这些研究者通过改变光脉冲的强度来重编电码，比如，用高强度来表示1低强度来表示0。

These researchers were encoding digital data by varying the intensity of a pulse of light. For example, high intensity would represent a 1 and low intensity would represent a 0.

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为了解决这个问题，查莱特完善了一个使用光脉冲偏振和相位的系统，而不是它的强度，以此来记录电码。

To solve the problem, Charlet perfected a system that uses the polarization and phase of a pulse of light, rather than its intensity, to encode data.

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