公开(公告)号：US20050157368A1

公开(公告)日：2005-07-21

申请号：US10758808

申请日：2004-01-16

Applicant: Timothy Vang ,  David Scott ,  Elizabeth Kunkee ,  Wenshen Wang

Inventor： Timothy Vang ,  David Scott ,  Elizabeth Kunkee ,  Wenshen Wang

IPC: G02F1/017 ,  G02F1/21 ,  G02F1/225 ,  G02F1/03 ,  G02F1/07

CPC classification number: G02F1/2257 ,  B82Y10/00 ,  B82Y20/00 ,  G02F2001/01791 ,  G02F2001/212 ,  G02F2201/126

Abstract: 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.

Abstract translation: 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。