Liu, DanyuHattori, HaroldoFu, LanJagadish, ChennupatiTan, Hark Hoe2015-12-13December 19781424473335http://hdl.handle.net/1885/83757In this article, we show that the introduction of a spiral waveguide to a GaAs microdisk that works both as a waveguide and circular Bragg reflector can improve coupling efficiency to almost 90%. The same structure with the addition of a taper can coupleKeywords: Coupling efficiency; GaAs; Microdisk laser; Microdisks; Slot waveguide; Spiral structures; Microelectronics; Waveguides201010.1109/COMMAD.2010.56997842016-02-24