We experimentally investigate the spectral characteristics of side-polished endlessly single-mode photonic crystal fibers of different polishing depths and radii of curvature that are important to mode field diameter, evanescent coupling, waveguide losses, higher-order mode excitation, and dispersion slopes of photonic crystal fiber components. A polished photonic crystal fiber with a greater polishing depth or a larger radius of curvature shows a more dispersive characteristic. In contrast to conventional single-mode fibers, in photonic crystal fibers the evanescent field is more strongly localized, and the propagating light can be more efficiently guided within the deformed core.
© 2006 Optical Society of America
Fiber Optics and Optical Communications
Original Manuscript: March 17, 2006
Revised Manuscript: May 3, 2006
Manuscript Accepted: May 8, 2006
Published: July 10, 2006
Nan-Kuang Chen and Sien Chi, "Influence of a holey cladding structure on spectral characteristics of side-polished endlessly single-mode photonic crystal fibers," Opt. Lett. 31, 2251-2253 (2006)