The improved resonator structure utilizes radial Bragg reflectors in order to confine {HEAD ~ the light} in {TAIL ~ a guiding defect} 
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The improved resonator structure utilizes radial Bragg reflectors in order to confine { HEAD ~ the light } in { TAIL ~ a guiding defect }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL