The channel of an optical transmission line of coherent narrowband analog signal consisting of a continuous-wave laser, an electro-optic modulator, and a vector phase rotator based on electrically controlled fiber-optical 1 x 2 splitter and fixed delay lines is analyzed. The scheme is constructed from commercially available components used in digital optical communication systems. The applicability of components for analog and small-signal circuits is determined. Variation of radio signal phase in the range from 0A degrees to 170A degrees for radio signal frequencies between 1 and 2 GHz is demonstrated experimentally. It is shown that phase variation is a linear function of frequency in this range.
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机译：分析了相干窄带模拟信号的光传输线的信道，该信号由连续波激光器，电光调制器和基于电控光纤1 x 2分束器和固定延迟线的矢量相位旋转器组成。该方案由数字光通信系统中使用的市售组件构成。确定了用于模拟和小信号电路的组件的适用性。实验证明了无线电频率在1至2 GHz之间时，无线电信号相位在0A度至170A度范围内变化。结果表明，在该范围内，相位变化是频率的线性函数。
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