What is the optical-to-electrical converter module used in servers

As the name suggests it is a modulating device that converts incoming optical signals from a laser source to electrical signals, in data communication systems. Many wonder whether optical modules are used for servers or chips. From a system architecture standpoint, optical. The V730 is a six-channel logic-level optical-to-electrical converter, packaged as a single-width, 6U VME module. The O2E can be customized to a wide range of wavelengths and is suitable for single mode and multimode applications. [pdf]