Ring core optical fiber having sunk refractive indexes
A technology of refractive index and refractive index distribution, which is applied in the field of optical communication, can solve problems such as the limitation of the transmission distance of the ring-core optical fiber, and achieve the effect of increasing the transmission distance of the optical fiber and suppressing coupling and attenuation
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[0018] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the following will further explain how the present invention is implemented in conjunction with the accompanying drawings and specific embodiments.
[0019] figure 1 (a) is a cross-sectional view of the fiber, figure 1 (b) is the refractive index distribution diagram on the cross-sectional diameter line, such as figure 1 As shown, the ring-core optical fiber provided by the present invention has a design with a concave refractive index distribution, wherein the refractive index distribution can be a graded refractive index distribution, which can be represented by 5 or more segmented curves, and each curve satisfies the gradient curve Formula, smooth transition between curves. figure 1 In , the auxiliary line 1 marks the outer interface of the fiber cladding, 2 marks the outer interface of the fiber core, 3 marks the symmetry center of the c...
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