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A novel kind of bend resistant large mode area fiber is proposed. With the introduce of a multi-layer core, this kind of fiber breaks the mode field area limitation for multi-trench fiber, and achieves a mode filed area of 1300 μm2 at a bend radius of 15cm.
A bend-resistant large mode area fiber with combination structure of multi-trench and leakage channel is proposed. In terms of the practical requirement for active fibers, the core region is designed with a higher refractive index than the pure silica, which allows the core to be highly doped with gain medium. In the meantime, a ring of high-index rods are introduced to work as the resonant ring,...
A bend resistant large mode area fiber with multitrench in the core is proposed. Four layers of trenches with high refractive index are introduced to modulate the mode field distribution. Low refractive index trenches in traditional designs are replaced with pure silica trenches to reduce the difficulty of manufacture. Meanwhile, the core region with a refractive index higher than pure silica cladding...
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