2-DIMENSIONAL BI-PERIODIC GRATING-COUPLED ONE-COLOR AND 2-COLOR QUANTUM-WELL INFRARED PHOTODETECTORS

被引：2

作者：

TSAI, KL

LEE, CP

TSANG, JS

CHEN, HR

CHANG, KH

机构：

[1] CHUNG CHENG INST TECHNOL,INST PHYS APPL,TAHSI,TAIWAN

[2] NATL CHIAO TUNG UNIV,INST ELECTR,HSINCHU 30039,TAIWAN

来源：

IEEE ELECTRON DEVICE LETTERS | 1995年 / 16卷 / 02期

关键词：

D O I：

10.1109/55.386031

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Multiple quantum well infrared photodetectors (QWIP's) with two-dimensional bi-periodic grating couplers have been demonstrated. For one-color QWIP's, the response linewidths of such QWIP's are found to be much wider than those of conventional grating coupled QWIP's. The bi-periodic gratings have also been applied to two color QWIP's to separately optimize the absorption at two wavelength bands. The large difference in responsivities at the two wavelength bands for devices with single period gratings can be greatly reduced with the use of bi-periodic gratings.

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页码：49 / 51

页数：3

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