Optical Transceivers are BOSA (Bi-directional Optical Sub-Assembly) Assemblies and packaged Laser Diode and Photo Diode Modules. The Laser Emitting part is called TOSA (Transmit Optical Sub-Assembly), its key device is Laser Diode; the Laser Receiving part is called ROSA (Receiver Optical Sub-Assembly), the key device is Photo Diode.
BOSA is mainly composed of Laser Diodes, Adapter, Filter, Base, Detector, Isolator and Die Sleeve.
TOSA is a Laser Transmit part to convert electrical signals into optical signals, and optical power and threshold are the key to performance judgement.
ROSA is a Laser Receiving part to convert optical signals into electrical signals at the receiving end.
