Share Email Print
cover

Proceedings Paper

DESIGN subwavelength gratings in resonant cavity enhanced (RCE) photodetectors
Author(s): Yisu Yang; Yongqing Huang; Hui Huang; Qi Wang; Xiaomin Ren
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

Two-dimensional subwavelength gratings (2D-SWGs) that consist of net-grid structure are studied by rigorous coupledwave approach (RCWA) and finite-difference-time-domain (FDTD) method. 2D-SWGs can be designed as infrared reflectors whose reflectivity can reach 99.98% at 1.55μm while maintaining reflectivity higher than 99% across the 1.47- 1.59μm wavelength range. We design these SWGs as the bottom mirrors in resonant cavity enhanced photodetectors (RCE-PDs) for optical communication system. Because SWGs can achieve high reflectivity as well as wide bandwidth, RCE PD's quantum efficiency is increased to 95.7% at 1.55μm and the device has a significant size reduction compared with using DBR bottom mirror.

Paper Details

Date Published: 3 December 2009
PDF: 10 pages
Proc. SPIE 7631, Optoelectronic Materials and Devices IV, 76311N (3 December 2009); doi: 10.1117/12.851265
Show Author Affiliations
Yisu Yang, Beijing Univ. of Posts and Telecommunications (China)
Yongqing Huang, Beijing Univ. of Posts and Telecommunications (China)
Hui Huang, Beijing Univ. of Posts and Telecommunications (China)
Qi Wang, Beijing Univ. of Posts and Telecommunications (China)
Xiaomin Ren, Beijing Univ. of Posts and Telecommunications (China)


Published in SPIE Proceedings Vol. 7631:
Optoelectronic Materials and Devices IV
Jian-Jun He; Guang-Hua Duan; Fumio Koyama; Ming C. Wu, Editor(s)

© SPIE. Terms of Use
Back to Top