RRB JE CBT 2 - Electronics Practice Questions - RRB Junior Engineer CBT 2 - Electronics & Allied Engineering Exam

In optical fiber cables (OFC), what is the primary purpose of applying index-matching gel during mechanical splicing?

To lubricate the fiber for easier alignment inside the splice tray To minimize reflection losses by matching the refractive index of the fiber core To protect the exposed silica cladding from moisture and mechanical stress To act as a permanent adhesive to bond the two fiber ends together

Correct Answer:

To minimize reflection losses by matching the refractive index of the fiber core

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