New approaches to fabric fused-fiber M-Z interferometer type interleaver

Abstract

The interleaver component, which enables very-high-channel-count Dense Wavelength division multiplexed (DWDM) systems and is widely applied in mux/demux system, is a kind of photon-component without source. One type of them is a fused-fiber Mach-Zehnder interferometer. Because of its all-fiber design, it has very low loss, uniform response over a wide wavelength range, very low dispersion, and minimal polarization-dependence effects. In this paper, we put forward and study a novel approach to fabric an interleaver. The method enables real-time measurement and control, and it obtains more flexibility and reduces the cost in procedure. Analysis and numerical simulation results in the paper have some directive significance for practical fabrication of interleaver.