Free-Space Optical Communications Link at 1550 Nm Using Multiple-Quantum-Well Modulating Retroreflectors in a Marine Environment

Abstract

A 1550-nm eye-safe, free-space optical communications link is demonstrated at rates up to 5 Mbits/s over a distance of 2 km in the Chesapeake Bay, using quantum-well-based modulating retroreflectors. Tests are conducted under various atmospheric conditions over a period of about a year. The experimental and theoretical link budgets are compared and statistical measurements of the effects of scintillation are collected.