Generation and transmission of high frequency radio signals through fiber links up to 125 km by means of the optical frequency multiplication technique

摘要

The transmission of 64 QAM radio data signals with a data rate up to 150Mb/s through long single mode fiber links at different frequencies has been experimentally evaluated. The system under study uses the optical frequency multiplication technique for the generation of carriers in the microwave and millimeter-wave bands. Transmission using frequencies of 18.7GHz, 19.5GHz, 19.7GHz and 29GHz is demonstrated for fiber links up to 125km, and up to 100km for transmission frequencies of 32.5GHz and 36.9GHz. A careful adjustment of the filter characteristics is crucial to fulfill the performance requirements.