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OCR: WYOM DATA TRANSMISSION FLOW Data sources Receivers Wavelength Optical amplifiers multiplexer Demultiplexer Fiber transmission line Lasors (at various wavelengths) Figure 1. The WDM data flow process is relatively straightforward. Multiple wavelengths of light are consolidated and traverse a single fiber optic line. Amplifiers maintain the continuity of the signals, which are eventually split and sent to their final destinations.