Assuming the fiber optic TV box picks the channel, you'll simply need a distributor for whatever type of output the box has. For example, if you are using an HDMI output on the fiber optic box, you'll need a distributor that has one HDMI input, and at least two HDMI outputs. If the TV box has more than one type of output - for example, an HDMI, and a set of three A/V jacks - you might be able to hook up one TV with out of those outputs, and another with the other.