System and method for optical fiber

摘要

In one embodiment, an optical fiber includes a first layer having a first refractive index and a second layer surrounding the first layer, where the second layer has a second refractive index, an inner radius, and an outer radius. The optical fiber also includes a third layer surrounding the second layer, where the third layer has a third refractive index, where the first refractive index is less than the second refractive index, where the third refractive index is less than the second refractive index, and where a ratio of the outer radius to the inner radius is less than 1.5.

主权项

1. An optical fiber comprising:
a first layer having a first refractive index, wherein the first layer is air; a second layer surrounding the first layer, wherein the second layer has a second refractive index, an inner radius, and an outer radius; and a third layer surrounding the second layer, wherein the third layer has a third refractive index, wherein the first refractive index is less than the second refractive index, wherein the third refractive index is less than the second refractive index, and wherein a ratio of the outer radius to the inner radius is less than 1.5, wherein the optical fiber supports at least 16 orbital angular momentum (OAM) modes with a mode spacing between all of the at least 16 OAM modes of at least 1·10−4.