The Fabrication And Applilcation Of Silica Nanometre Optical Waveguide

Microelectronics, optoelectronics and photonics give the most important support to the modern optical communication and optical sensor industry. With the development of the devices design theory, the technique of fabrication and the higher requirements to the performance and energy loss, it is the trend to decrease the dimension, increase the integration and mix to integrate the optical devices, microelectronics and optoelectronics devices together. The method to solve the problem is to make the width of optical waveguide close to the nanometer domain. Because of the higher precision, it is also the challenge to fabricate optical waveguide with the submicrometer diameter and low loss.The thesis mainly researches the fabrication of the silica nanometre optical waveguide. It brings forward a fire heated blue gem controlled temperature one pulling method after lots of experiments. With this method, it can fabricate the long silica nanometre optical waveguide with homogeneous diameter. Its diameter is about a certain nanometers with smooth surface of atomic magnitude. Light can be direct or coupling inputted to the waveguide. The waveguide also supports single and multiple mode according to the wavelength of light and the diameter of the waveguide core. With plenty of experiments and theory analysis, the evanescent wave of the nanometre waveguide has been discovered. As more, the thesis analyses the optical performance of the silica nanometer optical waveguide and tests the transmission loss according to the experiments. At last, the thesis gives the expectation in the domains of optical sensor, microelectronics devices, nonlinear optics and others because of its nice performance—small dimension, high toughness and evanescent wave coupling.