Demonstration of an All-Optical OCDMA Encryption and Decryption System With Variable Two-Code Keying
| Autor: | Paul R. Prucnal, Konstantin Kravtsov, Natalie Kostinski |
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| Rok vydání: | 2008 |
| Předmět: |
Optical amplifier
Demultiplexer Code division multiple access business.industry Computer science Physics::Optics Keying Cryptography Exclusive or Encryption Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials Fiber Bragg grating Electronic engineering Electrical and Electronic Engineering business Computer Science::Cryptography and Security |
| Zdroj: | IEEE Photonics Technology Letters. 20:2045-2047 |
| ISSN: | 1941-0174 1041-1135 |
| DOI: | 10.1109/lpt.2008.2006063 |
| Popis: | We demonstrate the first all-optical optical code-division multiple-access (OCDMA) encryption and decryption system with variable two-code keying. The nonlinear optical loop mirror (NOLM)-based exclusive or (xor) employed in encryption utilizes the shortest length silica-based nonlinear fiber element to date, enabling a compact architecture. Fiber Bragg grating arrays create wavelength-hopping time-spreading OCDMA codes from broadband pulses at output ports of the xor resulting in variable two-code keying, a code-switching modulation format characterized by a random alternation in bit representation and immunity to differential analysis unlike fixed two-code keying. The terahertz optical asymmetric demultiplexer employed in decryption shows mutual compatibility of nonlinear fiber-based and semiconductor optical amplifier-based NOLM configurations. Our architecture can potentially perform one-time pad encryption and decryption for unconditional security. |
| Databáze: | OpenAIRE |
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