United Optical provides a variety of optical fibers and optical fiber components and optical fiber communication instruments, including nufern fibers, QBH fiber optic connectors, WDM wavelength division multiplexers, fiber polarization maintaining isolators, fiber polarization maintaining jumpers, fiber circulators, and fiber taper couplings It provides basic tools for building fiber optical paths such as optical fiber detectors, and provides optical measurement equipment, light source lasers, photodetectors, fiber delay devices, fiber amplifiers, photoelectric modulators and other instruments and equipment. It can be used to couple optical input or output, protect and install fiber optic applications, and optical device testing, laser modulation and probing solutions.