Wavelength conversion device based on optical four wave mixing
    4.
    发明授权
    Wavelength conversion device based on optical four wave mixing 有权
    基于光学四波混频的波长转换器件

    公开(公告)号:EP2568329B1

    公开(公告)日:2018-01-31

    申请号:EP12195866.4

    申请日:2003-09-10

    申请人: FUJITSU LIMITED

    IPC分类号: G02F1/35

    摘要: A wavelength conversion device including a nonlinear medium having quantum dots uses a tunable laser as an excitation light source of optical four wave mixing, and performs wavelength conversion for a wide bandwidth signal light with optical four wave mixing by employing a control apparatus for controlling an optical system including an optical path of a signal light and an optical system including an optical path of an excitation light in correspondence with a wavelength of a signal light that is to be wavelength converted.

    OPTICAL AMPLIFIER DEVICE
    10.
    发明公开
    OPTICAL AMPLIFIER DEVICE 有权
    光放大器器件

    公开(公告)号:EP2672318A1

    公开(公告)日:2013-12-11

    申请号:EP12736206.9

    申请日:2012-01-20

    IPC分类号: G02F1/39 G02F1/37

    摘要: It is an objective of the present invention to provide a phase sensitive amplifier that can be used for an optical communication and that can provide low-noise amplification. The phase sensitive amplifier according to the present invention is a phase sensitive amplifier that uses the optical mixing using a nonlinear optical effect to amplify the signal light. The phase sensitive amplifier according to the present invention includes: the first second-order nonlinear optical element (602-1); and the second second-order nonlinear optical element (602-2). The first second-order nonlinear optical element (602-1) causes the fundamental wave light (621) to generate second harmonic light (622) used as pump light. A filter (606-1) is provided that spectrally separates only the second harmonic light from the fundamental wave light and the second harmonic light. The second second-order nonlinear optical element (602-2) includes a multiplexer (606-2) to multiplex the signal light with the second harmonic light. The multiplexed signal light and second harmonic light are used subjected to parametric amplification. A filter (606-3) is provided that spectrally separates only the amplified signal light from the second harmonic light and the amplified signal light.