optical networking photonic layer security (PLS)
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14-09-2009, 05:11 AM


optical code-division multiplexed (OCDM)-based photonic layer security (PLS) system for very high data rate systems, where electronic encryption becomes increasingly expensive and difficult.

Encryption OCDM-based PLS system, which is aimed at emerging 100 Gbps fiber networks, is accomplished by coding and scrambling the optical signal in such a way that the bits cannot be recovered nor be recorded for subsequent decryption. Telcordia has devised novel coding schemes and a compact, programmable coder, working with industry and university partners.in which optical frequency and phase are manipulated with high precision. In initial lab tests, OCDM-based PLS systems have demonstrated 40 Gbps optical encryption over distances up to 400km; researchers expect to demonstrate longer distances and higher bit rates (100 Gbps and beyond) in the near future. This protocol independent approach has also been shown to be compatible with conventional DWDM and optical networking.

"The ability of fiber-optics to support extremely high data rates is a double-edged sword because as these rates increase, existing electronic encryption schemes struggle to keep up. Furthermore, as the cost to purchase, deploy and manage protocol-dependent electronic encryptors increases dramatically, the value of an all-optical protocol-agnostic solution becomes obvious," "OCDM-based PLS systems provide a graceful yet powerful solution for securing fiber optic networks, even those with the most demanding throughput and security requirements."
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