Question

difference between linear and nonlinear scattering​

Answer 1

EXPLANATION:

In linear scattering, attenuation occurs when optical power is transferred from one mode to another keeping frequency unaltered.

Non linear scattering occurs when frequency is changed during optical power transfer. The two types of nonlinear scattering are stimulated Brillouin scattering and stimulate Raman scattering.

Answer 2

Answer:

Linear scattering results in power attenuation whereas non-linear scattering leads to power gain.

Explanation:

Linear scattering

• The optical (light) power contained in one propagating mode is linearly transferred to another mode as a result of linear scattering.
• As a result, some of the transferred power may escape to a radiation mode, where it will be absorbed without being reflected back, resulting in power attenuation.
• Example-Rayleigh Scattering, Mie Scattering

Non-linear scattering

• Any dielectric substance will exhibit a nonlinear effect when exposed to strong light. Since glass, a dielectric, makes up optical fibers, nonlinear scattering results.
• Nonlinear scattering is claimed to produce gain but with a shift in frequency.
• Example-Stumlated Brillion Scattering (SBS), Stimulated Raman Scattering (SRS), Self-Phase Modulation (SPM).

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