EOSAM 2022
Open Access

Figure 16


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Principle of PM fibers based on stress-induced linear birefringence: (a) SAPs (panda structure, here) are under quasi-isotropic tensile stress, and they pull on the fiber cladding; (b) in the core region, this yields tensile stress (red arrows) in the x-axis, and a compressive stress (blue arrows) in the perpendicular y-axis; (c) these stresses decrease when one moves away from the core, along the perpendicular y-axis.

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