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

Volume

21

Issue

5

fYear

2009

fDate

3/1/2009 12:00:00 AM

Firstpage

277

Lastpage

279

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;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2008.2010717

Filename

4738368