Dispersion-optimized bend-insensitive optical fiber

• Main Authors: WANG RUICHUN, LIU SHANPEI, HUANG LIWEI, WU JUN, LEI HANLIN, CAO BEIBEI, GU LIXIN, ZHU JIHONG
• Format: Patent
• Language: Chinese; English
• Published: 09.11.2021
• Subjects: OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICS; PHYSICS

The invention discloses a dispersion-optimized bending-insensitive optical fiber. A transition sunken cladding is arranged between a core layer and a sunken cladding, and the relative refractive index difference of the transition sunken cladding continuously changes from 0% to the relative refractive index difference of a junction point of the sunken cladding from inside to outside. According to the invention, the waveguide dispersion and macro-bending performance are balanced and optimized by adopting the double sunken claddings, so that the dispersion coefficient of the optical fiber is reduced on the premise that the bending performance of the optical fiber is not influenced; wherein the refractive index of the transition sunken cladding between the core layer and the sunken cladding changes continuously, so that waveguide dispersion caused by the refractive index difference between the core layer and the cladding in the waveguide structure is reduced, the refractive index distribution and width of the tra