Cable Landing Station North
Cable Landing Station West
TLTE (OTN, WDM)
SLTE
PFE
Submarine repeater
Gain equalizer
Branching unit
Dry plant
Branching Unit
Branching Unit is a piece of hardware that allows a cable to split and service more than one destination allowing a Submarine Cable network to link multiple landing stations. Branching units can be a physical split of the fibers in a cable (in a 'Y' style) or can be Optical Add/Drop Multiplexers (OADM's) which can route optical signals/wavelengths to and from the required landing stations.
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Consists of the submarine cable network segment on land between the beach manhole and the cable landing station. This includes Power Feeding Equipment (PFE), submarine and terrestrial line terminals (SLTE & TLTE) and land cable segments.
Cable Landing Station East
TLTE = Terrestrial Line Termination Equipment OTN = Optical Transport Network WDM = Wavelength Division Multiplexing
SLTE = Submarine Line Terminal Equipment
PFE = Power Feed Equipment
Beach manhole
The landing station is where the head end and data center are found, this is the location where the submarine cable system (wet plant) is connected to the land- based network for terrestrial backhaul.
Landing Stations
Beach Manhole = point where the transition between the marine cable and terrestrial cable is made. A chamber is constructed near the landing station and the beach joint is made inside.
Submarine cable (Armored, lightweight)
Land-based high speed 100G networks
G.fast, DOCSIS, G-PON
4G (LTE)
5G
Repeaters
Longer lengths of fiber require optical amplifiers (repeaters) in order to boost optical signal levels and overcome the optical losses in order to maintain adequate Optical Signal-to-Noise Ratio (OSNR), typically repeaters are Erbium Doped Fiber Amplifiers (EDFA).
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