| Summary: | 碩士 === 國立臺北科技大學 === 光電技術研究所 === 92 === In this paper, we propose variable methods and skills to improve ROF transport performances. We hope bring more convenience to everybody in the new generation of communication systems. First, we use double external light injection technique to improve system’s performances. By increasing laser’s frequency response and decreasing SOA’s saturation power, we can improve the system’s performance. Second, by using EAM and optical SSB, we can adjust the operation voltage of EAM to advance performances. Then, try to transport CATV and ROF signals at the same time. Third, we can integrate EAM on the full-duplex transport system and use OADM to reduce the cost. Then, judge the system’s performance by two tone testing. Fourth, use optical SSB modulator to decrease IMD3/C and BER in full-duplex system（IMD3/C＜ -70 dBc）. Finally, we use cheaper and easier operating FBG in ROF system and compare with optical SSB. We can get a low-priced and good performance（BER＜10-9）.
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