Author:
Shi Zhiming,Ji Di,Hu Zhitao,Ye Nan,Pang Fufei,Song Yingxiong
Abstract
With the two-photon absorption enhanced by the internal Fabry-Perot resonator, a 2-μm wavelength 250 MHz sinusoidally-modulated optical signal is detected by a commercial 1.55-μm multi-quantum well laser diode with the photocurrent up to 20.59 μ.