Yangtze Optical Fibre and Cable Joint Stock Limited Company

Mengxun Sun

Shengya Long

Runhan Wang

Mingfeng Mao

Hongyan Zhou

Zhiyong Wang

A single-mode fiber with a large effective area comprises a core layer and a cladding layer. The core layer is cladded with an intermediate cladding layer, and a depressed cladding layer is provided outside the intermediate cladding layer. The core layer comprises a first fiber sub core layer having a radius rof 1.5-5 &#x3bc;m and a relative refractive index difference &#x394;nof 0.05-0.22%, and a second sub core layer having a unilateral radial width (r&#x2212;r) of 1.5-5 &#x3bc;m and a relative refractive index difference &#x394;nof 0.15-0.34%, where &#x394;nis less than &#x394;n. Accordingly, the optical fiber can reach an effective area equal to or greater than 120 &#x3bc;mwhen the related parameters thereof are optimized.

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Hubei, China

Mengxun Sun