double-heterostructure meaning in English

双异质结构

Examples

In this dissertation , the boa device with high extinction - ration , low drive - voltage , high - speed switch and insensitive to wide range of light wavelength , has been developed on double - heterostructure gaas / gaaias
本研究就是在gaas gaalas双异质结材料上设计高消光比，低驱动电压，高速度，较宽范围工作波长不敏感的高性能boa光开关。
The optical switch with double - heterostructure gaas / gaalas has low switching - voltage and light loss . and the boa - type optical switch utilizes maximum modal dispersion ( a p ) , does not require a specific fabrication length or length range to operate , has simple structure , and can exhibit very high extinction - ration from its two output ports ; so it is suitable for a 2 x 2 unit of optical switch array
而boa型结构(或称为零间隙定向耦合型)光开关利用了最大的模色散( ) ，不需要严格控制特殊的制造长度或制造范围，结构简单，从其两个输出端可以得到很高的消光比，是一种很好的2 2波导型光开关单元，同时也是光开关阵列的一种较好的选择。
In this dissertation , a boa - type waveguide optic switch with double - heterostructure gaas / gaalas has been researched . gaas - based integrated optical devices have good temperature , good anti - radiation and optical - transmission characteristics , and also have wide transparent range of wavelength . they can also be integrated on a chip with optical active devices and electronic devices , such as semiconductor laser , optical modulation , optical amplifier , pin , and so on
基于gaas材料的集成光学器件不仅具有良好的光传输特性、温度特性、抗辐射能力和其较宽的透明波长范围，还有望进一步实现芯片与光源、光调制器、光探测器和半导体光放大器等其它光电器件以及集成电路的单片集成；采用gaas gaalas双异质结材料制作的光开关可以得到较低的开关电压，而且采用gaas gaalas异质结材料的光传输损耗很小。
According to our theoretic analysis and the realistic fabricating condition , the boa device with double - heterostructure gaas / gaalas has been proposed to obtain 3db bandwidth greater than 2 . 5 ghz , half - wave voltage about 5v , extinction - ration less than - 40db , transmission loss of tm mode greater than 45db and transmission of te mode less than 0 . 15db . to obtain higher switching speed , we proposed that traveling - wave electrode is applied to boa device
我们选择在sigaas衬底上生长重掺杂层，通过控制其厚度来设计速度匹配的boa光开关行波电极，实现boa光开关的高速和高带宽，本文结合boa型光开关的特点提出一种行波电极型boa光开关结构，其理论3db调制带宽大于20ghz 。

double-heterostructure meaning in English

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