Improved OTRA based receiver section in Wireless Laser Communication link

Wireless Laser Communication (WLC) is emerging as an effective last mile solution for high rate data transmission. It consists of a transmitter, a receiver and the atmosphere as an unguided propagation medium. The transimpedance design based optical receivers employed till now still involve an unwanted compromise between bandwidth and noise, both of which are influenced by the capacitance of the photodiode. We suggest an Operational Transresistance Amplifier (OTRA) based receiver section for the link arrangement. The OTRA is a new building block in the field of analog signal processing. We show that it highly improves upon the compromise between bandwidth and noise. We also show how the proposed receiver section highly improves upon the contemporary receiver designs and provides several unique and useful advantages using an OTRA based band pass filter employed in the receiver section.