Let's get real, with fiber optics, there is no heat, there is no electromagnetic field, there is light going through a tube for god's sake. There is NO way to find it unless you know where they were buried. There isn't even metal, unless it's armored, which I seriously doubt.
Which is why I believe that this is true. Of course JDAM devices can't home in on fibre optic lines. But you can find out their location through the use of HUMINT, which the Mossad has in Iraq in spades. Find a node point, and crater the whole area. You're bound to disrupt the line.
BTW, the part about the Turks is true, I suspect. Reuters had this short blip about the Turks, which was immediately spiked, I guess. Freeper a_Turk followed up with his report from Turkey that a Turkish commando brigade had captured that airport.
Saddam hasn't struck back because he simply doesn't want to attack the Turk. That would be a very stupid thing for him to do.
Be Seeing You,
Chris