Optical waveguide spectral attenuation using an OTDR

Details Optical waveguide spectral attenuation using an OTDR Optical waveguide spectral attenuation using an OTDR

1994-06-29

1996-07-09

McGraw, Vincent P.

Optics: measuring and testing

For optical fiber or waveguide inspection

G01N 2127

Patent

active

055349943

ABSTRACT:
The present invention relates to 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 of 1200 nm to 1600 nm, which includes the operating windows about the wavelengths 1310 nm and 1550 nm. A particularly accurate spectral attenuation curve is obtained using OTDR measurements at 1310 nm, 1410 nm, and 1550 nm.

REFERENCES:
patent: 4183666 (1980-01-01), Tahara et al.
patent: 4737026 (1988-04-01), Dalgoutte et al.
patent: 4737027 (1988-04-01), Maeda
patent: 4838689 (1989-06-01), Neumann
patent: 5032025 (1991-07-01), Bateman
"Spectral Attenuation Modelling with Matrix Methods", T. A. Hanson, Conference Digest, NPL Optical Fiber Measurement Conference, York, U.K. pp. 8-11, 1991.

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