Paper Title
Study on Length Measurement Methods Using Optical Frequency Combs Modulated In The Radio Frequency Domain

Abstract
The optical frequency of an optical frequency comb can be expressed in terms of frequencies in the microwave band and is called a measure of light. Optical frequency comb devices are expensive laser transmitters, and they are difficult to conduct research using commercially available products. In this study, we measured distances using a low-cost optical frequency comb device and quantitatively evaluated the error. To measure the phase difference, we adjusted the electrical signal using a frequency doubler, double-balanced mixer, and preamplifier. Keywords - Measurement, Frequency Comb, Repetition frequency.