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launch angle

The term coupling angle is used for optical waveguides

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Acceptance angle in optical fib

Acceptance angle in optical fib

ers The coupling angle is the angle between the propagation direction of the incident light and the optical axis of the optical fiber. In order for the incident light to be coupled in, the coupling angle must be between 0 degrees and a maximum value that depends on the location on the fiber face, or its refractive index with respect to the cladding glass. An increase in the coupling angle leads to the critical angle and thus to the acceptance angle, i.e. the angle at which the light does not exit the optical waveguide.

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Englisch: launch angle
Updated at: 29.01.2021
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