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 PPC-1 will use the latest Gen 3 transmission technology from Tyco Telecom.
Fibre Optic Undersea Cable
The cables to be used on PPC-1 come from the SL17 (17mm) family. Tyco Telecom has manufactured many thousands of kilometres for numerous large cable systems. Undersea Repeaters
The repeater amplifies the optical signal so that it can be transmitted over long distances. Tyco Telecom 980-nanometer undersea repeaters use state-of-the-art Erbium-doped optical amplifier technology to achieve high performance and high reliability to transmit multiple-wavelength signals on the fibre pairs over transoceanic distances. The current repeater design can accommodate one to eight optical amplifier pairs in two physical designs. Undersea Branching Units (BU)
A Branching Unit acts like a fork in the road as it provides a means to divide a single cable into two cables. This functionality allows for the creation of “express routes” and “local routes”; the “express” route normally consists of a direct path, while the “local” route provides access to other cable stations. Both Power Switched and Passive BUs incorporate robust electrical and mechanical technology used since the beginnings of optical undersea systems. Submarine Line Terminating Equipment (SLTE)
The SLTE create the high quality, multiplexed optical signal suitable for transoceanic transmission.
The main components of SLTE are: - 10 Gb/s High Performance Optical Equipment (HPOE) - provides special grooming of the optical line signal to enable transmission over distances in excess of 12,000 km without regeneration.
- Wavelength Termination Equipment (WTE) - provides the Wavelength Division Multiplexing (WDM) and Wavelength Division Demultiplexing (WDD) functions.
- Terminal Line Amplifier (TLAs) - provides output & input amplification of the transmitted & received optical signal, respectively.
Line Monitoring Equipment
The optical line monitoring system provides in-service performance monitoring and out-of-service fault location for our undersea cable and repeaters. Power Feed Equipment (PFE)
The PFE are used to power the undersea repeaters from shore. Two HV PFE's one in Sydney, the other in Guam will provide up to 12,500 volts at at up to 1.6 Amps, sufficient for the single-end power feeding of the PPC-1 system. Further information can be found at www.tycotelecom.com .
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