Power Feeding Equipment (PFE) is a specialized power supply system used to deliver power to the optical amplifiers (repeaters) within long-distance submarine fiber optic communication systems.
A submarine cable consists of optical fibers surrounded by a conductive layer, which is in turn protected by an outer insulating layer, typically made of polyethylene. Over long distances, the optical signal attenuates due to intrinsic fiber loss. To counteract this, optical repeaters are placed at regular intervals along the cable to boost the signal strength.
To power these repeaters, the PFE delivers a current through the cable's conductive layer. Due to the very high capacitance of a long submarine cable, using alternating current (AC) would result in significant voltage drops and power loss. For this reason, PFEs typically employ a high-voltage, constant-current DC feed.
With their high power output and versatile design, Matsusada Precision's programmable high-voltage DC power supplies are ideally suited for the demanding requirements of PFE applications.
- Related Words:
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- Submarine cable transmission
- Power Feeding Equipment (PFE)
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