Abstract
We present a design of a bending-insensitive single-mode photonic crystal fiber (PCF) based on the existence of a triangular core formed by three neighboring air holes missing in the center of the fiber, and two cladding layers of air holes with different diameters. By optimizing the design parameters, the designed PCF with bending-insensitive characteristics can match the requirements of fiber to the home applications very well. Simulation results show that the designed PCF has an effectively single-mode operation, a small bending loss below 0.15dB/m for the bending radius of 5mm, as well as a stable effective mode area of 80μm2 whatever the designed PCF is straight or bent, which can connect well with conventional single-mode fibers (SMFs).
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