本論文將4通道 25-Gbps高頻傳輸線整合於軟性電路板中，此設計作為連接接收端光偵測器、轉阻放大器(TIA)與發射端垂直共振腔型面射型雷射(VCSEL)、積體驅動晶片(Driver IC)之間的高頻訊號傳輸。而再將上述元件與高分子聚合物波導與45˚反射面共同整合在軟性電路板上。 此論文評估與分析用於軟性電路板上之高頻傳輸線，包含單端訊號傳輸線(Single-Ended)與差動訊號傳輸線(Differential)的反射損耗(Return loss)與插入損耗(Insertion Loss)。 傳輸線係以共平面波導(Coplanar Waveguide)形式設計。經由高頻模擬，在操作頻率0~62.5 GHz中，發射端與接收端之單端式高頻傳輸線反射損耗均小於 -4 dB，插入損耗皆大於-2.8 dB。而另一方面在操作頻率0~62.5 GHz，中，差動式高頻傳輸線反射損耗皆小於 -6 dB，插入損耗皆大於 -1.7 dB。 ;In this paper, the 4-channel 25-Gbps high-frequency transmission line is integrated into the flexible circuit board. This design is used as a high frequency transmission line between a receiver-side photodetector, a transimpedance amplifier (TIA) and a transmitter-side Vertical Cavity Surface Emitting Laser (VCSEL), and an integrated driver chip.And then the above elements and polymer waveguide and 45˚ reflective surface common integration in the flexible circuit board. This paper evaluates and analyzes high frequency transmission lines for use on flexible circuit boards, including the single-ended transmission line and differential transmission line of the return loss and insertion loss. The transmission lines are designed in the form of a coplanar waveguide. Through the high frequency simulation, the operating frequency of 0 ~ 62.5GHz The single-ended transmission line return loss of the transmitter and the receiver is less than -4 dB, the insertion loss is above -2.8 dB. On the other hand, in the operating frequency of 0 ~ 62.5 GHz, the differential transmission line return loss is less than -6 dB, insertion loss are more than -1.7 dB.