Design of a bending-insensitive single-mode photonic crystal fiber

► We present the design of a bending-insensitive single-mode photonic crystal fiber. ► The designed PCF is actually an effectively single-mode PCF. ► The designed PCF can have a small bending loss below 0.15 dB/m at Rbend = 5 mm. ► The designed PCF have a stable effective mode area of 80 μm2.