The loss characteristics of two kinds of typical single-HE<sub>11</sub>-mode Bragg fibers based on PES/As<sub>2</sub>Se<sub>3</sub> and Si/SiO<sub>2</sub>-multilayer claddings are analyzed theoretically. The available lowest loss levels and corresponding structure parameters of the two single-HE<sub>11</sub>-mode Bragg fiber are optimized to show the feasibility of the low-loss single-HE<sub>11</sub>-mode Bragg fiber design under the two material systems. The influences of structure parameters on the loss characteristics are analyzed in detail. For PES/As<sub>2</sub>Se<sub>3</sub> Bragg fiber, a loss level as high as 10<sup>5</sup>–10<sup>7</sup> dB/km is expected at wavelengths from 0.85 to 2.94 μm due to the large absorption loss. To extend the limitation, lower loss cladding material should be investigated. For Si/SiO<sub>2</sub> Bragg fiber, low-loss single-HE<sub>11</sub>-mode propagation can be achieved by the materials if fabrication improvement can support long fabricated fiber length.
© 2007 IEEE
Guangyu Xu, Wei Zhang, Yidong Huang, and Jiangde Peng, "Loss Characteristics of Single-HE11-Mode Bragg Fiber," J. Lightwave Technol. 25, 359-366 (2007)