Chinese Optics Letters, 2013, 11 (10): 102301, Published Online: Oct. 8, 2013
Buried waveguide in neodymium-doped phosphate glass obtained by femtosecond laser writing using a double line approach Download: 902次
Abstract
We fabricate a buried channel waveguide in neodymium-doped phosphate glass using a double line approach by femtosecond laser writing. Raman spectra reveal an expansion of the glass network in the laser irradiated region. Given the stress-induced positive refractive index change, waveguiding between two separated tracks is demonstrated. The refractive index difference profile of the waveguide is reconstructed from the measured near-field mode. Propagation loss is measured by scattering technique. Microluminescence spectra reveal that the Nd3+ fluorescence property is not significantly affected by waveguide formation process, which indicates that the inscribed waveguide is a good candidate for active device.
Xuewen Long, Jing Bai, Xin Liu, Wei Zhao, Guanghua Cheng. Buried waveguide in neodymium-doped phosphate glass obtained by femtosecond laser writing using a double line approach[J]. Chinese Optics Letters, 2013, 11(10): 102301.