Introduction

                                   ■   The  fibres are placed in a loose tube made of high modulus
                                         plastic. The tubes are filled with a water-resistant filling
                                         compound. A piece of Fibre Reinforced Plastic(FRP) locates
                                         in the center of core as a non-metallic strength member. The
                                         tubes and fillers are stranded around the strength member
                                         into a compact and circular cable core. The cable is completed
                                         with a polyethylene (PE) sheath.

                                   G652D fiber information

                                   ■   Mode field diameter (1310nm):9.2μm±0.4μm.

                                   ■   Mode field diameter (1550nm):10.4μm±0.8μm.

                                   ■   Cladding diameter:125μm±1.0μm.

                                   ■   Coating diameter:245μm±7μm.

                                   ■   Cut off wavelength of cabled fiber (λcc): ≤1260μm 

                                   ■   Attenuation at 1310nm:≤0.35dB/km.

                                   ■   Attenuation at 1550nm:≤0.21dB/km.
                                   ■   Bending loss at 1550nm (100 turns, 30mm radius):≤0.05dB.
                                   ■   Dispersion in the range 1288 to 1339nm：≤3.5ps/(nm·km).
                                   ■   Dispersion at 1550nm:≤18ps/(nm·km).
                                   ■   Dispersion slope at zero dispersion wavelength:≤0.092ps/(nm2·km).