The manufacturer of the WA-1600 Wavelength Meteris Exfo. WA-1600 Wavemeter systems are instruments designed for simple, automatic and accurate wavelength measurement of continuous wave (CW) laser sources. Wavemeter systems count interference fringes produced by the input laser radiation in a scanning Michelson interferometer and simultaneously count fringes from a built-in reference laser. The ratio of the fringe counts of the input laser and the reference laser provides the wavelength of the input laser. The product is located in Lake Mary, FL, USA.