We report development of a new kind of micro-optical waveguide based on liquid core in a V-groove glass and air cladding and a similar finite element method was constructed to investigate the guiding properties such as mode distribution and modal birefringence. Through the detailed modeling, we investigate the role of each parameter such as, refractive index of core and diameter of core of V-groove structure. This work demonstrates numerically and experimentally high birefringence in this optical waveguide and different aspects of the fiber properties related to the fundamental mode and fiber birefringence are revealed. As a result, wave-guide with large birefringence is identified for opening angle of 40 degree and refractive index of 1.472.
We present spectral analyses of an optical fiber waveguide containing a DNA-based solution as the optical core material, as well as separately derived optical dispersion curves for several candidate solutions. Using an Abbe refractometer and a supercontinuum light source, the visible refractive indexes of DNA-toluene, DNA-CTMA-butanol, DNA-CTMAethanol, and DNA-CTMA-HFIP solutions are measured at several concentrations and several wavelengths. The optimal solutions for light guiding are injected into hollow optical fiber waveguides, and the transmission spectra are measured by optical spectrum analyzer.