LOW LOSS OPTICAL WAVEGUIDES INSCRIBED IN MEDIA GLASS SUBSTRATES, ASSOCIATED OPTICAL DEVICES AND FEMTOSECOND LASER-BASED SYSTEMS AND METHODS FOR INSCRIBING THE WAVEGUIDES

摘要

medium writing method of a waveguide on a glass substrate generally has the steps of: while maintaining the focal point of the laser beam on a smaller depth than the surface, the femtosecond laser beam along the surface of the intermediate glass substrate relatively moving being dangyeyi, wherein the waveguide has, when measured at the wavelength of the optical signal propagating in the waveguide of the normal use of the waveguide, has a small loss than 0.2 dB / cm. In particular, the method can have a variety of write parameters according to whether single-mode or multi-mode is in the dopak. ;