BOSA (Bi-Directional Optical Subassembly) integrates TOSA and ROSA in one component, using wavelength division multiplexing (WDM) to realize sending and receiving on a single optical fiber. It saves fiber resources by 50% and is widely used in base station fronthaul, PON, and. The key components that perform electro-optical conversion in optical modules are called optical sub-assemblies (OSA). OSAs generally fall into three main categories: TOSA, ROSA, and BOSA. They are responsible for translating the optical signal into a corresponding electrical signal and viceversa, which inputs or. The function of the optical receiving component (ROSA) is to convert the optical signal into an electrical signal (O/E), and its performance indicators are mainly sensitivity (SEN), and the ROSA is composed of a detector and an adapter.
