Abstract
Security enhancement of stealth channel by combining time-domain spectral phase en/decoding (SPE/D) OCDMA scheme and group velocity dispersion is proposed and experimentally demonstrated. The time-domain spectral phase encoded OCDMA signal, which utilizes a linearly chirped fiber Bragg grating for pulse broadening and a high-speed phase modulator for SPE, has been stealth transmitted over a public wavelength-division-multiplexing network. Error-free transmission (bit-error rate < 10(-9)) has been achieved for both the public and stealth channel with 32-chip 40-Gchip/s gold codes.
Original language | English |
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Article number | 5451083 |
Pages (from-to) | 993-995 |
Number of pages | 3 |
Journal | IEEE Photonics Technology Letters |
Volume | 22 |
Issue number | 13 |
DOIs | |
Publication status | Published - 1 Jul 2010 |
Keywords
- Optical code-division multiple-access (OCDMA)
- Optical steganography
- Spectral phase en/decoding (SPE/D)