Two-Section Gain- and Loss-Coupled DFB Lasers and Their Applications

0327276 Li所提出的研究旨在推进自脉冲多段增益和损耗耦合分布反馈（DFB）激光器的设计和制造，并展示这些激光器的新应用。 具体而言，所提出的研究的目标是：1）开发使能技术的毫米波（MMW）信号（高达）使用多段增益和损耗耦合DFB激光器中的自脉冲的光产生。 2）实现高比特率全光时钟恢复; 3）实现未来高比特率长距离光传输中光信号幅度和相位的全光再生/格式转换; 4）设计、构建和优化毫米波光纤上下行链路，，可用于简化未来宽带无线网络的基站结构。该建议的智力价值体现在拟议活动将提高知识光通信在几个方面的基础和技术基础。它将为未来的50 Tb/s光纤传输系统带来160 Gb/s的时钟恢复技术。 使用光注入锁定结合自脉动来实现用于天线遥控的MMW光纤上行链路可以潜在地规避阻止插入用于传输MMW信号的光学技术的限制。 首次提出了载波抑制归零（CSRZ）信号幅度和相位同时再生的概念。 随着光传输技术探索新的调制格式，操纵幅度和相位，这样的光再生技术不仅是智力刺激和挑战，但也有实际应用。 从根本上说，这是重要的第一步，因为这自然会导致光学技术是否可以用于再生其他调制格式的幅度和相位的问题。拟议的活动对光通信界和社会产生了更广泛的影响。 如果成功实施，拟议的研究将为未来60 GHz宽带无线网络的光纤骨干网建设提供技术选择。 该技术将进一步推动下一代40 Gb/s及以上光传输和网络的发展。

0327276LiThe proposed research is aimed at advancing the design and fabrication of self-pulsing multi-section gain- and loss-coupled distributed feedback (DFB) lasers and demonstrating new applications of these lasers. Specifically, the objectives of the proposed research are:1)To develop the enabling technology for the optical generation of millimeter-wave (MMW) signals (up to ) using self pulsing in multi-section gain- and loss-coupled DFB lasers. 2)To demonstrate high-bit-rate (up to ) all-optical clock recovery.3)To realize all-optical regeneration/format conversion of both amplitude and phase of optical signals for future high-bit-rate long-distance optical transport.4)To design, build and optimize MMW fiber-optic links for both uplinks and down links, which can be used to simplify the architecture of base stations for future broadband wireless networks.The intellectual merit of the proposal manifests in that the proposed activity will advance the knowledge base and the technology base for optical communications in several fronts. It will lead to a 160 Gb/s clock recovery technology for future 50Tb/s per fiber transmission systems. Using optical injection locking in combination with self pulsation to realize MMW fiber-optic uplinks for antenna remoting can potentially circumvent limitations that prevented insertion of optical technology for transmission of MMW signals. For the first time, we introduce the concept of simultaneous amplitude and phase regeneration of carrier-suppressed return-to-zero (CSRZ) signals. As optical transport technologies explore new modulation formats that manipulate both amplitude and phase, such optical regeneration techniques not only are intellectually stimulating and challenging but also have practical applications. Fundamentally, this is an important first step as this naturally leads to the question of whether optical technologies can be used to regenerate both amplitude and phase for other modulation formats. The proposed activity has broader impacts on the optical communications community and the society. When successfully carried out, the proposed research will result in a technology option for building fiber-optic backbones for future 60 GHz broadband wireless networks. This technology will further enable advance in next generation optical transport and networking at 40 Gb/s and above.