A UDWT Technique to Improve the Optical Signal Denoising Effect

Fiber signal denoising technology is one of the key technologies the OTDR or distributed fiber optic sensors, fiber optic equipment. Actual project application, proposed an improved undecimated discrete wavelet transform (UDWT) denoising technology, relative to traditional wavelet transform denoising technology, has the following characteristics: Denoised curve is more smooth; Better peak detection capability; Better small attenuation maintain capability; Better denoising capability. This technology has achieved very good results in OTDR equipment, beside it can be applied to other optical signal processing.