Coupling Efficiency In A Holocoupler-Optical Fiber System

Single-image and double-image holographic coupler/optical fiber: a comparative study

“…The optimization parameters were deduced from the analysis of the coupling conditions, namely, refractive-index distribution of the optical fiber, polarization state of the reference wave, geometric configuration of the object wave, angle of incidence, and the absorption coefficient of the photomaterial. 8 In this paper we undertake a comparative study of single-and double-image recording procedures and analyze the linear behavior of the second case by applying the Fourier-transform operator to the coupling equation. This analysis in the spatial frequency domain provides information on the amount of energy processed in the holocoupling procedure.…”