K - L
Kerr effect.

The optical Kerr effect occurs when the index of refraction of a fiber optic varies with the intensity of the transmitted light. This is a nonlinear process that occurs when the product of the laser power and the effective system length becomes a significant fraction of the nonlinearity coefficient y.

line.

One or more SONET sections, including network elements at each end, capable of accessing, generating, and processing line overhead.

line amplifier.

A line amplifier is a multiwave device that amplifies signals. It does so to maintain signal strength over long distances. The line amplifier is also referred to as an optical line amplifier (OLA).

locked mode.

A VT mode that fixes the starting location of the VT SPE; locked mode ...

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