AN OPTICAL-FIBER DROPPING METHOD FOR RESIDENTIAL PREMISES EMPLOYING OPTICAL DROP WIRE STRANDED CABLE

This letter describes an efficient and economical method for dropping optical fiber to residential premises in which several fiber ribbons i n a distribution cable are assigned to one dropping point. The optical fiber cables for dropping, which contain mono-coated fibers, are then aerially installed between several poles from this point during initi al construction. One or two fibers in a cable are then branched and dr opped to a subscriber when the demand arises. When an optical drop wir e stranded cable is used as the optical fiber cable for dropping, the above method can be employed without the need for a fiber joint in the dropping portion. The tube stranding pitch of this cable is investiga ted theoretically and experimentally, and the cable is manufactured ba sed on the results. The transmission characteristics of the cable are confirmed to be stable.