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OPTICAL FIBER WITH LARGE MODE FIELD DIAMETER AND LOW MICROBENDING LOSSES

机译:光纤具有大模式场直径和低微型损耗

摘要

Optical fibers having a mode field diameter at 1310 nm of at least 8.8 μm, wire mesh covered drum microbending losses at 1550 nm less than 0.03 dB/km, and a 2 m cutoff wavelength less than 1320 nm. The fibers may include a central core region, an inner cladding region, an outer cladding region, a primary coating with an in situ modulus less than 0.20 MPa and glass transition temperature less than −35° C., and a secondary coating with an in situ modulus greater than 1500 MPa. The fibers may further include a depressed index cladding region. The relative refractive index of the central core region may be greater than the relative refractive index of the outer cladding region may be greater than the relative refractive index of the inner cladding region. The fibers may be produced at draw speeds of 30 m/s or greater.
机译:光纤在1310nm处具有至少8.8μm的模式场直径,金属丝网覆盖的滚筒微生物损失在1550nm小于0.03db / km,并且2 m截止波长小于1320nm。纤维可包括中心核心区域,内包层区域,外包层区域,初级涂层,原位模量小于0.20MPa和小于-35℃的玻璃化转变温度,以及其中的二次涂层原位模量大于1500 MPa。纤维还可包括抑制指数包层区域。中央核心区域的相对折射率可以大于外包层的相对折射率可以大于内包层区域的相对折射率。纤维可以在3​​0m / s或更大的拉伸速度下产生。

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