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← ScienceWhich mechanism increases signal clarity when transmitting polarized light through birefringent fiber?
A)Polarization-maintaining fiber refractive index matching✓
B)Increased stimulated Brillouin scattering threshold
C)Reduced chromatic dispersion effects
D)Enhanced four-wave anti-Stokes mixing
💡 Explanation
Polarization-maintaining fiber utilizes stress-induced birefringence, a form of form birefringence; this confines light to one polarization mode due to differential refractive indices, thus this mode propagates without polarization mode dispersion because it actively reduces cross coupling, therefore this ensures signal clarity, rather than alternatives like scattering which degrade clarity.
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