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11. 发明公开

EP1686415A1 WAVELENGTH CONVERSION ELEMENT HAVING MULTI-GRATING AND LIGHT GENERATING DEVICE USING IT, AND WAVELENGTH CONVERSION ELEMENT HAVING COLUMNAR FERROELECTIC SINGLE CRYSTAL AND LIGHT GENERATING DEVICE USING IT 审中-公开
标题翻译：配合多种栅和光产生装置波长实现元素及其与COLUMNAREM FERRO电单晶的光产生装置波长实现元素
公开(公告)号：EP1686415A1
公开(公告)日：2006-08-02
申请号：EP04799855.4
申请日：2004-11-19
申请人： National Institute for Materials Science
发明人： KITAMURA, Kenji , KURIMURA, Sunao , NAKAMURA, Masaru , TAKEKAWA, Shunji
IPC分类号： G02F1/37
CPC分类号： G02F1/37 , G02F2001/3507 , G02F2001/3548 , G02F2202/20
摘要： A wavelength conversion element having multi-gratings free from damage propagation and a light generating apparatus using it, and a wavelength conversion element having multi-gratings to make a thermal distribution centrosymmetric, and being free from damage propagation, are provided.
The wavelength conversion element is realized by comprising a holder and plural prismatic ferroelectric single crystals disposed in the holder, wherein plural prismatic ferroelectric single crystals have at least five planes; the aspect ratios of planes perpendicular to respective longitudinal directions of the plural prismatic ferroelectric single crystals are virtually unity; and each of the plural prismatic ferroelectric single crystals has a domain inversion structure with a predetermined period in the direction perpendicular to the polarization direction thereof, and is arranged in a way that said direction perpendicular to the polarization direction is the same as those of the other crystals.
In addition, the element is realized by selecting ferroelectric material from a group comprising lithium niobate, lithium tantalate, impurity-doped lithium niobate, and impurity-doped lithium tantalate, each with virtually stoichiometric composition, and processing it into the cylindrical ferroelectric single crystal with a virtually completely round cross-section.
摘要翻译：具有多光栅的波长变换元件从损伤扩展和光发生装置释放使用它，并且，提供了具有多光栅，使热分布中心对称，并且不同于损伤扩展自由的波长转换元件。波长转换元件通过包括支架和在支架处理完毕的多个棱柱状铁电单晶，worin多个棱柱形铁电单晶具有至少五个平面实现; 平面的纵横比垂直于respectivement多个棱柱形铁电单晶的长边方向几乎统一; 且每个所述多个棱柱形铁电单晶的具有在垂直于其极化方向的方向上的预定周期的极化反转结构，并且在某种程度上说垂直于偏振方向的方向是相同的其他的布置晶体。此外，该元件是通过从一组中选择铁电材料包括铌酸锂，钽酸锂，杂质掺杂的铌酸锂，和掺杂杂质的钽酸锂，每个具有几乎化学计量的组合物，并且加工成筒状铁电体单晶与实现几乎完全呼叫roundcross截面。

12. 发明公开

EP1684112A1 POLARIZATION INVERTING METHOD USING DEFECT DENSITY CONTROL OR LATTICE POINT ORDER CONTROL, AND LIGHT WAVELENGTH CONVERSION ELEMENT 有权
标题翻译：极化反转进程通过使用缺陷密度的控制或格点顺序控制和光波长转换元件
公开(公告)号：EP1684112A1
公开(公告)日：2006-07-26
申请号：EP04799706.9
申请日：2004-11-10
申请人： National Institute for Materials Science
发明人： KITAMURA, Kenji, Nat. Inst. for Material Sciences , KURIMURA, Sunao, Nat. Inst. for Material Sciences , NAKAMURA, Masaru, Nat. Inst. for Material Sciences , TAKEKAWA, Shunji, Nat. Inst. for Material Sciences , TERABE, Kazuya, Nat. Inst. for Material Sciences , HISHITA, S., Nat. Inst. for Material Sciences , SHIMURA, Tamak, Nat. Inst. for Material Sciences
IPC分类号： G02F1/37
CPC分类号： G02F1/3558 , G02F2202/20
摘要： A problem to be solved is to provide a method of forming domain inverted regions of short period in a ferroelectric single crystal in a controllable time period of application of voltage and an optical wavelength conversion element using the same.
A solving means of it solves the problem by forming (i) a control layer having a larger defect density D cont1 than the defect density D ferro of a ferroelectric single crystal (D ferro cont1 ) or forming (ii) a control layer having a lower degree of order of lattice points than the degree of order of lattice points of the ferroelectric single crystal on a face perpendicular to the direction of polarization of the ferroelectric single crystal in the ferroelectric single crystal.
摘要翻译：一个问题，要解决的问题是提供在施加电压的可控制的时间段，并使用相同的光波长变换元件成形周期短的域反转区域中的强电介质单晶的方法。它的一个解决手段由问题形成（i）具有比铁电体单晶的缺陷密度D铁的较大缺陷密度D CONT1（D铁

13. 发明公开

EP1536273A1 Polarization-independent electro-optic modulator 审中-公开
标题翻译： PolarisationsunabhängigerElektrooptischer调制器
公开(公告)号：EP1536273A1
公开(公告)日：2005-06-01
申请号：EP03405840.4
申请日：2003-11-25
申请人： C.S.E.M. CENTRE SUISSE D'ELECTRONIQUE ET DE MICROTECHNIQUE SA
发明人： Gubler, Ulrich
IPC分类号： G02F1/21 , G02F1/061
CPC分类号： G02F1/21 , G02F1/061 , G02F2202/20 , G02F2203/06
摘要： A device (1) and method for modulating the phase or the amplitude of a light beam (91) is presented. Off-diagonal tensor elements of the electro-optic response of an active material (5) are used. An electric field is applied along the propagation direction (z) of the light, and a refractive-index change in the active material (5) occurs in the perpendicular direction (x,y). A cavity of the Fabry-Perot type limited by two mirrors (41, 42) is employed to increase the optical interaction length and to transform phase into amplitude change in the case of amplitude modulation. The modulation is independent of the light polarization. The device (1) is manufacturable simply and at low costs, and provides large apertures. Modulation frequencies in the GHz range are possible.
摘要翻译：提出了一种用于调制光束（91）的相位或幅度的装置（1）和方法。使用活性材料（5）的电光响应的非对角张量元素。沿着光的传播方向（z）施加电场，并且在垂直方向（x，y）上发生活性物质（5）的折射率变化。采用由两个反射镜（41,42）限制的法布里 - 珀罗型的腔体来增加光学相互作用长度，并且在幅度调制的情况下将相位变换成幅度变化。调制与光极化无关。设备（1）可以简单且低成本地制造，并提供大的孔。 GHz范围内的调制频率是可能的。

14. 发明授权

EP1224492B1 TITANIUM-INDIFFUSION WAVEGUIDES 有权
标题翻译： TITAN扩散波导
公开(公告)号：EP1224492B1
公开(公告)日：2003-09-24
申请号：EP99967101.9
申请日：1999-11-10
申请人： California Institute of Technology
发明人： BURROWS, Lee, J.
IPC分类号： G02B6/13 , G02F1/035
CPC分类号： C30B15/00 , C30B29/30 , G02B6/1342 , G02B6/1345 , G02B2006/12169 , G02F1/035 , G02F2201/07 , G02F2202/20
摘要： A method for fabricating titanium-indiffusion waveguides in optical modulators and other optical waveguide devices includes disposing titanium strips in a waveguide pattern on the surface of a crystalline substrate, such as lithium niobate or lithium tantalate, and indiffusing the titanium atoms into the crystalline substrate by pressurizing above ambient atmospheric pressure an oxygen gas atmosphere enclosing the crystalline substrate, heating in the oxygen gas atmosphere, maintaining temperature and pressure for an indiffusion period, and cooling to ambient temperature. A powder formed of the same chemical composition as the crystalline substrate may be introduced into the indiffusion process to limit the crystalline substrate from outgassing alkaline earth metal oxide during the indiffusion period. An indiffusion container that allows for crystalline substrates to be annealed in the presence of a powder without contaminating the substrate with the powder during the indiffusion process may be used. Waveguides manufactured in accordance with the method exhibit superior drift performance.

15. 发明授权

EP1078296B1 METHOD FOR PRESSURIZED ANNEALING OF LITHIUM NIOBATE OR TANTALATE AND RESULTING LITHIUM NIOBATE OR TANTALATE STRUCTURES 有权
标题翻译：方法进行回火下压力的铌酸锂或铌酸锂而这样产生OR 锂结构
公开(公告)号：EP1078296B1
公开(公告)日：2003-09-10
申请号：EP99948027.0
申请日：1999-05-11
申请人： California Institute of Technology
发明人： BURROWS, Lee, J.
IPC分类号： C30B33/02 , G02B6/13 , G02F1/03
CPC分类号： G02F1/035 , C30B15/00 , C30B29/30 , G02B6/1345 , G02B2006/12169 , G02F2201/07 , G02F2202/20 , Y10T117/1052
摘要： In one aspect of the invention, a method for pressurized annealing of lithium niobate or lithium tantalate structures, such as optical modulators and optical wave guides, comprises pressurizing an oxygen atmosphere containing a lithium niobate or lithium tantalate structure above normal atmospheric pressure, heating the structure to a temperature ranging from about 150 degrees Celsius to about 1000 degrees Celsius, maintaining pressure and temperature to effect ion exchange or to relieve stress, and cooling the structure to an ambient temperature at an appropriate ramp down rate. In another aspect of the invention a lithium niobate structure such as an optical waveguide or an optical modulator comprises an optically transparent portion that is substantially void of free protons.

16. 发明公开

EP1176458A3 Optical waveguide element 有权
标题翻译： Optisches Wellenleiter-Element
公开(公告)号：EP1176458A3
公开(公告)日：2003-03-19
申请号：EP01306436.5
申请日：2001-07-26
申请人： NGK INSULATORS, LTD.
发明人： Kondo, Atsuo , Kondo, Jungo , Kozuka, Yoshinari , Matsuzawa, Soichiro
IPC分类号： G02F1/355 , G02F1/37 , G02F1/03 , G02F1/377
CPC分类号： G02F1/3558 , G02F1/035 , G02F1/3551 , G02F1/3775 , G02F2202/20
摘要： An optical waveguide element (6) has a substrate (7) made of a lithium tantalate single crystal or a lithium niobate-lithium tantalate solid solution single crystal and a bulky optical waveguide (8) made of a lithium niobate single crystal directly joined the substrate. The c-axis of the single crystal to constitute the substrate is tilted from the surface of the substrate to be joined preferably by 17-37 degrees.
摘要翻译：光波导元件（6）具有由钽酸锂单晶或铌酸锂 - 钽酸锂固溶体单晶构成的基板（7）和由直接接合在基板上的铌酸锂单晶构成的体积大的光波导（8）。构成基板的单晶的c轴从被接合的基板的表面倾斜优选为17-37度。

17. 发明授权

EP1043617B1 Optical waveguide device with enhanced stability 有权
标题翻译：的光波导器件具有增强的稳定性
公开(公告)号：EP1043617B1
公开(公告)日：2003-01-08
申请号：EP00302815.6
申请日：2000-04-04
申请人： Agere Systems Optoelectronics Guardian Corporation
发明人： Johnston, Wilbur Dexter, Jr. , Minford, William James , Osenbach, John William
IPC分类号： G02F1/00 , G02F1/035 , C30B29/30
CPC分类号： G02F1/035 , G02F1/0018 , G02F2202/20 , G02F2203/21

18. 发明授权

EP0610440B1 AN IMPROVED OPTICAL ISOLATOR 失效
标题翻译：改进的光学隔离器
公开(公告)号：EP0610440B1
公开(公告)日：2000-05-24
申请号：EP92925026.4
申请日：1992-10-27
申请人： E-TEK DYNAMICS, INC.
发明人： PAN, Jing-Jong
IPC分类号： G02B6/32 , G02B6/42 , G02F1/09
CPC分类号： G02B6/2746 , G02B6/32 , G02B6/3822 , G02B6/4208 , G02F1/093 , G02F2202/20

19. 发明授权

EP0844511B1 Optical wavelength converting device for second harmonic generation 失效
标题翻译：用于产生二次谐波的光波长转换装置
公开(公告)号：EP0844511B1
公开(公告)日：1999-12-15
申请号：EP98102389.8
申请日：1993-10-07
申请人： MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
发明人： Mizuuchi, Kiminori , Yamamoto, Kazuhisa
IPC分类号： G02F1/35 , G02F1/37
CPC分类号： G02F1/3558 , G02F1/03 , G02F1/3775 , G02F2001/3546 , G02F2001/3548 , G02F2201/346 , G02F2202/20 , Y10T29/49016
摘要： An optical wavelength converting device is provided with a LiTaO3 substrate, a plurality of inverted-polarization layers periodically arranged in an upper surface of the LiTaO3 substrate, and an optical waveguide crossing the inverted-polarization layers. The upper surface of the LiTaO3 substrate is directed toward a -X-crystal axis direction. The inverted-polarization layers are formed by exchanging Ta ions of the LiTaO3 substrate for H ions, and an extending direction of each inverted-polarization layer is inclined at an angle of theta degrees (6 ions of the LiTaO3 substrate and the inverted-polarization layers for H ions to set a refractive index of the optical waveguide higher than that of the LiTaO3 substrate. The optical waveguide extends in a +Y-crystal axis direction. Fundamental waves polarized in a transverse electric mode induce electric field directed in +/-Y-crystal axis directions and are converted into second harmonic waves in the optical waveguide.

20. 发明公开

EP0938017A1 Acousto-optical tunable filters cascaded together 有权
标题翻译： Optische Filterungsvorrichtung beruhend auf hintereinander angeordneten akustooptisch abstimmbaren Filtern
公开(公告)号：EP0938017A1
公开(公告)日：1999-08-25
申请号：EP99102744.2
申请日：1999-02-19
申请人： FUJITSU LIMITED
发明人： Nakazawa, Tadao , Onaka, Hiroshi , Seino, Minoru
IPC分类号： G02F1/125
CPC分类号： G02F1/113 , G02F1/116 , G02F1/125 , G02F2201/16 , G02F2202/20
摘要： A configuration of acousto-optical tunable filters (AOTF) having stable output characteristics so that the output does not significantly vary with time. The configuration includes a plurality of AOTFs cascaded together. Each AOTF generates a surface acoustic wave in an optical waveguide in accordance with RF signals applied to the AOTF. A phase of a beat generated by the RF signals applied to one of the plurality of AOTFs is different from a phase of a beat generated by the RF signals applied to a different AOTF of the plurality of AOTFs.
摘要翻译：具有稳定输出特性的声光可调谐滤波器（AOTF）的配置，使得输出不随时间显着变化。该配置包括多个级联在一起的AOTF。每个AOTF根据施加到AOTF的RF信号在光波导中产生声表面波。由施加到多个AOTF中的一个的RF信号产生的拍子的相位与由施加到多个AOTF的不同AOTF的RF信号产生的拍子的相位不同。

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