All-optical processing with molecular switches
All-optical processing with molecular switches
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DOI：
10.1073/pnas.062631199
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发表时间：
2002-04-16
影响因子：
11.1
通讯作者：
Giordani, S
中科院分区：
文献类型：
--
作者：
Raymo, FM;Giordani, S
随着电信技术的飞速发展，电信网络正逐步从电网络过渡到光网络。对提高传输容量和速度的迫切要求决定了这一趋势。事实上，编码在光信号上的大量数据可以长距离快速传输。通过光纤和光电交换机的组合，确保了它们在通信网络上沿沿着特定路线的传播。然而，越来越明显的是，路由电刺激和传播光信号之间的相互作用将无法支持不久的将来所需的每秒太比特的容量。电输入不能处理光信号可能具有的巨大并行性。必须开发利用光信号控制光信号的操作原理。分子和超分子开关是实现信息技术创新材料的有希望的候选者。二进制数字可以编码在其化学，电气或光学输入和输出中，以执行特定的逻辑功能。我们已经开发了一种简单的策略，通过使用光敏分子开关的光信号与光信号的门控。我们已经证明，与非，或非，和非操作可以实现专门的光输入和光输出耦合从一个到三个开关元件。我们非常简单的全光开关方法可能会导致新一代数字处理和通信技术设备的发展。
A gradual transition from electrical to optical networks is accompanying the rapid progress of telecommunication technology. The urge for enhanced transmission capacity and speed is dictating this trend. In fact, large volumes of data encoded on optical signals can be transported rapidly over long distances. Their propagation along specific routes across a communication network is ensured by a combination of optical fibers and optoelectronic switches. It is becoming apparent, however, that the interplay between the routing electrical stimulations and the traveling optical signals will not be able to support the terabit-per-second capacities that will be needed in the near future. Electrical inputs cannot handle the immense parallelism potentially possible with optical signals. Operating principles to control optical signals with optical signals must be developed. Molecular and supramolecular switches are promising candidates for the realization of innovative materials for information technology. Binary digits can be encoded in their chemical, electrical, or optical inputs and outputs to execute specific logic functions. We have developed a simple strategy to gate optical signals with optical signals by using a photoactive molecular switch. We have demonstrated that NAND, NOR, and NOT operations can be implemented exclusively with optical inputs and optical outputs coupling from one to three switching elements. Our remarkably simple approach to all-optical switching might lead to the development of a new generation of devices for digital processing and communication technology.