In this paper,through the basic theor y of electromagnetic field,using the scalar wave equation,we analyze and calcul ate a kind of novel ultra-large-area optical fiber waveguide.The fiber′s core index is 1.46116,and its diameter is 13.99μm.In its inner cladding,there is a low-refractive-index ring,its refractive index is 1.45562,and its width is 6.95μm.Then the continual chemical vapor deposition process is used to fabricate the novel fibe r.Its cladding diameter is 125μm.The measuring results show that the fibers have superior performance,including ult ra-low loss and ultra-large area characteristics.Their typical attenuation coefficients are 0.165dB/km and 0.179dB/ km at 1550nm and 1625nm,respectively.The mode-field diameter at 1550nm wavelength is 13.96μm,and the effective area is 153μm². Moreover,the novel optical fibers have outstanding anti-bending performance: on the condition of 30mm bending radius and 100turns,its bending additional losses are 0.032dB and 0.093dB at 1550nm and 1625nm,respectively.Comprehensi ve tests show that their key technological specificatio ns are much better than the international technological level at present,and they can meet the demands o f 400Gbit/s high-data-rate optical communication network.The novel optical fibers could be the key and funda mental materials for the next generation high-rate fiber communications.