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    • 61. 发明申请
    • POLARIZATION DIVERSITY DETECTION USING A POLARIZATION MULTIPLEXED LOCAL OSCILLATOR
    • 使用极化多路复用局部振荡器的极化多样性检测
    • WO2004003502A1
    • 2004-01-08
    • PCT/EP2002/007198
    • 2002-06-29
    • AGILENT TECHNOLOGIES, INC.ROSENFELDT, Harald
    • ROSENFELDT, Harald
    • G01M11/00
    • G01M11/331
    • A method and an apparatus for determination of properties, e.g. of elements of the Jones matrix of an optical device under test (2), comprising the steps of: splitting an incoming light beam (6) into a first light beam (18) and a second light beam (20), coupling the first light beam (18) into the optical device under test (2), letting the second light beam (20) travel a different path as the first light beam (18), splitting the second light beam (20) into a first part and a second part, delaying the second part of the second light beam (20) relative to the first part of the second light beam (20), recombining the first and the second part of the second light beam (20), superimposing the first light beam (18) and the recombined parts of the second light beam (20) to produce interferences between the first light beam (18) and the recombined parts of the second light beam (20) in at least one resulting superimposed light beam (30), detecting the power of the at least one superimposed light beam (30) as a function of frequency and polarization when tuning the frequency of the incoming light beam (6) over a given frequency range, deriving the optical property of the optical device under test (2) from the frequency dependence of the detected powers.
    • 用于确定性质的方法和装置,例如 (2)的Jones矩阵的元件,包括以下步骤:将入射光束(6)分成第一光束(18)和第二光束(20),将第一光 光束(18)进入被测光学器件(2),使第二光束(20)作为第一光束(18)行进不同的路径,将第二光束(20)分成第一部分和第二光束 部分,相对于第二光束(20)的第一部分延迟第二光束(20)的第二部分,将第二光束(20)的第一部分和第二部分重新组合,将第一光束 18)和第二光束(20)的重组部分在至少一个所产生的叠加光束(30)中产生第一光束(18)和第二光束(20)的复合部分之间的干涉,检测 所述至少一个叠加光束(30)的功率作为频率和极化的函数 在给定频率范围内输入光束(6)的频率,根据检测到的功率的频率依赖性导出被测光学器件(2)的光学特性。
    • 62. 发明申请
    • MEASUREMENT OF POLARIZATION MODE DISPERSION
    • 极化模式分布的测量
    • WO1996036859A1
    • 1996-11-21
    • PCT/US1996007197
    • 1996-05-17
    • VOOTS, Terry, L.
    • G01J04/04
    • G01M11/336G01M11/331
    • A method is provided for high resolution measurement of Polarization Mode Dispersion (PMD) of an optic fiber (26), comprising the steps of: providing a Polarization Mode Dispersion measuring instrument with a light source (10); providing a test fiber (26); arranging the artefact (28) having a stable known Polarization Mode Dispersion value in series with the test fiber (26); transmitting light from the light source (10) through the artefact (28) and the test fiber (26); measuring a biased Polarization Mode Dispersion value with the Polarization Mode Dispersion measuring instrument biased away from a zero Polarization Mode Dispersion value; and determining the Polarization Mode Dispersion of the optic fiber from the biased measured Polarization Mode Dispersion value.
    • 提供了一种用于光纤(26)的偏振模色散(PMD)的高分辨率测量的方法,包括以下步骤:提供具有光源(10)的偏振模色散测量仪器; 提供测试光纤(26); 将具有稳定的已知极化模式色散值的人造物(28)与测试光纤(26)串联布置; 透射来自光源(10)的光穿过人造物(28)和测试光纤(26); 测量偏振极化模式色散值,偏振模色散测量仪偏离零极化模式色散值; 并从偏置的测量偏振模色散值确定光纤的偏振模色散。
    • 69. 发明专利
    • Judgment of characteristic of optical device
    • 光学设备特性的判断
    • JP2003014585A
    • 2003-01-15
    • JP2002166603
    • 2002-06-07
    • Agilent Technol Incアジレント・テクノロジーズ・インク
    • CIERULLIES JENSBRINKMEYER ERNST
    • G01J9/02G01M11/00G01M11/02
    • G01M11/331G01M11/338
    • PROBLEM TO BE SOLVED: To provide a means and a method by which the characteristic such as the group delay or the like of an optical device is measured precisely in a short time.
      SOLUTION: The method by which the characteristic of an optical device as an inspection object is judged is composed of a step in which a first initial coherent light beam is used, a step in which the initial characteristic of the first initial light beam is changed, a step in which the first initial light beam is connected to the inspection object, a step in which the first signal of the first initial light beam received from the inspection object is detected and a step in which any nonlinearity of the first signal is corrected by interpolating the first signal on a linear scale.
      COPYRIGHT: (C)2003,JPO
    • 要解决的问题:提供在短时间内精确地测量光学装置的组延迟等特性的方法和方法。 解决方案:判断作为检查对象的光学装置的特性的方法由使用第一初始相干光束的步骤,第一初始光束的初始特性改变的步骤, 其中第一初始光束连接到检查对象的步骤,检测从检查对象接收到的第一初始光束的第一信号的步骤,以及通过以下步骤校正第一信号的任何非线性: 以线性刻度内插第一个信号。
    • 70. 发明专利
    • Method and apparatus for measuring group delay time difference of optical fiber
    • 用于测量光纤群的延迟时间差异的方法和装置
    • JPS6147533A
    • 1986-03-08
    • JP16904884
    • 1984-08-13
    • Nippon Telegr & Teleph Corp
    • SHIBATA NOBURUAOMI YOSHIYUKI
    • G01M11/02G01M11/00G02B6/00
    • G01M11/333G01M11/331
    • PURPOSE:To enhance time resolving power and to enable automatic measurement, by spacially separating light emitted from a light source into two luminous fluxes and interfering two luminous fluxes to measure the intensity of a beat signal while measuring group delay time difference to the difference between two light path lengths. CONSTITUTION:The shaft of an 1/4 wavelength plate 5 is rotated so that the light polarizing direction of two luminous fluxes incident to a polarized wave maintaining optical fiber 8 cross at right angles. These light polarizing directions coincide with two double refraction axes of the polarized wave maintaining optical fiber 8 and group delay time difference (polarized wave dispersion) is generated and two luminous fluxes generating said group delay time difference are interfered while the number of generated beat signals are recorded and this measurement is repeated while the position of a movable mirror 6 is moved. Next, the shaft of the 1/4 wavelength plate 5 is rotated to allow the main shaft of the 1/4 wavelength plate 5 to coincide with the light polarizing direction of the luminous flux incident to said 1/4 wavelength plate 5. In this case, no group delay time difference is generated and the measurement of the beat signal at this time is repeated while the position of the movable mirror 6 is moved. In two measurements as mentioned above, the light path difference at a position, where the beat signal becomes max., is measured to calculate group delay time difference.
    • 目的:为了提高时间分辨能力和自动测量,通过将从光源发出的光空间分离成两个光束并干扰两个光通量来测量拍频信号的强度,同时测量组延迟时间差与两 光路长度。 构成:旋转1/4波长板5的轴,使入射到维持光纤8的偏振波8的两个光束的光偏振方向成直角交叉。 这些光偏振方向与偏振波保持光纤8的两个双折射轴一致,并且产生组延迟时间差(偏振波分散),并且产生所述群延迟时间差的两个光束被干扰,而产生的拍子信号的数量是 记录并且可移动镜6的位置移动时重复该测量。 接下来,旋转1/4波长板5的轴使得1/4波长板5的主轴与入射到所述1/4波片5的光束的光偏振方向一致。在此 情况下,不会产生组延迟时间差,并且在可移动镜6的位置移动的同时重复此时的拍子信号的测量。 在如上所述的两次测量中,测量在拍频信号变为最大的位置处的光程差,以计算组延迟时间差。