Hattori, HaroldoJagadish, ChennupatiTan, Hark Hoe2010-09-142010-12-202010-09-142010-12-20Journal of Applied Physics 102.8 (2007): 083109/1-80021-89791089-7550http://hdl.handle.net/10440/1088http://digitalcollections.anu.edu.au/handle/10440/1088This article analyzes compact laterally coupled distributed feedback DFB lasers with three defect regions. These devices are more flexible and smaller than conventional DFB lasers, having typical lengths between 20 and 50 m and a width less than 1 m lateral gratings are inserted in a single-mode waveguide . We optimize the defect regions to achieve an improved performance. In other words, an adequate choice of phase shifts may lead to single-mode operation, lower threshold optical power, higher quantum differential efficiency, and more uniform field distribution. This device is designed to operate under optical pumping.8 pageshttp://www.sherpa.ac.uk/romeo/index.php "Author can archive pre-print (ie pre-refereeing) … post-print (ie final draft post-refereeing) … [and] publisher's version/PDF. Link to publisher version … [and] Copyright notice required. Publisher's version/PDF can be used on … employers web site. " - from SHERPA/RoMEO site (as at 25/02/10) © 2007 The American Institute of Physics. "This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics." - from publisher web site (as at 04/05/10)distributed feedback lasersoptical pumpingwaveguides2007-10-2510.1063/1.28002852015-12-08