Junfeng Song, Andy Lim Eu-Jin, Xianshu Luo, Ying Huang, Xiaoguang Tu, Lianxi Jia, Qing Fang, Tsung-Yang Liow, Mingbin Yu, and Guo-Qiang Lo, "A microring resonator photodetector for enhancement in L-band performance," Opt. Express 22, 26976-26984 (2014) http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-22-22-26976
Abstract:
We proposed a micro-ring resonator (MRR) enhanced photodetector (PD) structure. Resonance wavelength enhanced by the MRR amplifies the PD response. At L-band wavelengths, responsivity was doubled for an ultra-short germanium PD of 4 μm employing the MRR structure. Data rates of up to 40 Gb/s were also demonstrated at 1600 nm.