Title :
Novel Frequency Chirp Compensation Scheme for Directly Modulated SG DBR Tunable Lasers
Author :
Maher, Robert ; Shi, Kai ; Anandarajah, Prince M. ; Kaszubowska, Aleksandra ; Barry, Liam P. ; Yu, Yonglin
Author_Institution :
Res. Inst. for Networks & Commun. Eng., Dublin City Univ., Dublin
fDate :
3/1/2009 12:00:00 AM
Abstract :
The authors demonstrate a compensation scheme to reduce the frequency chirp associated with directly modulated sampled grating distributed Bragg reflector tunable lasers. Experimental results obtained show that the direct modulation of the laser´s gain section results in a large frequency chirp of 25 GHz. However, by simultaneous modulation of the laser´s phase section this large frequency chirp can be significantly reduced.
Keywords :
chirp modulation; compensation; diffraction gratings; distributed Bragg reflector lasers; laser tuning; direct modulation; distributed Bragg reflector lasers; frequency 25 GHz; frequency chirp compensation; laser phase section; sampled grating; tunable lasers; Direct intensity modulation; frequency chirp; optical fiber communications; tunable laser (TL); wavelength-division multiplexing (WDM);
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2008.2011650
