A splitter is a passive component that selects incoming signals in terms of frequency or wavelength and splits or combines them on several lines or optical fibers. In optical transmission technology, the splitter serves as an optical distributor that distributes the signals from a passive optical network( PON) to up to 32 or 64 optical fibers. In practice, the optical splitter is used in optical network units( ONU) in the connection area of access networks.
In xDSL and broadband networks, the splitter performs the frequency distribution function. It is connected at both ends of the subscriber line( ULL) and divides the incoming frequency range into several output frequency ranges with lower power. A well-known splitter application is the DSL splitter, also called Broadband Access Equipment (BBAE), which separates the voice signals and the data signals.
The signals transmitted via Digital Subscriber Line (DSL) are separated in the DSL splitter and reach the computer via the DSL modem - and the WLAN router. The second signal path is the direct connection from the DSL splitter to the telephone or - in the case of ISDN - via the network termination device( NTBA).
In optical networks, the optical splitter selects the optical input signal amplified by an optical amplifier into several WDM wavelengths, each of which reaches the output via an optical amplifier. Pure optical amplifiers include the semiconductor-based Semiconductor Optical Amplifier( SOA), the Raman amplifier, and the doped fiberEDFA ampl ifier and EYDFA amplifier.
Reversing the function of the splitter yields a combiner, which combines multiple line inputs into a single line output.
Pure optical amplifiers include the semiconductor-based Semiconductor Optical Amplifier (SOA), the Raman amplifier, and the doped fiber-optic EDFA amplifier and EYDFA amplifier.