What material are Aurora Network s optical modules made of

Aurora Network's optical modules are primarily enclosed in metal casings, providing durability and improved electromagnetic and ESD protection.Aurora Networks' SFP and plug-in optical transceivers, such as the TR4000-PI and TR4040-PI series, feature metal enclosures that enhance sturdiness and improve FCC test margins, while also controlling emissions and electrostatic discharge (ESD) for sensitive network applications . These metal housings are critical for modules used in multiport hubs, switches, and outdoor optical nodes, ensuring reliable operation under extended voltage (3.15–3.6 V) and temperature ranges (–40°C to +85°C), . The modules conform to the Small Form Factor Pluggable (SFP) standard, and all connectors are typically duplex LC/UPC, which are made from high-quality plastic and ceramic materials to ensure precise optical alignment and low insertion loss . Internally, the optical components, including the laser diodes and photodetectors, are composed of semiconductor materials such as InGaAs (Indium Gallium Arsenide) for photodetectors and InP (Indium Phosphide) or GaAs (Gallium Arsenide) for laser diodes, which are standard in high-speed optical communication devices, although the datasheets do not explicitly list these materials . In summary, the external casing of Aurora Network optical modules is metal, providing mechanical strength and EMI/ESD protection, while the internal optical components are made from standard semiconductor materials used in high-speed fiber-optic transceivers. The connectors are typically ceramic and plastic, ensuring precise fiber alignment and reliable signal transmission .