Title :
Telecom-Band Directional Coupler Written With Femtosecond Fiber Laser
Author :
Eaton, S.M. ; Chen, W. ; Zhang, L. ; Zhang, H. ; Iyer, R. ; Aitchison, J.S. ; Herman, P.R.
Author_Institution :
Dept. of Electr. Eng., Toronto Univ., Ont.
Abstract :
A femtosecond fiber laser with 1-MHz repetition rate was optimized to write low-loss waveguides and directional couplers inside bulk borosilicate glass. For the first time, this three-dimensional writing method has produced low insertion loss and near-unity maximum coupling ratio. Results are presented at telecommunication wavelengths of 1310 and 1550 nm
Keywords :
borosilicate glasses; fibre lasers; high-speed optical techniques; laser materials processing; optical directional couplers; optical fabrication; optical glass; optical losses; optical waveguides; 1 MHz; 1310 to 1550 nm; borosilicate glass; directional coupler; femtosecond fiber laser; insertion loss; optical waveguides; three-dimensional writing method; Directional couplers; Fiber lasers; Glass; Laser modes; Optical fiber couplers; Optical sensors; Optical waveguides; Telecommunications; Ultrafast optics; Waveguide lasers; Buried optical waveguides; directional couplers; femtosecond laser writing; optical device fabrication; ultrafast laser processing;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2006.884241
