Silicon photodetector for integrated lithium niobate photonics

TL;DR

This paper reports the integration of an amorphous silicon photodetector with a lithium niobate photonic platform, achieving broad wavelength responsivity and detailed fabrication and characterization.

Contribution

It introduces a novel integrated silicon photodetector on a lithium niobate platform with high responsivity across visible wavelengths.

Findings

Responsivity of 22 to 37 mA/W across 635-850 nm

Successful integration of silicon detector with lithium niobate

Detailed fabrication and experimental characterization

Abstract

We demonstrate integration of an amorphous silicon photodetector with thin film lithium niobate photonic platform operating in the visible wavelength range. We present the details of the design, fabrication, integration and experimental characterization of this metal-semiconductor-metal photodetector that features responsivity of 22 mA/W to 37mA/W over the wide optical bandwidth spanning 635 nm to 850 nm wavelengths range.