Designing a fiber optic network for a long-haul submarine cable system presents unique challenges that require careful consideration of several key factors. One crucial consideration is optical fiber selection. Submarine cables require specialized optical fibers with ultra-low attenuation to minimize signal loss over long distances. These fibers are designed to withstand the harsh marine environment and the high pressures at deep-sea depths. Repeaters/amplifiers are also critical. Due to the long distances involved, submarine cable systems require optical amplifiers, often EDFAs (Erbium-Doped Fiber Amplifiers), spaced at regular intervals along the cable to boost the signal strength. The design must optimize the amplifier spacing and power levels to balance ....
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