What is the relationship between refractive index (n₁) of core and refractive index (n₂) of cladding for an optical fiber?

Rayleigh scattering is a ________.

What does TPON stand for?

When microwave frequency rather than radio frequency subcarriers are employed, the strategy is usually referred to as ______.

Quantum efficiency (η) is defined as

The refractive index is defined as the ratio of ____________.

Rayleigh scattering is a ________.