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. This assembly comprises a light source, such as a laser diode or a semiconductor light-emitting diode (LED), an optical interface, a. For over 30 years, MACOM has developed and manufactured the fastest, most sensitive and broadest wavelength photoreceivers available. Our experience in leading-edge technology allows us to provide products that easily integrate within customers' systems. MACOM's photoreceiver product line focuses. That is, metal medium communication represented by coaxial cables and network cables is gradually being replaced by optical fiber media. Composition of Optical Modules The optical module, known as Optical Transceiver in. First of all, the two most important parts of the optical transceiver are the optical transmitting assembly (TOSA) and the optical receiving assembly (ROSA). Among various optical module form factors, SFP (Small Form-Factor Pluggable).