Does the optical cable have a shielding layer
Several layers of protective sheathing, depending on the application, are added to form the cable. Rigid fiber assemblies sometimes put light-absorbing ("dark") glass between the fibers to prevent light that leaks out of one fiber from entering another. It prevents the cladding from being damaged by shocks, nicks, scratches, and even dampness by acting as a shock absorber. Shielded cable is, simply, a cable with a conductive shield that protects against electromagnetic interference (EMI). This layer serves as a barrier against external noise like EMI and RFI, common in high-voltage, industrial, and medical environments.
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