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    Gas laser resonator
    83.
    发明公开
    Gas laser resonator 审中-公开
    Gaslaserresonator

    公开(公告)号：EP2869411A1

    公开(公告)日：2015-05-06

    申请号：EP14182262.7

    申请日：2014-08-26

    申请人： Via Mechanics, Ltd.

    发明人： Yamamura, Hideho ,  Ohmae, Goichi ,  Ohtani, Nobuyoshi

    IPC分类号： H01S3/036 ,  H01S3/03 ,  H01S3/07 ,  H01S3/097 ,  H01S3/134 ,  H01S3/032

    CPC分类号： H01S3/032 ,  H01S3/03 ,  H01S3/0305 ,  H01S3/034 ,  H01S3/036 ,  H01S3/09705 ,  H01S3/134

    摘要： The present invention aims to prevent, in a gas laser resonator, the deterioration of the quality of discharges produced by reduction of the pressure in the discharge chamber (2) as well as the inflow of impurity gases, such as air, into the discharge chamber (2). This is produced by providing a buffer chamber (12), different from the discharge chamber (2).
    A bracket (6) is attached to one end of a tube (1) comprising the discharge chamber interposing a sealing part, e.g. a gasket, (13) only for sealing the opening of the discharge chamber (2) and a gasket (14) for sealing both openings of the discharge chamber (2) and the buffer chamber (12). A glass plate (8) and a further bracket (9) are attached to the other end of the tube (1) interposing a gasket (15) only for sealing the opening of the discharge chamber (2) and a gasket (16) for sealing both openings of the discharge chamber (2) and the buffer chamber (12). The pressure in the buffer chamber (12) is set lower than the one of the discharge chamber (2) and than the atmospheric pressure so that to decrease the inflow of the impurity gases toward the discharge chamber (2).

    摘要翻译： 本发明的目的在于防止在气体激光谐振器中通过降低放电室（2）中的压力而产生的放电质量的恶化以及诸如空气的杂质气体的流入到放电室 （2）。 这是通过设置不同于排出室（2）的缓冲室（12）产生的。 托架（6）连接到管（1）的一端，该管（1）的一端包括排放室， 用于密封排出室（2）的开口的垫圈（13）和用于密封排出室（2）和缓冲室（12）的两个开口的垫圈（14）。 玻璃板（8）和另外的支架（9）附接到管（1）的另一端，其中插入仅用于密封排出室（2）的开口的垫圈（15）和用于 密封放电室（2）和缓冲室（12）的两个开口。 缓冲室（12）中的压力被设定为低于排出室（2）的压力，而不是大气压，以便减少杂质气体朝向排出室（2）的流入。

    DISPOSITIF ET PROCEDE PASSIF DE COMBINAISON COHERENTE D'UNE PLURALITE D'AMPLIFICATEURS OPTIQUES
    84.
    发明公开
    DISPOSITIF ET PROCEDE PASSIF DE COMBINAISON COHERENTE D'UNE PLURALITE D'AMPLIFICATEURS OPTIQUES 有权
    装置和方法无源光放大器连贯组合的各种

    公开(公告)号：EP2732512A2

    公开(公告)日：2014-05-21

    申请号：EP12744075.8

    申请日：2012-07-10

    申请人： Ecole Polytechnique

    发明人： PAPADOPOULOS, Dimitris ,  HANNA, Marc ,  DANIAULT, Louis

    IPC分类号： H01S3/23 ,  H01S3/07 ,  H01S3/081 ,  G02B27/10

    CPC分类号： H01S3/005 ,  G02B27/283 ,  H01S3/0064 ,  H01S3/06758 ,  H01S3/1618 ,  H01S3/165 ,  H01S3/23 ,  H01S3/2308 ,  H01S3/2316 ,  H01S3/2325 ,  H01S3/2333

    摘要： The invention relates to a passive device for the coherent combination of at least two optical amplifiers. According to the invention, said device comprises an interferometer having at least four branches (B1, B2, B3, B4) and comprising optical means for separating and combining polarisation, said means having four inlet-outlet ports that are respectively connected to a branch. The first branch comprises a first polarisation means, a first optical amplifier and a first mirror; the second branch comprises a second polarisation means, a second optical amplifier and a second mirror; the third branch comprises a third polarisation means and a third mirror; the fourth branch (B4) is an inlet-outlet branch of the interferometer; and the first, second and third polarisation means are designed such that a polarised optical beam entering respectively into the first, second or third branch and reflected by the mirror at the end of said branch forms a polarised optical beam that leaves said branch with a polarisation that is orthogonal to the polarisation of the polarised optical beam entering said branch.

    Device for controlling the power of a WDM signal whose number of channels varies
    85.
    发明授权
    Device for controlling the power of a WDM signal whose number of channels varies 失效
    设备而变化的信道数用于控制WDM信号的强度

    公开(公告)号：EP2296303B1

    公开(公告)日：2013-11-20

    申请号：EP10185439.6

    申请日：1997-04-30

    申请人： FUJITSU LIMITED

    发明人： Sugaya, Yasushi ,  Kinoshita, Susumu

    IPC分类号： H04J14/02 ,  H04B10/291 ,  H04B10/294 ,  H01S3/07

    CPC分类号： H01S3/06758 ,  H01S3/10015 ,  H01S3/1003 ,  H01S3/1301 ,  H01S2301/04 ,  H04B10/291 ,  H04B10/2912 ,  H04B10/2931 ,  H04B10/2942 ,  H04B10/296 ,  H04B2210/003 ,  H04J14/0221

    摘要： An optical amplifying apparatus which includes an optical amplifier, an optical attenuator and a controller. The optical amplifier amplifies a light signal having a variable number of channels. The optical attenuator passes the amplified light signal and has a variable light transmissivity. Prior to varying the number of channels in the light signal, the controller varies the light transmissivity of the optical attenuator so that a power level of the amplified light signal is maintained at an approximately constant level that depends on the number of channels in the light signal prior to the varying the number of channels. While the number of channels in the light signal is being varied, the controller maintains the light transmissivity of the optical attenuator to be constant. Subsequent to varying the number of channels in the light signal, the controller varies the light transmissivity of the optical attenuator so that a power level of the amplified light signal is maintained at an approximately constant level that depends on the number of channels in the light signal subsequent to the varying the number of channels.