When is a Mode Conditioning Patch Cable required?

Question

Options

• AA 1000Base-LX Transceiver is operated with 62.5/125 cables up to 500 m.
• BA 1000Base-SX Transceiver is operated with 62.5/125 cables up to 500 m.
• CA 10GBase-LX4 Transceiver Is operated with 62.5/125 cables up to 2 km.
• DA 10GBase-LR Transceiver is operated with 62.5/125 cables up to 500 m

• A
  76% (28)
• B
  16% (6)
• C
  5% (2)
• D
  3% (1)

Explanation

Mode Conditioning Patch Cables (MCPs) are used in situations where long wavelength laser transceivers, such as the 1000Base-LX, are deployed over multimode fiber types like the 62.5/125 µm. The 1000Base-LX transceivers are designed primarily for use with single-mode fiber, but they can operate over multimode fiber using an MCP. The MCP is necessary because the core size of multimode fiber (62.5/125 µm) is significantly larger than that of single-mode fiber, which can lead to modal dispersion when a single-mode laser signal enters the multimode fiber. This dispersion can degrade the signal quality over longer distances. The MCP mitigates this issue by aligning the single- mode laser output from the transceiver to a specific launch point in the multimode fiber, thus minimizing dispersion and allowing for effective data transmission over distances up to 500 meters.

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