Optical amplifier evaluation method and optical amplifier evaluation instrument
    11.
    发明授权
    Optical amplifier evaluation method and optical amplifier evaluation instrument 失效
    光放大器评估方法和光放大器评估仪

    公开(公告)号:US06480318B2

    公开(公告)日:2002-11-12

    申请号:US09836157

    申请日:2001-04-17

    IPC分类号: G02F103

    CPC分类号: H04B10/0731

    摘要: In an optical amplifier evaluation instrument, a rectangular spectrum light source 1 transmits continuous light having a wide-band and flat spectrum shape, a first optical modulator 2 receives and pulse-modulates the continuous light. Further, a second optical modulator 3 operates in the same period as the first optical modulator 2 and performs the on/off pulse operation, thereby providing a sampling window in a time domain for extracting and suppressing an optical signal. A modulation signal generation section 4 performs such control and drive. An optical signal undergoing pulse intensity modulation is input to a measured optical amplifier 6. Post-amplified signal light power for each frequency component and amplified spontaneous emission power for each frequency component in a time domain in which no optical pulse signal exists are measured and operations are performed for each wavelength.

    摘要翻译: 在光放大器评价用仪器中,矩形光谱光源1透射具有宽带平坦光谱形状的连续光,第一光调制器2接收并脉冲调制连续光。 此外,第二光调制器3在与第一光调制器2相同的周期内操作,并执行接通/断开脉冲操作,从而在时域中提取和抑制光信号的采样窗口。 调制信号生成部4进行这样的控制和驱动。 进行脉冲强度调制的光信号被输入到测量的光放大器6.测量每个频率分量的后放大信号光功率和在其中不存在光脉冲信号的时域中的每个频率分量的放大的自发发射功率和操作 对于每个波长执行。

    Distance correction method and the controller for the reflectometer
    12.
    发明授权
    Distance correction method and the controller for the reflectometer 失效
    距离校正方法和反射计的控制器

    公开(公告)号:US5978075A

    公开(公告)日:1999-11-02

    申请号:US86506

    申请日:1998-05-28

    申请人: Tohru Mori

    发明人: Tohru Mori

    IPC分类号: G01M11/00 G02B6/00 G01N21/00

    CPC分类号: G01M11/31

    摘要: A distance correction method and the controller for a reflectometer is disclosed which is able to perform accurate correction of the distances measured by reflectometer. In the distance correction method for the reflectometer which measures the Fresnel reflection or Raleigh back-scattering light of an optical fiber or an optical waveguide, the distance correction D.sub.wg1 -D.sub.wgn is performed according to the respective group refraction ratios which are the parameters of the optical fiber or the optical waveguides longitudinally connected with having different known group refraction ratios.

    摘要翻译: 公开了一种距离校正方法和用于反射计的控制器,其能够对由反射计测量的距离进行精确校正。 在测量光纤或光波导的菲涅耳反射或罗利背散射光的反射计的距离校正方法中,根据作为光学器件的参数的各组折射率执行距离校正Dwg1-Dwgn 光纤或光波导纵向连接有不同的已知组折射率。

    Immobilized enzyme column
    13.
    发明授权
    Immobilized enzyme column 失效
    固定酶柱

    公开(公告)号:US4331767A

    公开(公告)日:1982-05-25

    申请号:US198109

    申请日:1980-04-24

    摘要: An immobilized enzyme column useful for automatic chemical analyzers for analyzing substances contained in the blood serum, urine or the like with use of an enzyme for clinical tests includes at least one column main body (19, 34 or 44, 51 and 52). The column has a channel (31) extending from a sample inlet (24) to a sample outlet (27). An air bubble inlet (28) is disposed close to the sample outlet to communicate with the channel (31), and an air bubble outlet (25) is disposed close to the sample inlet to communicate with the channel. An immobilized enzyme accommodating portion (20 or 35) is provided in the channel between the bubble inlet (28) and the bubble outlet (25) and partitioned by a filter (29) at each end thereof.

    摘要翻译: PCT No.PCT / JP79 / 00234 Sec。 371日期:1980年4月22日 102(e)日期1980年4月22日PCT提交1979年9月4日PCT公布。 出版物WO80 / 00574 1980年4月3日。用于自动化学分析仪的固定化酶柱用于分析使用用于临床试验的酶的血清,尿等中所含的物质,包括至少一个柱主体(19,34或44 ,51和52)。 该柱具有从样品入口(24)延伸到样品出口(27)的通道(31)。 气泡入口(28)靠近样品出口设置,与通道(31)连通,并且气泡出口(25)靠近样品入口设置以与通道连通。 固定化酶容纳部分(20或35)设置在气泡入口(28)和气泡出口(25)之间的通道中,并在其两端由过滤器(29)分隔。

    Polarization-independent reflectometry and polarization-independent reflectometer
    16.
    发明授权
    Polarization-independent reflectometry and polarization-independent reflectometer 有权
    偏振无关反射计和偏振无关反射计

    公开(公告)号:US06476919B1

    公开(公告)日:2002-11-05

    申请号:US09404810

    申请日:1999-09-24

    IPC分类号: G01B902

    CPC分类号: G01M11/3181

    摘要: Emitted light from a light source 1 is separated into two parts through an optical fiber coupler 2, one is entered in a measured optical module 3 as measurement light, and the other is given a group delay by means of an optical fiber delay line 5, a reflector 25, etc., as local light signal, then the local light signal is combined with reflected light signal from the measured optical module 3 through an optical fiber coupler 21 and the reflected light signal and the local light signal are caused to interfere with each other. A polarization controller 100 comprising a polarizer and a polarization rotation device for arbitrarily rotating the polarization state 0 degrees and 90 degrees at the time is used to generate beat signals at the polarization rotation angles, and the sum of the intensities of the beat signals is found, making it possible to measure the light power of the reflected light signal regardless of the polarization state of the local light signal or reflected light signal.

    摘要翻译: 来自光源1的发光通过光纤耦合器2分成两部分,一个作为测量光进入测量的光学模块3,另一个通过光纤延迟线5被给予组延迟, 反射器25等作为本地光信号,然后通过光纤耦合器21将本地光信号与来自测量的光学模块3的反射光信号组合,并且使反射光信号和局部光信号与 彼此。 使用包括偏振器的偏振控制器100和用于随时旋转0度和90度的偏振状态的偏振旋转装置,以产生偏振旋转角度的拍子信号,并且找到拍子信号的强度之和 ,使得可以测量反射光信号的光功率,而不管本地光信号或反射光信号的偏振状态如何。

    Loudspeaker structure and system
    18.
    发明授权
    Loudspeaker structure and system 失效
    扬声器结构和系统

    公开(公告)号:US4653103A

    公开(公告)日:1987-03-24

    申请号:US826249

    申请日:1986-02-05

    CPC分类号: H04R9/047

    摘要: In a planar loudspeaker structure comprising planar membrane for forming a diaphragm on which a voice coil of a conductor pattern is formed, and a magnetic circuit for supplying a DC magnetic flux which crosses the voice coil, the conductor pattern includes first and second zigzag conductor pattern portions which are juxtaposed on substantially the entire area of the membrane and connected in series. Opposite ends of the series connection of the first and second conductor pattern portions are respectively connected to first and second terminals for receiving a low-band component of an input audio signal. A high-band component of the input signal is applied to a third terminal connected to a junction between the first and second conductor pattern portions and supplied only to the second conductor pattern portion. The voice coil having the first and second zigzag conductor pattern portions is driven in a multi-drive fashion by driving forces which are weighted relative to each other so as to provide a flat sound pressure/frequency characteristic and a flat electrical impedance characteristic. In addition, the radiation area of the diaphragm is partly weighted by the disposition of the first and second zigzag conductor pattern portions so that the entirety of the membrane is vibrated in a low band and a portion of the membrane is vibrated in a high band, thereby improving the directivity characteristic.

    摘要翻译: 在包括用于形成其上形成有导体图案的音圈的隔膜的平面膜的平面扬声器结构和用于提供穿过音圈的DC磁通的磁路中,导体图案包括第一和第二之字形导体图案 这些部分并置在膜的基本上整个区域上并串联连接。 第一和第二导体图案部分的串联连接的相对端分别连接到用于接收输入音频信号的低频分量的第一和第二端子。 输入信号的高频分量被施加到连接到第一和第二导体图形部分之间的结点并仅供给第二导体图形部分的第三端子。 具有第一和第二曲折导体图形部分的音圈通过相对于彼此加权的驱动力以多驱动方式被驱动,以提供平坦的声压/频率特性和平坦的电阻抗特性。 此外,通过第一和第二之字形导体图形部分的布置,隔膜的辐射面积被部分地加权,使得整个膜在低带振动并且膜的一部分在高频带中振动, 从而提高方向特性。

    Photodetector with plural switched feedback resistors
    19.
    发明授权
    Photodetector with plural switched feedback resistors 有权
    具有多个开关反馈电阻的光电检测器

    公开(公告)号:US07022967B2

    公开(公告)日:2006-04-04

    申请号:US10648110

    申请日:2003-08-26

    IPC分类号: H01J40/14 H03F3/08

    CPC分类号: G01J1/44 G01J2001/4406

    摘要: A photodetector continuously measure quantity of light ranging from high intensity to low intensity at high speed. The photodetector comprises an operational amplifier, a photodiode connected to an inverting terminal of the operational amplifier for outputting a signal corresponding to quantity of light to be detected, a plurality of feedback resistors differentiated in each resistance value, an analog switch for selectively connecting input terminals thereof to which one ends of the feedback resistors are connected to an output terminal of the operational amplifier except the feedback resistor having the maximum resistance value, or connecting the input terminal thereof which is rendered in a non-connection state to the output terminal of the operational amplifier instead of the feedback resistor having the maximum resistance value, wherein the feedback resistor having the maximum resistance value is connected to the output terminal of the operational amplifier at its one end and to the inverting input terminal of the operational amplifier at its other end, and wherein the other ends of the other feedback resistors are connected to the inverting input terminal of the operational amplifier.

    摘要翻译: 光电探测器连续地测量从高强度到低强度的高光量。 光检测器包括运算放大器,连接到运算放大器的反相端的光电二极管,用于输出对应于待检测光量的信号,在每个电阻值中区分的多个反馈电阻;模拟开关,用于选择性地连接输入端 其中反馈电阻器的一端连接到除了具有最大电阻值的反馈电阻器之外的运算放大器的输出端子,或者将其处于非连接状态的输入端子连接到非连接状态的输出端子 运算放大器代替具有最大电阻值的反馈电阻器,其中具有最大电阻值的反馈电阻器在其一端连接到运算放大器的输出端,并在其另一端连接到运算放大器的反相输入端 ,并且其中另一端的另一端 反馈电阻连接到运算放大器的反相输入端。

    Noise figure-measuring device and noise figure-measuring method
    20.
    发明授权
    Noise figure-measuring device and noise figure-measuring method 有权
    噪声系数测量装置和噪声系数测量方法

    公开(公告)号:US06898001B2

    公开(公告)日:2005-05-24

    申请号:US09996509

    申请日:2001-11-28

    IPC分类号: G01J3/02 G01J3/28 H01S3/00

    CPC分类号: H04B10/0731

    摘要: Output light spectrum P2(λ) data from an optical amplifier and input light spectrum P1(λ) data of signal light are prepared, the difference between the P2(λ) and a value obtained by multiplying the P1(λ) by a provisional gain GT is determined (Steps S232), for the obtained spectrum data, a noise removing process such as a moving average process and the like is performed and then, a spline interpolation process is also performed, whereby ASE light spectrum P3(λ) data is prepared and an ASE light level P ASE is determined (Steps S233 through S235). In addition, a noise figure-measuring device 10 calculates the number of channels of WDM light and signal light wavelengths of the respective channels based on the P1(λ) or P2(λ), and performs analysis to calculate a noise figure NF and the like of an appointed wavelength range around the center of each wavelength thus calculated.

    摘要翻译: 准备来自光放大器的输出光谱P 2(λ)数据和信号光的输入光谱P 1(λ)数据,P 2(λ)与通过将P 1(λ) 通过确定临时增益GT(步骤S232),对于所获得的频谱数据,执行诸如移动平均处理之类的噪声去除处理,然后,还执行样条插值处理,由此ASE光谱P 3(lambda)数据,并确定ASE光级P ASE(步骤S333至S353)。 此外,噪声系数测量装置10基于P 1(λ)或P 2(λ)计算各个信道的WDM光和信号光波长的信道数,并进行分析以计算噪声系数NF 以及像这样计算的每个波长的中心周围的指定波长范围。