What is the difference between an optical power combiner and a 2x1 optical coupler?

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Can't spin-orbit coupling(SOC) be included in optical properties calculation in CASTEP?

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Evgeny Lonshakov

Types of fiber optic couplers include optical splitters, optical combiners, X couplers, etc. In your case (for same frequencies of signals) they will be equivalent. But it strongly depend on the what frequencies coupler was designed for.

Amit Kumar Garg

Hi.

Combiner combines the whole input powers coming at its input ports while in coupler, coupling coefficient decides how much fraction of power will combine.