PASSIVE OPTICAL SPLITTER AND PASSIVE OPTICAL NETWORK SYSTEM

摘要

The present invention provides a passive optical splitter and passive optical network system. The passive optical splitter includes: at least two splitting single-mode waveguides, at least one combining single-mode waveguide and at least one tapered waveguide, wherein one end of the tapered waveguide is coupled to the at least two splitting single-mode waveguide respectively, the other end of the tapered waveguide is coupled to the at least one combining single-mode waveguide, and the core layer of the tapered waveguide is made from light-induced refractive index changeable material. Using the passive optical splitter and passive optical network system provided by the present invention, and using the core layer of the tapered waveguide of the passive optical splitter made from light-induced refractive index changeable material, the loss of optical signal leakage is reduced and uplink transmission efficiency is improved by increasing the refractive index difference between the positions with different light field intensity in the core layer to limit light transmission when light signals are transmitted.