MFR

ofiber.cylinder_step.MFR(V)

Approximate the mode field radius for a step-index single mode fiber.

The approximation is fairly accurate for V>1. In the multimode range (V > 2.405), it applies to the fundamental mode.

D. Marcuse, “Loss analysis of single-mode fiber splices”, Bell Syst. Tech. J., 56, 703 (1977)

Parameters:

V – V-parameter of the fiber [–]

Returns:

approximate mode field radius normalized by the core radius [–]