The YMF Series Electromagnetic Shielding Fiber Optic Connector is designed for applications requiring high-density optical transmission and superior EMI shielding performance. Manufactured from passivated stainless steel or nickel-plated copper alloy, the connector features five-key polarization. Hydro Group design, manufacture and pressure test underwater electrical and optical connectors and connector-cable assemblies for unique and challenging subsea applications. We typically work in three key energy markets, oil & gas, marine renewable energy, and defence, where we focus on technology. A fiber optic connector is a mechanical device used to align and join optical fibers, enabling light to pass through with minimal loss.