Design of pseudo-symmetric high bit rate, bend insensitive optical fiber applicable for high speed FTTH

In this paper, with sophisticated modification on modal-field distribution and introducing new design procedure, the single-mode fiber with ultra-low bending-loss and pseudo-symmetric high bit-rate of uplink and downlink, appropriate for fiber-to-the-home (FTTH) operation is presented. The bending-loss reduction and dispersion management are done by the means of Genetic Algorithm. The remarkable feature of this methodology is designing a bend-insensitive fiber without reduction of core radius and MFD. Simulation results show bending loss of 1.27 x 10(-2) dB/turn at 1.55 mu m for 5 mm curvature radius. The MFD and A(eff) are 9.03 mu m and 59.11 mu m(2). Moreover, the upstream and downstream bit-rates are approximately 2.38 Gbit/s-km and 3.05 Gbit/s-km. (C) 2014 Elsevier B.V. All rights reserved.