This paper provides securing flowing of data in optical systems through encoding and steganography. Encoding (Cryptography) and steganography are major elements for secure the data. Suggested communication system aids for transporting huge volumes of information of quickly and reliably. This communication system has previously displayed unrivalled characteristics of most secure. Secure connection requires the integration of cryptography and steganography, so it is very difficult to penetrate it. The system program uses cryptography and steganography to merge any type from files and encrypted text that are effectually hidden for human eye with a carrier image. Also, the extra purpose from this paper is to procure the threshold losses of the optical system and introduce a new approach to create an ideal system that can effectively secrete a message that includes important information, if and only if the optical cable losses increase by its threshold magnitude.

Laser fence is a mechanism used to detect objects that passes vision line between the laser source and optical detector. While, Motion detection theory is the operation of detecting a variation in the location of a body relative to its environment or a variation in the circumference relative to a body. Therefore, this work provides an intelligent link between those two methods using optical communication, by using a new method for detecting moving objects from static background based on different window frames, which achieves the most efficient security system based on high assessment. This assessment was achieved by using visual basic language to evaluate the system. The system program is by using c# as program language to detect a penetration.