Optical Cable Identifier,OClD was a specially developed instrument for telecommunications engineers and technicians to identify a desired target fiber optical cable, which is a user friendly,easy to operate and non-invasive to the optical fiber cables. It can be used in various environments,such as manholes, tunnels conduits and aerial.

Based on the properties of photo elastic effect,the OCID converts the coherent laser energy into visual or audio signal, so user can easily locate the target desired fiber in manholes,tunnels conduits,and aerial, etc. With the OCID,the user can easily recognize the target opticalcable from the rest by gently tapping them.