRA; KITAMURA TAKAMITSU; YAGI HIDEKI; KONO NAOYA |
| PROBLEM TO BE SOLVED: To provide a semiconductor optical waveguide element including a spot size converter.SOLUTION: A semiconductor optical waveguide element 81 includes a third semiconductor mesa 55 in which a 31-st mesa portion 55b has an end face 55d that can be optically coupled, located at an edge of a substrate 11. The end face 55d can be optically coupled to an external optical waveguide. As the width of the 31-st mesa portion 55b and the width of a 32-nd mesa portion 55c of the third semiconductor mesa 55 are larger than the width of a second semiconductor mesa 49 in the semiconductor optical waveguide element 81, a mode field diameter equal to or close to a mode field diameter of the external optical waveguide can be imparted to an optical waveguide relating to the third semiconductor mesa 55. The width of the second semiconductor mesa 49 is smaller than the width of the 31-st mesa portion 55b and the width of the 32-nd mesa portion 55c of the third semiconductor mesa 55; and a first core layer 41 and a second core layer 53 are optically coupled to each other. Thereby, propagation of light proceeds from the first core layer 41 to the second core layer 53 or from the second core layer 53 to the first core layer 41. | ||||||
| 34 | Dynamic gain equalizer | JP2002570450 | 2002-03-08 | JP2004528751A | 2004-09-16 | コーエン、ギル; コレム、ヨッシ; スー、セオングウォー |
| 多重チヤンネル光信号が回折格子のような分散性の素子によってその分離した波長成分に分割され、そして空間的に分離された波長成分が液晶位相素子に基づく可変光減衰器の線形アレイを通過する利得等化器が得られる。 この液晶位相素子は、光の横断面の一部分の位相の変調を行う。 他の種類の可変減衰器をまた用いることもできる。 次に、この分離されそして減衰された波長成分が再び結合され、そして出力される。 可変光減衰器のおのおのの減衰のレベルは、その波長成分の関数として光の出力により調整される。 この方法で、出力光信号の全体の波長分布は、利得等化アプリケーションにおけるような平坦化されたスペクトル分布またはスペクトル補償分布または帯域ブロッキング分布のいずれかの予め定められた任意の形式に調整することができる。 | ||||||
| 35 | Optical fiber attenuator | JP2002569992 | 2002-03-08 | JP2004522188A | 2004-07-22 | コーエン、ギル |
| シングル・モード・ファイバへの光波のシングル・モード全般についてのカット・オフ減少を使用する光ファイバ減衰器であって、ピクセル化された液晶素子のような素子を含み、この素子は入力光信号の断面を横切る位相を空間的に変更することができる。 そうした空間的位相変更は、伝播する波のモード構造における変化に等しい。 シングル・モード出力ファイバ内を伝播する信号は、一層高い次元のモードがもともと存在する低い次元のモードへ混合される範囲にしたがって減衰される。 このモードが一層高いモードへ完全に変換されるとき、この波は出力シングル・モード・ファイバへ入るのを効果的に完全にブロックされ、減衰は高い。 減衰のレベルは、最低次元のモード以外の諸モードへ変換される波の部分により決定され、こうして液晶素子のピクセルへ加えられる電圧により制御できる。 | ||||||
| 36 | FIBER LASER APPARATUS | EP11753220.0 | 2011-02-28 | EP2549597B1 | 2017-03-15 | OBA Yasuhiro; NAKAI Michihiro |
| 37 | OPTICAL AMPLIFIER, OPTICAL AMPLIFYING SYSTEM, WAVELENGTH CONVERTER, OPTICAL AMPLIFICATION METHOD, AND OPTICAL COMMUNICATION SYSTEM | EP12754607.5 | 2012-03-05 | EP2682813A1 | 2014-01-08 | TAKASAKA, Shigehiro; MIMURA, Yu |
An optical amplifier includes an optical gain fiber into which signal light and pump light are input and at least one relative phase shifter is inserted. Preferably, the relative phase shifter is inserted so that the relative phase in the lengthwise direction of the optical gain fiber falls within a predetermined range containing 0.5 n. Preferably, the optical gain fiber is a highly non-linear optical fiber having a non-linearity constant of at least 10/W/km. Preferably, the dispersion of the optical gain fiber is within the range from -1 ps/nm/km to 1 ps/nm/km in an amplification band. Preferably, the absolute value of the dispersion slope of the optical gain fiber at a zero dispersion wavelength is no greater than 0.05 ps/nm2/km. |
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| 38 | LASER A FIBRE DE PUISSANCE A CONVERSION DE MODE | EP01984196.4 | 2001-07-06 | EP1299930A1 | 2003-04-09 | HUIGNARD, Jean-PierreThales Intellectual Property; BRIGNON, ArnaudThales Intellectual Property |
| The invention concerns a pumped fibre laser comprising essentially a doped fibre (1), Said laser is mainly characterised in that the doped fibre is multimode (1) and it also comprises a spatial mode converting device (3) receiving the beam. Said multimode fibre has a core with diameter greater than 30 micrometers, even greater than 50 micrometers. | ||||||
| 39 | Electrically controllable optical element using an optical fibre | EP08020044.7 | 2008-11-17 | EP2187253A1 | 2010-05-19 | Petrov, Victor, Prof. |
An electrically controllable optical element comprising a piece of electro-optical material (3), having a surface on which a Bragg phase grating (7) having a longitudinal extension is provided, electrodes (15) which are arranged on said surface at both sides of the Bragg grating (7), and an optical fibre (5) comprising a core (9) and a cladding (11), having a portion of its longitudinal extension which is, at least in part of the fibre's circumference, free of the cladding (11), which has been partly removed such as to form a plane surface (13), wherein the fibre (5) is in optical contact with said piece of electro-optical material (3) such that its longitudinal extension matches with the longitudinal extension of the Bragg grating (7) and said portion which is free of the cladding (11) is adjacent to said surface where the Bragg grating (7) is provided, wherein a beam of optical radiation propagating along the said optical fibre (5) is controllable by means of a voltage applied to said electrodes (15). Thereby the diffraction characteristics of the interface between the Bragg grating (7) and the plane surface (13) of the core (9) pressed against the electro-optical substrate (3) is changed.
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| 40 | DYNAMIC GAIN EQUALIZER | EP02702694.7 | 2002-03-08 | EP1371156B1 | 2010-04-21 | COHEN, Gil; SUH, Seongwoo; COREM, Yossi |
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