METHOD AND SYSTEM FOR KEEPING TIME ALIGNMENT BETWEEN OPTICAL DATA MODULATION AND A PERIODICALLY MODULATED LIGHT SOURCE

摘要

A method and system is disclosed for making time alignment for a data transmission system. A first reference clock signal is provided to a first multiplexer coupled to a data modulator through a data driver, and a second reference clock signal is provided to a second multiplexer coupled to a clock modulator through a clock driver. Phase adjustment of the reference clock signal are conducted before the first reference clock signal is provided to the first multiplexer, wherein the phase adjustment aligns a timing of data modulated by the data modulator with a periodically modulated light source generated by the clock modulator.