In-line silicon Schottky photodetectors on silicon cored fibers working in 1550 nm wavelength regimes

Abstract

We demonstrate an in-line silicon Schottky Photodetector (SSPD) operating at telecom wavelengths based on internal photoemission process. Instead of using silicon waveguides obtained by conventional semiconductor process, a silicon cored fiber was used for making the SSPD. The inherent waveguide property of Si-cored fiber enabled the SSPD to be connected directly with a receiving silica fiber, eliminating the need of aerial optical coupling. The SSPD exhibited comparable photo-detection characteristics such as responsivity when compared to the conventional SSPDs in 1550 nm.