Which outcome results when increased mechanical stress aligns polymers within optical fiber?

💡 Explanation

Increased stress causes polymer alignment thereby increasing stress-induced birefringence, because of the photoelastic effect. This alters polarization and refractive indices, therefore light propagation changes are observed, rather than improved clarity. Other options require separate mechanisms.

• Which consequence results when sputtering target's magnetic field weakens?
• Which outcome results when strain is added to certain piezoelectric crystals?
• Which outcome occurs within a mass spectrometer when analyzing isotopes?
• Which pattern appears due to increased stress in photoelastic materials?
• Which outcome arises from a sustained *stimulated emission* within a fusion reactor plasma?
• Which outcome limits operational efficiency of hydrogen fueled internal combustion engines running lean?