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公开(公告)号:US07242821B2
公开(公告)日:2007-07-10
申请号:US10951610
申请日:2004-09-29
CPC分类号: G02F1/0136 , G02B6/14 , G02F1/035 , G02F2202/10
摘要: An optical mode converter comprising a slow wave electrode structure and including Schottky barriers for preventing an accumulation of free carriers in the optical waveguide region of the converter. The Schottky barriers are also used for suppressing higher order modes in the waveguide. Low refractive index insulators are used to allow efficient driving of the device without hindering the impedance or the microwave index of the optical mode converter. Two-photon absorption processes are eliminated through the use of a waveguide semiconductor material having a bandgap of at least twice the photon energy of the light beam propagating through the optical mode converter.
摘要翻译: 一种光模式转换器,包括慢波电极结构并且包括用于防止转换器的光波导区域中的自由载流子积聚的肖特基势垒。 肖特基势垒也用于抑制波导中的高阶模式。 使用低折射率绝缘体来允许器件的有效驱动,而不会阻碍光学模式转换器的阻抗或微波指数。 通过使用波导半导体材料来消除双光子吸收过程,所述波导半导体材料具有通过光学模式转换器传播的光束的光子能量的至少两倍的带隙。