At the heart of every optical transceiver lie three essential components, often called the “Three Pillars” of optical communication: Laser — generates light. Modulator — encodes data onto the light. That is, metal medium communication represented by coaxial cables and network cables is gradually being replaced by optical fiber media. Whether in 5G base stations, hyperscale data centers, or long-haul telecom networks, these modules convert electrical signals into optical ones — and back again — to ensure fast, stable, and. 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. Operating at the physical layer of the OSI model, optical modules are core devices in optical. Its primary function is to achieve optoelectronic conversion by converting electrical signals into optical signals and vice versa. An optical module usually consists of an optical transmitting device (TOSA, including a laser), an optical receiving device (ROSA, including a photodetector). An optical module is a typically hot-pluggable optical transceiver used in high-bandwidth data communications applications.
