Study of spectral width effect on performance of steganography transmission with temporal phase optical CDMA

Optical code-division multiple-access technology is the key factor affecting the performance of optical steganography transmission system. The OCDMA technology based on equivalent phase-shifted encoder/decoder with low reflectivity for is presented in this paper, the performance of optical steganography transmission system is investigated with different input spectral width. The curves of the relationship between performance of steganography channel and its spectral width are obtained. From the analysis of simulation result, we can see when the spectral width meet some condition, “optimum” BER performance can be obtained, namely, a fixed value with the steganography pulse spectral width, will result in a better system performance.