Stealth transmission of 127-chip SSFBG EPS-TPE/D OOK-OCDM secure signal over a public 2-wavelength WDM network

A semi-physical simulation was proposed on stealth transmission of 10Gbps 127-chip superstructure fiber Bragg grating (SSFBG) based equivalent phase shift (EPS) temporal phase encoded/decoded (TPE/D) on-off keyed (OOK) optical-code-division multiplexing (OCDM) secure signal over a 2-wavelength 10Gbps wavelength division multiplexing (WDM) public network. Secure signal can be error-free transmitted beneath the noise floor of 2-wavelength public WDM network both in temporal and frequency domain. The decoding performance of secure signal was highly affected by wavelength space between public and stealth channel. The power penalty of each WDM channel was less than 0.1dB due to existence of secure signal.