O-L Band Bias-Free High-Speed UTC-PD for Advanced Optical Fiber Communications

In this report, we present an O-L band high-baud-rate UTC photodetector excluding a bias circuit, which can be operated at zero bias. The measured responsivity over 0.13 A/W was fully covered in the range (O-L), and the 100 Gbaud (NRZ) good eye diagram performances were confirmed at 0 V for wavelengths of 1320 nm and 1550 nm.