As an essential component of optical fiber communication, optical modules are optoelectronic devices that facilitate the conversion between optical and electrical signals during the transmission process. An optical module is a typically hot-pluggable optical transceiver used in high-bandwidth data communications applications. The tasks and solutions are diverse and range from classic lenses and high-performance lighting modules to innovative solutions such as optical modules for wavefront manipulation. Every LED in your home, the camera sensor in your phone, the laser reading a fiber optic cable, and the pulse oximeter clipped to your finger all rely on optoelectronic.