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    • 11. 发明申请
    • SHORT PULSE MID-INFRARED PARAMETRIC GENERATOR FOR SURGERY
    • 短脉冲中红外参数发生器用于手术
    • WO98041177A1
    • 1998-09-24
    • PCT/US1998/001406
    • 1998-01-28
    • A61B18/20A61F9/007A61F9/01A61F9/013H01S3/00H01S3/06
    • A61F9/008A61F9/00814A61F2009/00872G02F1/39G02F2001/3507G02F2001/3542G02F2201/05G02F2203/15
    • A laser parametric generator for surgical applications is disclosed which utilizes short-pulse, mid-infrared radiation. The mid-infrared radiation may be produced by a pump laser source (20), such as a neodymium-doped laser, which is parametrically downconverted in a suitable nonlinear crystal (15) to the desired mid-infrared range. The short pulses reduce unwanted thermal effects and changes in adjacent to potentially submicron levels. The parametrically converted radiation source preferably produces pulse durations shorter than 25 ns at or near 3.0 mu m but preferably close to the water absorption maximum associated with the tissue. The down-conversion to the desired mid-infrared wavelength is preferably produced by a nonlinear crystal (15) such as KTP or its isomorphs. In one embodiment, a non-critically phased-matched crystal is utilized to shift the wavelength from a near-infrared laser source emitting at or around 880 to 900 nm to the desired 2.9 to 3.0 mu m wavelength range. A fiber, fiber bundle or another waveguide means utilized to separate the pump laser from the optical parametric oscillation (OPO) cavity is also included as part of the invention.
    • 公开了一种用于外科应用的激光参数发生器,其利用短脉冲,中红外辐射。 中红外辐射可以由泵浦激光源(20)产生,例如掺杂钕的激光器,其在适当的非线性晶体(15)中参数下变频到期望的中红外范围。 短脉冲减少不必要的热影响和邻近潜在亚微米级别的变化。 参数转换的辐射源优选地产生在3.0μm处或接近3.0μm时短于25ns的脉冲持续时间,但优选接近与组织相关的吸水最大值。 优选地,通过诸如KTP或其同构物的非线性晶体(15)产生向所需中红外波长的向下转换。 在一个实施例中,使用非临界相位匹配晶体将波长从发射在880nm至900nm附近的近红外激光源移动到期望的2.9至3.0μm的波长范围。 作为本发明的一部分,还包括用于将泵浦激光器与光学参数振荡(OPO)腔分离的纤维,纤维束或另一波导装置。
    • 14. 发明申请
    • OPTICAL SPATIAL MODE CONTROL
    • 光学空间模式控制
    • WO2017171961A2
    • 2017-10-05
    • PCT/US2017/012819
    • 2017-01-10
    • MASSACHUSETTS INSTITUTE OF TECHNOLOGY
    • MONTOYA, JuanRIPIN, DanielALESHIRE, ChristopherMARTZ, DaleREEVES-HALL, Peter, Colin
    • G02F1/0115G02B6/2804G02B6/2821G02B6/2826G02B6/2856G02F1/0121G02F1/29G02F2201/02G02F2201/05G02F2201/58G02F2203/24H01S3/005
    • An electro-optic beam controller, material processing apparatus, or optical amplifier, and corresponding methods, can include an actively controlled, waveguide-based, optical spatial mode conversion device. The conversion device can include a coupler, which can be a photonic lantern, configured to combine light beams into a common light beam; a sensor configured to measure at least one characteristic of the common light beam; and a controller configured to modulate optical parameters of the individual, respective light beams to set one or more spatial modes of the common light beam. Actively controlled and modulated devices can be used to maintain a stable, diffraction-limited beam for use in an amplification, communications, imaging, laser radar, switching, or laser material processing system. Embodiments can also be used to maintain a fundamental or other spatial mode in an optical fiber even while scaling to kilowatt power.
    • 电光束控制器,材料处理设备或光学放大器以及相应的方法可以包括主动控制的基于波导的光学空间模式转换装置。 转换装置可以包括耦合器,该耦合器可以是光子灯,被配置为将光束组合成共同的光束; 配置成测量所述公共光束的至少一个特性的传感器; 以及控制器,其被配置为调制各个光束的光学参数以设置共同光束的一个或多个空间模式。 可以使用有源控制和调制器件来保持稳定的衍射极限光束,用于放大,通信,成像,激光雷达,开关或激光材料处理系统。 实施例也可用于维持光纤中的基本或其他空间模式,即使在缩放至千瓦功率时也是如此。
    • 15. 发明申请
    • PROCESSING OF MULTIMODE OPTICAL SIGNALS
    • 多模光信号的处理
    • WO2016100989A3
    • 2016-08-25
    • PCT/US2015067229
    • 2015-12-21
    • UNIV CORNELL
    • STERN BRIANLIPSON MICHAL
    • H04J14/04
    • G02F1/065G02F1/011G02F1/0136G02F1/0147G02F2001/0144G02F2201/05G02F2203/15G02F2203/58G02F2203/585H04J14/04H04Q11/0001
    • This patent document provides optical processing and switching of optical channels based on mode-division multiplexing (MDM) and wavelength division multiplexing (WDM). In one implementation, a method is provided for processing different optical signal channels to include receiving different input optical signal channels in different optical waveguide modes and in different wavelengths; converting input optical signal channels in multimodes into single-mode optical signal channels, respectively; subsequent to the conversion, processing single-mode optical signal channels obtained from the different input optical signal channels to re-group single-mode optical signal channels into different groups of processed single-mode optical signal channels; and converting different groups of the processed single-mode optical signal channels into different groups of output optical signal channels containing one or more optical signal channels in multimodes multimode signals to direct the groups as different optical outputs.
    • 该专利文献提供了基于模分割复用(MDM)和波分复用(WDM)的光信道的光学处理和切换。 在一个实现中,提供了一种用于处理不同光信号通道以包括以不同光波导模式和不同波长接收不同输入光信号通道的方法; 将多模式中的输入光信号通道分别转换为单模光信号通道; 在转换后,处理从不同输入光信号通道获得的单模光信号通道,将单模光信号通道重新分组成不同组的经处理的单模光信号通道; 并将不同组的经处理的单模光信号通道转换为多模多路信号中包含一个或多个光信号通道的不同输出光信号通道组,以将组作为不同的光输出。
    • 18. 发明申请
    • 光変調素子
    • 光学调制元件
    • WO2012124830A1
    • 2012-09-20
    • PCT/JP2012/057666
    • 2012-03-16
    • 日本碍子株式会社近藤 順悟岩田 雄一江尻 哲也
    • 近藤 順悟岩田 雄一江尻 哲也
    • G02F1/035G01N21/01
    • G02F1/035G01N15/1434G02B6/122G02F1/2252G02F1/2255G02F2001/212G02F2201/05G02F2201/063G02F2201/066G02F2201/127G02F2202/28G02F2203/21G02F2203/50G02F2203/60
    • 光変調素子1は、一対の溝2b、2cおよびこれらの溝の間の突起部2dを有する支持基板2、電気光学結晶からなり、マルチモード伝搬するチャンネル型光導波路が形成されているリッジ部6、リッジ部6の一方の側に形成されており、電気光学結晶からなる第一の側板部3A、リッジ部の他方の側に形成されており、電気光学結晶からなる第二の側板部3B、第一の側板部3Aと支持基板2とを接着する第一の接着層4A、第二の側板部3Bと支持基板2とを接着する第二の接着層4B、およびリッジ部6と突起部2dとを接着する第三の接着層4Cを備える。本素子1は、更に、リッジ部の第一の溝8A側の側面6b、第一の側板部3Aの側面3bおよび第一の側板部の上面3cに設けられている第一の電極7A、および、リッジ部6の第二の溝側の側面6c、第二の溝2c、第二の側板部3Bの側面3bおよび第二の側板部3Bの上面3cに設けられている第二の電極7Bを備えている。第一の電極7Aと第二の電極7Bとの間に印加される変調電圧によってチャンネル型光導波路を伝搬する光を変調する。
    • 光调制元件(1)设置有:在所述槽之间具有一对槽(2b,2c)和突出部(2d)的支撑基板(2) 脊部(6),其包括电光晶体并且具有传播其中形成的多模光的通道光波导; 第一侧板部(3A),其形成在所述脊部(6)的一侧,并且包括电光晶体; 第二侧板部(3B),其形成在所述脊部(6)的另一侧,并且包括电光晶体; 粘附第一侧板部(3A)和支撑基板(2)的第一粘合层(4A) 粘附第二侧板部(3B)和支撑基板(2)的第二粘合层(4B) 以及粘附脊部(6)和突出部(2d)的第三粘合层(4C)。 光调制元件(1)还设置有:设置在脊部的第一凹槽(8A)侧的侧表面(6b)上的第一电极(7A),第一侧板的侧表面(3b) 第一侧板部分的部分(3A)和上表面(3c); 以及设置在所述脊部(6)的第二槽侧的侧面(6c)上的第二电极(7B),所述第二侧板部(3B)的所述侧面(3b)的第二槽(2c) 和第二侧板部(3B)的上表面(3c)。 由通道光波导传播的光由施加在第一电极(7A)和第二电极(7B)之间的调制电压调制。
    • 19. 发明申请
    • ELECTRICALLY-DRIVEN, HIGH EXTINCTION RATIO OPTICAL MODULATOR
    • 电动驱动,高放电比例光学调制器
    • WO2009022362A8
    • 2009-09-17
    • PCT/IT2007000588
    • 2007-08-14
    • SELEX SISTEMI INTEGRATI SPADISPENZA MASSIMILIANOVARASI MAURO
    • DISPENZA MASSIMILIANOVARASI MAURO
    • G02F1/225G02B6/125
    • G02F1/225G02B6/4227G02F2201/05
    • Disclosed herein is an optical modulator (1) coupled to an optical fiber (7) and providing a modulated optical signal based on the input optical signal received from the optical fiber; the optical modulator (1) is provided with an electro-optical substrate (3) and an optical waveguide structure (2) formed in the substrate (3) and having an input branch (6) coupled to the optical fiber (7), an output branch (10) outputting the modulated optical signal, and a first and a second arms (12a, 12b) branching off from the input branch (6) and merging into the output branch (10). In particular, the input branch (6) is configured so as to be at least bimodal, and the optical fiber (7) is so arranged with respect to the input branch (6) to excite a first and at least a second optical propagation mode and to provide the first and second optical propagation modes with respective given amounts of optical power, to compensate for different optical losses of the first and second arms (12a, 12b).
    • 本文公开了一种光调制器(1),其耦合到光纤(7)并且基于从光纤接收的输入光信号提供调制的光信号; 光调制器(1)设置有形成在基板(3)中并且具有耦合到光纤(7)的输入支路(6)的电光基板(3)和光波导结构(2) 输出调制光信号的输出分支(10)和从输入分支(6)分支出并合并到输出分支(10)中的第一和第二臂(12a,12b)。 特别地,输入分支(6)被配置为至少是双模的,并且光纤(7)相对于输入分支(6)被布置成这样来激发第一和至少第二光传播模式 并且提供具有各自给定量的光功率的第一和第二光传播模式,以补偿第一和第二臂(12a,12b)的不同光学损耗。
    • 20. 发明申请
    • ELECTRICALLY-DRIVEN, HIGH EXTINCTION RATIO OPTICAL MODULATOR
    • 电动驱动,高放电比例光学调制器
    • WO2009022362A1
    • 2009-02-19
    • PCT/IT2007/000588
    • 2007-08-14
    • SELEX SISTEMI INTEGRATI S.P.A.DISPENZA, MassimilianoVARASI, Mauro
    • DISPENZA, MassimilianoVARASI, Mauro
    • G02F1/225G02B6/125
    • G02F1/225G02B6/4227G02F2201/05
    • Disclosed herein is an optical modulatqr (1) coupled to an optical fiber (7) and providing a modulated optical signal based on the input optical signal received from the optical fiber; the optical modulator (1) is provided with an electro-optical substrate (3) and an optical waveguide structure (2) formed in the substrate (3) and having an input branch (6) coupled to the optical fiber (7), an output branch (10) outputting the modulated optical signal, and a first and a second arms (12a, 12b) branching off from the input branch (6) and merging into the output branch (10). In particular, the input branch (6) is configured so as to be at least bimodal, and the optical fiber (7) is so arranged with respect to the input branch (6) to excite a first and at least a second optical "propagation mode and to provide the first and second optical propagation modes with respective given amounts of optical power, to compensate for different optical losses of the first and second arms (12a, 12b).
    • 本文公开了一种耦合到光纤(7)的光学调制器(1),并且基于从光纤接收的输入光信号提供调制光信号; 光调制器(1)设置有形成在基板(3)中并且具有耦合到光纤(7)的输入支路(6)的电光基板(3)和光波导结构(2) 输出调制光信号的输出分支(10)和从输入分支(6)分支出并合并到输出分支(10)中的第一和第二臂(12a,12b)。 特别地,输入分支(6)被配置为至少是双模的,并且光纤(7)相对于输入分支(6)被布置得如此布置以激发第一和至少第二光学“传播 并且提供具有各自给定量的光功率的第一和第二光传播模式,以补偿第一和第二臂(12a,12b)的不同的光学损耗。