Optical waveguide spectral attenuation using an otdr

Details Optical waveguide spectral attenuation using an otdr Optical waveguide spectral attenuation using an otdr

G - Physics

01

M

G01M 11/00 (2006.01) G01M 11/02 (2006.01)

Patent

CA 2148534

A method of measuring spectral attenuation of an optical waveguide fiber using an OTDR. The spectral attenuation curve is generated by analyzing OTDR data taken at three or four wavelengths. There is particular interest in the wavelength range 1200 nm to 1600 nm, which includes the operating windows about the wavelengths 1310 nm and 1550 nm. An accurate spectral attenuation curve is obtained using OTDR measurements at 1310 nm, 1410 nm and 1550 nm. The inventive method is accurate, fast and lower in capital and maintenance costs.

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