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    • 10. 发明授权
    • Light-controlled light modulator
    • 光控光调制器
    • US06753996B2
    • 2004-06-22
    • US09953796
    • 2001-09-17
    • Yasuo ShibataYasuhiro SuzukiYoshihisa SakaiYasumasa SuzakiAkira OkadaKazuto NoguchiRieko Sato
    • Yasuo ShibataYasuhiro SuzukiYoshihisa SakaiYasumasa SuzakiAkira OkadaKazuto NoguchiRieko Sato
    • G02F101
    • G02F1/3517G02F2/004
    • A light-controlled light modulator can achieve high-speed, low-loss wavelength conversion. Continuous light with a wavelength &lgr;j is launched into an MMI coupler via a port, and is split into two parts by the MMI coupler, which are led to a loop-type interferometer. In the loop-type interferometer, the two parts travel separately around the loop as clockwise traveling light and counterclockwise traveling light, are combined by the MMI coupler again via a filter-equipped phase modulator, thereby being emitted to the port. In this state, signal light &lgr;i(s) with a wavelength &lgr;i is launched into the filter-equipped phase modulator via a port. Even when the wavelength &lgr;i of the signal light &lgr;i(s) is equal to the wavelength &lgr;j of the wavelength converted output light, the wavelength conversion can be achieved with preventing noise from being mixed into the output light emitted from a port.
    • 光控光调制器可以实现高速,低损耗的波长转换。 具有波长lambdaj的连续光通过端口发射到MMI耦合器中,并由MMI耦合器分为两部分,其被引导到环型干涉仪。 在循环式干涉仪中,两个部件围绕环路分别作为顺时针行进光和逆时针方向的行进光,通过MMI耦合器再次通过配有滤波器的相位调制器组合,从而被发射到端口。 在这种状态下,具有波长lambdai的信号灯lambdai通过端口发射到装有滤波器的相位调制器中。 即使当信号光的波长长度等于波长转换的输出光的波长lambdaj时,也可以通过防止噪声混入从端口发出的输出光中来实现波长转换。