Abstract
The optical power confinement factor Γ is evaluated for TE, TM, and hybrid modes in a Bragg fiber. Results are also formulated for , the optical power confinement factor under the quarter-wave stack (QWS) condition. The nearly agrees with a maximum optical power confinement factor when fiber parameters are varied. For a sufficiently large core radius, expressions of have simplified forms and are represented in terms of the normalized core radius and fiber refractive indices. The is inversely proportional to the third power of the normalized core radius and to the normalized core radius, respectively, for the TE mode and for the TM and hybrid modes. The mode exhibits the highest optical power confinement factor among all the modes, as in the case of the circular metallic waveguide. The optimum value of the cladding lower index, for which the is maximized, is explicitly represented as a function of indices of the core and cladding higher-index layer.
© 2006 Optical Society of America
Full Article | PDF ArticleMore Like This
Jun-ichi Sakai, Jyumpei Sasaki, and Kouichi Kawai
J. Opt. Soc. Am. B 24(1) 20-27 (2007)
Jun-Ichi Sakai and Kazuki Kuramitsu
J. Opt. Soc. Am. B 25(3) 414-424 (2008)
Jun-ichi Sakai and Jympei Sasaki
J. Opt. Soc. Am. B 23(6) 1020-1028 (2006)