Research Of New Polymer Optical Waveguide

With the progress of modern society, the development of communication towards largecapability and long distance has become an inevitable trend. There are many factorsrestricting the development of electrical interconnection. Optical interconnection is expectedto be the technology required because of its many advantages. Its advantages include lowloss, high capacity, wide bandwidth, no crosstalk, freedom from electromagnetic interference,and so on. Optical waveguide is an important device in optical interconnection. There aremany materials of optical waveguide, for example, LiNbO3crystal, semiconductor material,polymer material. Because of its simple process, low price, ease of integration, small drivevoltage, polymer material has attracted wide attention. In recent years, polymer opticalwaveguide has become a research hot topic.In this thesis, we use geometrical optics method and wave optics method to analyze theplate waveguide. We also introduce Marcatili method to analyze the rectangular waveguide.Afterwards, we use OptiBPM software to simulate rectangular waveguide, trapezoidwaveguide, graded-index waveguide. We focus on the simulation of graded-index waveguide.The result of simulation validates that the transmission loss of graded-index waveguide ismuch lower than step-index waveguide. We analyze the factors that affect the lightpropagation characteristics, they are refractive index difference between the core layer andcladding, the tilt angle of trapezoid waveguide and parameter g. Finally, we discuss in detailmanufacturing process the optical waveguide mold and the optical waveguide. We also studyon analyzing the polymer material characteristics and adopt PDMS material, opticalwaveguide mold as a model, by doctor-balding technique, produce rectangular polymerwaveguide and measure the polymer optical waveguide, the transmission loss is0.3417dB/cm.