Transmission system for digital TV-signal distribution through a passive optical network in the microwave S-band

In this paper a practical application of an electrooptical communication system based on external modulation is reported. The sixteen ATSC TV-channels located at 2.4 GHz, were transmitted over a 30 km of standard optical fiber. The transmitted TV-signal uses Single-Side Band Full Carrier (SSBFC) modulation, allowing in this way an adequate management of the transmitted power and the bandwidth. The efficient use of the available bandwidth of the electro optical system is achieved using two Low-Pass Filters (LPFs). Two seventh-order microstrip Chebyshev LPFs are designed and fabricated to select the signals to be transmitted through a point-to-point Passive Optical Network (PON). The experimental results allow this electro-optical communication system located in the field of radio over optical fiber shows that can be used as an alternative means for transmission of multimedia data with potential applications in a PON.