Title :
Chirped Bragg Grating Waveguides Directly Written Inside Fused Silica Glass With an Externally Modulated Ultrashort Fiber Laser
Author :
Zhang, Haibin ; Herman, Peter R.
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Toronto, Toronto, ON
fDate :
3/1/2009 12:00:00 AM
Abstract :
A modulated fiber laser provided burst-trains of femtosecond pulses to directly write linearly chirped Bragg grating waveguides inside bulk fused silica glass in a single process step. The results represent the first demonstration of chirped gratings embedded in bulk glass with an ultrafast laser. Simple exposure controls offer facile means for tuning spectral and dispersion responses in three-dimensional optical circuits.
Keywords :
Bragg gratings; fibre lasers; laser materials processing; laser tuning; optical fabrication; optical fibre dispersion; optical glass; optical modulation; optical pulse generation; optical waveguide components; silicon compounds; SiO2JkJk; direct laser writting; dispersion responses; externally modulated ultrashort fiber laser; femtosecond pulse burst-train generation; fused silica glass; laser exposure; linearly chirped Bragg grating waveguides; spectral tuning; three-dimensional optical circuits; Bragg grating waveguide (BGW); chirped grating; femtosecond laser writing; optical device fabrication; optical filter; ultrafast laser processing;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2008.2010717
