Curved-microfiber photon coupling for photonic crystal light emitter

Abstract

Highly-efficient evanescent coupling between a photonic crystal resonator and a curved fiber taper is demonstrated. The coupling is utilized to pump the photonic crystal laser and funnel its output photons through a single optical fiber, making it an all-fiber photon source. Photon collection efficiency of similar to 70% into the fiber and output power of 27 nW are achieved. Highly local pumping results in the record-low threshold of similar to 35 mu W. This scheme provides an ideal platform for an on-demand single photon source based on two-dimensional photonic crystal. (C) 2005 American Institute of Physics.