We analyze the performance of distributed-feedback lasers with special grating structures. These grating structures consist of subgratings with different lengths (that are integer multiples of a reference length) and∕or different phase shifts (that are also integer multiples of a reference phase shift). These grating structures can provide transmission peaks with high quality factors, which may be useful for distributed-feedback lasers. To assess the usefulness of these devices, threshold and steady-state analysis are performed for a few selected examples. A given design example is shown to provide a low threshold without major variations in photon density along the device.
© 2007 Optical Society of America
Original Manuscript: June 9, 2006
Manuscript Accepted: October 26, 2006
Published: February 20, 2007
Haroldo T. Hattori, Vitor M. Schneider, and Carmem Lúcia Barbosa, "Analysis of distributed-feedback lasers with fractionally organized gratings," Appl. Opt. 46, 1283-1289 (2007)