Papers Published

1. Wang, S.C. and Cross, J. and Chai, S.M. and Lopez, A. and Park, J. and Ingram, M.A. and Jokerst, N.M and Wills, D.S. and Brooke, M. and Brown, A., Coupling efficiency of an alignment-tolerant, single fiber, bi-directional link, Proceedings - Electronic Components and Technology Conference (1997), pp. 30 - 36 [ECTC.1997.606133] .
   (last updated on 2007/04/16)

   Abstract:
   In this paper, we present a novel Fourier technique to calculate the emitter-to-fiber coupling efficiency between an incoherent source of arbitrary directivity and a multimode fiber. The technique expresses the 4-D integral that describes the coupling as a 2-D sum, and along with Fourier series expansion, the technique increases greatly the computational speed of emitter-to-fiber coupling calculations. We have simulation results of the emitter-to-fiber coupling analysis and coupling analysis for a single-fiber hi-directional link total using the Fourier technique. The results show that the large core plastic optical fiber gives rise to good emitter-to-fiber coupling alignment tolerance, but tends to overfill the detector and cause degradation in fiber-to-detector alignment tolerance. We find that a more directive resonant-cavity light emitting diode only improves emitter-to-fiber alignment tolerance slightly, though it can couple more light into the fiber.

   Keywords:
   Optical fiber coupling;Fourier optics;Cavity resonators;Light emitting diodes;Computational methods;