Jay Patel, a senior analyst for the Yankee Group's Carrier Convergence Infrastructure research and consulting practice, states, "Network operators are facing the challenge of deploying increasingly higher-bandwidth networks at increasingly lower costs. Further, these networks respond poorly to the operators' need for dynamic bandwidth, resulting from either a change in bandwidth demands or network failures. Existing networks are also technologically inflexible in providing next-generation optical services such as bandwidth-on-demand. In other words, though high-capacity networks, they are static, not dynamic, and certainly can use some more intelligence." Patel adds: "Tunable lasers address the issues faced by network operators and present those operators with promising opportunities for the future."