Put individual fibers into V-grooves made on some solid surface, which is the process of forming linear fiber array. Numbers and types of fibers, their spacing and core diameter and numerical aperture, or other ways of specifying the refractive index profile, which determines the mode structure, and fiber core positioning accuracy is also an important technical detail. Fiber diameter. Sometimes an optical fiber array can be formed by arranging multiple original-sized optical fibers. For some applications, smaller fibers and / or smaller core spacing are required, and correspondingly smaller fibers can be used directly or tapered fibers can be used.
FAU for Long-Haul and Metro Networks
The FAU unit may be placed in a reconfigurable optical add-drop multiplexer (ROADM). There are also some functions in long-distance and metro networks, and Fau unit plays an important role. It can be used as an optical transmission to remotely switch traffic from a wavelength division multiplexing (WDM) system at the wavelength layer.
High fiber placement tolerance linear arrays can be used in various industries, such as telecom, data transmission and switching, as well as for laser diode-pumped lasers and other general fiber instrumentation. Tight tolerances allow these V-groove arrays to provide accuracy to ensure the alignment of single-mode and multimode fibers within these modules.