Substitution method

In optical fiber technology, the substitution method is a method of measuring the transmission loss of a fiber. It consists of:

The substitution method has certain shortcomings with regard to its accuracy, but its simplicity makes it a popular field test method. It is conservative, in that if it were used to measure the individual losses of several long fibers, and the long fibers were concatenated, the total loss obtained (excluding splice losses) would be expected to be lower than the sum of the individual fiber losses.

单词	Substitution method
释义	Substitution method 英语百科 Substitution method In optical fiber technology, the substitution method is a method of measuring the transmission loss of a fiber. It consists of: The substitution method has certain shortcomings with regard to its accuracy, but its simplicity makes it a popular field test method. It is conservative, in that if it were used to measure the individual losses of several long fibers, and the long fibers were concatenated, the total loss obtained (excluding splice losses) would be expected to be lower than the sum of the individual fiber losses.
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