20-Gb/s 14-k/spl Omega/ transimpedance long-wavelength MSM-HEMT photoreceiver OEIC

Abstract

A fully monolithically integrated photoreceiver composed of a metal-semiconductor-metal (MSM) photodetector, a transimpedance amplifier and three limiting amplifier stages for high-speed optical-fiber links is presented. The IC was fabricated using a 0.2-μm gatelength high-electron mobility transistor (HEMT) technology with a f <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">T</sub> of 60 GHz. The 1.3-1.55-μm wavelength photoreceiver optoelectronic integrated circuit (OEIC) has a bandwidth of 16 GHz with a high-transimpedance gain of 14 k/spl Omega/. Eye diagrams were demonstrated at 20 Gb/s with a output voltage of 1 V/sub p-p/.