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1. 发明申请

US20050157368A1 Quantum dots engineerable optical modulator transfer characteristics 审中-公开
标题翻译：量子点可调光学调制器传输特性
公开(公告)号：US20050157368A1
公开(公告)日：2005-07-21
申请号：US10758808
申请日：2004-01-16
申请人： Timothy Vang , David Scott , Elizabeth Kunkee , Wenshen Wang
发明人： Timothy Vang , David Scott , Elizabeth Kunkee , Wenshen Wang
IPC分类号： G02F1/017 , G02F1/21 , G02F1/225 , G02F1/03 , G02F1/07
CPC分类号： G02F1/2257 , B82Y10/00 , B82Y20/00 , G02F2001/01791 , G02F2001/212 , G02F2201/126
摘要： A Mach-Zehnder modulator that employs quantum dots to provide a push-pull drive operation. The Mach-Zehnder modulator includes a first arm having a first PIN semiconductor device and a second arm having a second PIN semiconductor device, where the intrinsic layers of the PIN devices include a quantum dot structure. A first DC bias signal is applied to one of the PIN devices, and a second DC bias signal is applied to the other PIN device. The first DC bias signal biases the intrinsic layer at an operating voltage where the index of refraction of the intrinsic layer is at a positive portion of an electro-refraction transfer function, and the second DC bias potential biases the intrinsic layer at an operating voltage where the index of refraction of the intrinsic layer is at a negative portion of the transfer function.
摘要翻译：采用量子点的马赫 - 策德尔（Mach-Zehnder）调制器提供推挽驱动操作。马赫 - 策德尔调制器包括具有第一PIN半导体器件的第一臂和具有第二PIN半导体器件的第二臂，其中PIN器件的本征层包括量子点结构。第一DC偏置信号被施加到PIN器件中的一个，并且第二DC偏置信号被施加到另一个PIN器件。第一DC偏置信号在本征层的折射率处于电折射传递函数的正部分的工作电压下偏置本征层，并且第二DC偏置电位在其工作电压下偏置本征层，本征层的折射率处于传递函数的负部分。

2. 发明申请

US20050094917A1 Slow wave optical waveguide for velocity matched semiconductor modulators 有权
标题翻译：用于速度匹配半导体调制器的慢波光波导
公开(公告)号：US20050094917A1
公开(公告)日：2005-05-05
申请号：US10700245
申请日：2003-11-03
申请人： Wenshen Wang , David Scott , Elizabeth Kunkee
发明人： Wenshen Wang , David Scott , Elizabeth Kunkee
IPC分类号： G02B6/26 , G02B6/42 , G02F1/025 , G02F1/295
CPC分类号： B82Y20/00 , B82Y10/00 , G02F1/025 , G02F2201/127 , G02F2201/307 , G02F2202/32
摘要： A PIN electro-optical traveling wave modulator (10) including diffraction gratings (34, 36) positioned at opposing sides of an optical waveguide (20) that act to change the propagation pattern of the waveguide (20). The modulator (10) includes an N-type layer (14), a P-type layer (18) and an intrinsic layer (16) acting as the waveguide (20). A metal electrode (26) is in electrical contact with the N-type layer (14), and a metal electrode (30) is in electrical contact with the P-type layer (18). The electrodes (26, 30) define an RF transmission line. An optical wave (22) propagates along the waveguide (20) and interacts with the gratings (34, 36) which slow the optical wave (22) to match its speed to the speed of the RF wave in the transmission line. In one embodiment, the gratings (34, 36) are 2-D gratings formed by vertical holes (38) in the waveguide (20).
摘要翻译：一种PIN电光行波调制器（10），其包括位于光波导（20）的相对侧的衍射光栅（34,36），其用于改变波导（20）的传播图案。调制器（10）包括N型层（14），P型层（18）和用作波导（20）的本征层（16）。金属电极（26）与N型层（14）电接触，金属电极（30）与P型层（18）电接触。电极（26,30）限定RF传输线。光波（22）沿着波导（20）传播并与光栅（34,36）相互作用，光栅（34,36）使光波（22）的速度与传输线中的RF波的速度相匹配。在一个实施例中，光栅（34,36）是由波导（20）中的垂直孔（38）形成的2-D光栅。

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