Grounding/Bonding Fiber Optic Internet Line

I am hoping to learn if there is any electrically conductive material used in the construction of the fiber optic line that is run from the service panel at the street up to my house. I noticed that there is not a ground from the box that AT&T installed on my house down to any ground rod. I understand that there there are different methods that the manufacturers of the fiber optic line use to protect the cable. It is my understanding that some use a metallic material where others use a dielectric protection. I have some very expensive equipment in my home office and I have gone through extensive measures to add the appropriate grounding/bonding practices to provide the best protection that is possible within my means. All service that enters my home goes through a single point ground panel which is bonded to a ground electrode driven 8 feet into the ground. This ground electrode is also bonded to the two electrodes at the main service entrance. 

Can someone confirm either the type of fiber optic cable that is used by AT&T and/or whether or not it is electrically conductive and should be incorporated into single point ground panel or if this is unnecessary due to the construction of the line that is used. I am guessing that AT&T would have grounded it if it was necessary, but I just don't want to take any chances after going through such measures to protect everything inside.

Thank you.