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Evolving optical layer networking: What's happening on the ground

Optical bandwidth demands continue to increase, technology continues to advance, and the market continues to demand ever greater functionality at the optical layer. Starting with a discussion of the current market environment and the recovery of the optical industry from the bursting of the optical bubble, this paper will examine current trends in optical layer networking, including the technology supporting optical/data convergence and the development of digital wrappers via the Optical Transport Network as a vehicle to introducing manageable multiwavelength networks. The paper also examines automatically switched optical network (ASON)/generalized multiprotocol label switching (GMPLS) developments enabling dynamic transport networks.