Optical modules used in Remote Radio Units (RRUs) for CPRI applications are required to support industrial temperature ranges, primarily because RRUs operate in diverse outdoor environments with extreme temperature variations. The base station can be divided into two modules: the RRU for transmitting signals and the BBU for processing signals. Open RAN (Open Radio Access Network) aims to disaggregate traditional. As the name implies, mobile fronthaul optical modules are optical transceiver modules used in mobile base stations, mostly industrial grade. BBU is used for signal processing, RRU is used for signal transmission and reception, and the feeder is used to connect the antenna and the base station. CPRI (Common Public Radio Interface) defines the interface relationship.
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