Abstract
We consider large-mode-area photonic crystal fibers for visible applications in which microdeformation-induced attenuation becomes a potential problem when the effective area is sufficiently large compared to . We argue that a slight increase in fiber diameter can be used in screening the high-frequency components of the microdeformation spectrum mechanically, and we confirm this experimentally for both 15- and core fibers. For typical bending radii the operating bandwidth increases by approximately 3–400 nm to the low-wavelength side.
© 2003 Optical Society of America
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