Processing technique of interference images at the control of parameters of an optical fiber components surfaces

The control of a critical surfaces condition of fiber optic components is carried out by a method of a two-beam interference under the scheme of Michelson interferometer. Ratios that connect surfaces form parameters with characteristics of interference images are resulted. The technique of useful information component distinguishing from a mix of interference signal with noise and a background of measurement that is based on use of bandpass Butterworth filters is offered and investigated.