Measurement Technology in Optical Fibers and Optical Transmission Systems

The main methods of optical fiber metrology are described. Measurement of the breakage profile (near-field method, beam breakage method), attenuation measurement (cutting and insertion methods), and dispersion measurement in optical fibers are explained in detail. In particular, backscatter measurements (OTDR) of fiber parameters (connector, splice, partial, or complete breakage of the fiber, attenuation layer) are explained using numerous examples. The pulse-echo method is described as a simplified version of the OTDR technique. The transmission quality is realized by measuring the bit-error rate (BER) and the receiver sensitivity as well as the eye diagram technique.