Microbend gratings were fabricated inside bulk glass via direct writing with femtosecond pulses from a multi-pass-cavity Ti:S laser. Critical periods, with maximum transmission loss, existed and shifted with waveguide refractive index, like fiber microbend gratings.
© 2007 OSA
(140.0140) Lasers and laser optics : Lasers and laser optics
(140.3390) Lasers and laser optics : Laser materials processing
(230.0230) Optical devices : Optical devices
(230.4000) Optical devices : Microstructure fabrication
J. Chung, Y. Gu, and J. G. Fujimoto, "Microbend Gratings Fabricated in Glass Substrates via Direct Writing with Near-Infrared Femtosecond Pulses," in Conference on Lasers and Electro-Optics/Quantum Electronics and Laser Science Conference and Photonic Applications Systems Technologies, OSA Technical Digest (CD) (Optical Society of America, 2007), paper JThD90.