Yangtze Optical Fibre and Cable Joint Stock Limited Company

Wu Yang

Gaoqing Lei

Wei Zheng

Beibei Cao

Kun Yang

Weijun Tong

Xinben Zhang

Zhendong Wang

Yilin Tong

Camera

A high bandwidth radiation-resistant multimode optical fiber includes a core and a cladding layer surrounding the core. The core is a fluorine-doped quartz glass layer with a graded refractive index distribution and a distribution power exponent &#x3b1; of 1.7-2.2. The core has R1 of 15-35 &#x3bc;m and &#x394;1%min of &#x2212;0.8% to &#x2212;1.2%. The cladding layer has an inner cladding layer having R2 of 15-38 &#x3bc;m and &#x394;2% of &#x2212;0.8% to &#x2212;1.2% and/or a depressed inner cladding layer having R3 of 15-55 &#x3bc;m and &#x394;3 of &#x2212;1.0% to &#x2212;1.4%, an intermediate cladding layer having R4 of 15.5-58 &#x3bc;m and &#x394;4 of &#x2212;0.7% to &#x2212;0.2% a depressed cladding layer hasving R5 of 16-60 &#x3bc;m and &#x394;5 of &#x2212;0.8% to &#x2212;1.2%, and an outer cladding layer sequentially formed from inside to outside. The outer cladding layer is a pure silica glass layer.

High bandwidth radiation-resistant multimode optical fiber

An anti-cracking panda-type polarization-maintaining optical fiber includes a cladding layer, stress layers, and a fiber core. The fiber core is located in the center of the cladding layer. The stress layers are located symmetrically at two sides of the fiber core with a distance away from the fiber core and are located within the cladding layer. Each stress layer is enclosed at edges of their outer sides by a transition layer with a gradient refractive index. By providing the transition layer with the gradient refractive index at the edge of the outer side of the stress layer, the pressure stress at the edge of the stress layer is decomposed and released, so as to avoid cracks at the edge of the polished stress layer on the end of the optical fiber, and thus optimizes the performance of the polarization-maintaining optical fiber by decreasing the room temperature polishing cracking rate.

Anti-cracking panda-type polarization-maintaining optical fiber

Growing community of inventors

Hubei, China

Wu Yang