Title :
Design and analysis of resonant cavity enhanced photodetector by using InP-based concentric circular subwavelength grating
Author :
Wang, Tingting ; Huang, Yongqing ; Duan, Xiaofeng ; Shang, Yufeng ; Wang, Wei ; Ren, Xiaomin
Author_Institution :
State Key Lab. of Inf. Photonics & Opt. Commun., Beijing Univ. of Posts & Telecommun., Beijing, China
Abstract :
This paper presents the design and analysis of a novel resonant cavity enhanced photodetector which is realized by utilizing concentric circular subwavelength gratings (CC-SWGs) as reflective mirrors. The CC-SWG proposed here can achieve a reflectivity of higher than 99% within a broad wavelength range from 1.37 to 1.63 μm. The calculated peak quantum efficiency of the designed photodetector can achieve 90% at 1.55 μm.
Keywords :
III-V semiconductors; cavity resonators; diffraction gratings; indium compounds; mirrors; optical design techniques; photodetectors; concentric circular subwavelength grating; reflective mirrors; resonant cavity enhanced photodetector; wavelength 1.37 mum to 1.63 mum; Absorption; Abstracts; Geometry; Substrates; WDM system; concentric circular subwavelength gratings; reflector; resonant cavity photodetecor;
Conference_Titel :
Communications and Photonics Conference and Exhibition, 2011. ACP. Asia
Conference_Location :
Shanghai
Print_ISBN :
978-0-8194-8961-6
