EOSAM 2022
Open Access

Figure 9


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Measurement of phase birefringence B(λ0) of a PM fiber: (a) set-up with a moving crossed-polarization coupling; (b) resulting channeled spectrum (black sinusoidal curve) for a length Lf corresponding to a bright channel of order m for λ0; and shifted channeled spectrum (red sinusoidal curve) when the length is reduced by a quarter of the beat length Λ, i.e., is equal to Lf − (Λ/4).

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