McMaster University

Purpose

The optical transmitter is a critically important component in optical satellite communications, which includes a high-power high-bit-rate laser, a telescope, and a driving circuit. The current satellite communication based on visible and near-infrared (NIR) light does not work for all-weather (such as fog, rain and snow). Optical satellite communication at mid-IR atmospheric windows (3-5 mm and 8-12 mm) is essential for practical all-weather networks since absorption is much smaller for wavelengths in mid-IR atmospheric windows than for visible and NIR wavelengths. Unfortunately, mid-IR lasers with high optical power and high bit rate are not available on the market. This project will provide a practical Made-in-Canada approach to mid-IR sources for all-weather optical satellite communications based on novel materials. The developed mid-IR transmitters will be tested under various weather conditions, with system performance of the developed mid-IR transmitters, radiation hardness and real world (space) implementation conducted.