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    • 2. 发明公开
    • Single-electrode push-pull configuration for semiconductor PIN modulators
    • Gegentakt-Einzel-ElektrodenkonfigurationfürPIN-Halbleitermodulatoren
    • EP1473587A1
    • 2004-11-03
    • EP03026666.2
    • 2003-11-19
    • Northrop Grumman Corporation
    • Scott, David C.Vang, Timothy A.Wang, WenshenKunkee, Elizabeth T.
    • G02F1/225
    • G02F1/2257G02F2001/212G02F2201/126
    • A single-electrode, push-pull semiconductor PIN Mach-Zehnder modulator (10) that includes first and second PIN devices (12, 14) on a substrate (16). Intrinsic layers (22, 28) of the devices (12, 14) are the active regions of two arms (50, 52) of a Mach-Zehnder interferometer. An outer electrode (38) is connected to the N layer (24) of the first PIN device (12) and a center electrode (40) is connected to the P layer (20) of the first PIN device (12). An outer electrode (42) is connected to the P layer (26) of the second PIN device (14) and the center electrode (40) is connected to the N layer (30) of the second PIN device (14). An RF modulation signal biases the PIN devices (12, 14) in opposite directions and causes the index refraction of the intrinsic layers (22, 28) to change in opposite directions to give a push-pull modulation effect.
    • 包括衬底(16)上的第一和第二PIN器件(12,14)的单电极推挽半导体引脚马赫 - 曾德调制器(10)。 装置(12,14)的本征层(22,28)是马赫 - 曾德干涉仪的两个臂(50,52)的有源区域。 外部电极(38)连接到第一PIN器件(12)的N层(24),并且中心电极(40)连接到第一PIN器件(12)的P层(20)。 外部电极(42)连接到第二PIN器件(14)的P层(26),中心电极(40)连接到第二PIN器件(14)的N层(30)。 RF调制信号在相反方向上偏置PIN器件(12,14),并使本征层(22,28)的折射折射沿相反方向改变,以产生推挽调制效果。