Open AccessDispersive-grating distributed feedback lasers
Author(s) -
Yanping Xi,
Xun Li,
Seyed M. Sadeghi,
WeiPing Huang
Publication year - 2008
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.16.010809
Subject(s) - optics , lasing threshold , grating , distributed feedback laser , laser , coupling (piping) , materials science , semiconductor laser theory , wavelength , tunable laser , diffraction grating , optoelectronics , physics , metallurgy
This paper proposed a novel distributed feedback (DFB) laser by incorporating a dispersive grating, whose coupling strength is dependent on the operating wavelength. Analysis of the laser threshold conditions shows that the proposed structure guarantees single-mode operation due to the inherent threshold gain discrimination on the two otherwise degenerated lasing modes.