Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5442502 | Optical Materials | 2017 | 7 Pages |
Abstract
Low loss optical waveguides inside aluminosilicate glasses have been successfully fabricated using direct femtosecond laser writing. To establish the influence of pulse energy and host variations on the optical waveguides have been tentatively explored and systematically studied with the help of different spectroscopic techniques. Isochronal annealing treatment effectively reduces the insertion losses to 1.01 ± 0.28 dB at 632.8 nm. A red shift of the Raman band has been observed with increasing Al2O3 content due to the bond angle variations. The point defects such as non-bridging oxygen hole centers have been corroborated by the photoluminescence studies and significant red-shift has also been documented with increasing Al2O3 content. In addition, there is no NBOHC defects perceived after isochronal annealing treatment inside the glass waveguides. Our results envisage that the present glass waveguides should be promising and potential for applications in passive waveguides and integrated photonic devices.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
B. Hari Babu, Mengsi Niu, Xiaoyu Yang, Yanbo Wang, Lin Feng, Wei Qin, Xiao-Tao Hao,