Title :
Post-Growth Fabrication and Characterization of Integrated Chirped Bragg Gratings on GaAs–AlGaAs
Author :
Strain, M.J. ; Sorel, M.
Author_Institution :
Dept. of Electron. & Electr. Eng., Glasgow Univ.
Abstract :
A fully post-growth integrated chirped Bragg grating (CBG) in III-V material is presented based on a tapered waveguide geometry. The deeply etched structure provides the high coupling coefficient required in CBG devices without recourse to overgrowth fabrication techniques and the taper method allows for arbitrary chirp functions to be implemented. A 5-nm stopband with 0.0335 ps/nm dispersion is demonstrated and DFB lasers based on the CBG structure are presented
Keywords :
Bragg gratings; III-V semiconductors; aluminium compounds; chirp modulation; distributed feedback lasers; etching; gallium arsenide; integrated optics; optical fabrication; optical fibre dispersion; quantum well lasers; GaAs-AlGaAs; III-V material; chirp functions; chirped Bragg ratings; coupling coefficient; deeply etched structure; distributed feedback lasers; integrated Bragg ratings; optical dispersion; post-growth fabrication; tapered waveguide theory; Bragg gratings; Chirp; Dispersion; Distributed feedback devices; Fiber gratings; Laser feedback; Laser theory; Laser tuning; Optical device fabrication; Optical pulse generation; Chirped gratings; dispersion compensation; distributed feedback (DFB) lasers; integrated optics;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2006.887199
