Ultra-High-Capacity Optical Communications and Networking: "Integrated photonic crystal/quantum dot chip for wavelength division multiplexed fiber optic transceivers"

该提案是应NSF 01-65“超高容量光通信和网络”的要求提交的。“半导体制造技术已经发展到可以制造革命性新器件的地步，为光纤互连带来新的功能和应用。其中两项新技术，光子晶体和自组织量子点（QD），使纳米结构材料的协同匹配特别有趣。光子晶体缺陷使超小半导体微腔具有三维模式限制，其固有地设置光源的波长。它们还提供了一种机制，用于在元件之间的急弯中在芯片上路由光信号，例如将几个激光源的输出多路复用到单个光输出中。由于这些独特的特征，光子晶体使得能够实现理想地适合于波分复用（WDM）的新型单片集成芯片技术。这种新的芯片技术为超高带宽光纤通信的低成本、高性能、超小型收发器提供了革命性的进步。这样的WDM芯片技术可以很容易地提供超过100 GB/秒的单光纤带宽。在这里，我们建议演示这样的芯片的多波长源。我们建议设计和演示一个纳米光子WDM源，它是一个多波长激光器阵列，其中阵列的每个元件由耦合的光子晶体缺陷腔组成，在单个波长下发射量子点有源区。这项工作依赖于光子晶体的设计和纳米加工，用于光学模式定义和定义阵列元件的输出波长的能力。它还依赖于量子点来减少或消除表面复合以及消除激光啁啾。该WDM源将被电泵浦。我们的计划着重于以下技术的发展：1）电泵浦光子晶体激光器2）具有量子点有源区和取样光栅的高效率光子晶体激光器 光子晶体反射器3）边发射多波长光子晶体/量子点激光器阵列

This proposal was submitted in response to the solicitation NSF 01-65 on "Ultra-High Capacity Optical Communications and Networking." Semiconductor fabrication technology has advanced to a state where revolutionary new devices can now be fabricated that bring new functionality and applications to fiber optic interconnects. Two of these new technologies, photonic crystals and self-organized quantum dots (QDs), enable a synergistic match of nanostructured materials that are particularly interesting. Photonic crystal defects enable ultra-small semiconductor microcavities with 3-dimensional mode confinement that intrinsically sets the wavelength of the light source. They also provide a mechanism for routing light signals on chip in sharp bends between elements, for example to multiplex the outputs of several laser sources into a single optical output. Because of these unique features, photonic crystals enable a new type of monolithicaliy integrated chip technology ideally suited for wavelength division multiplexing (WDM). This new chip technology offers revolutionary advances for low cost, high performance, ultra-small form factor transceivers for ultra-high bandwidth fiber optic communication. Such a WDM chip technology can easily provide single fiber bandwidth in excess of 100 GB/sec.Here we propose to demonstrate the multi-wavelength source for such a chip. We propose to design, and demonstrate a nanophotonic WDM source that is a multi-wavelength laser array in which each element of the array consists of coupled photonic crystal defect cavities emitting at a single wavelength with quantum dot active regions. This work relies on the design and nanofabrication of photonic crystals for the optical mode definition and the ability to define the output wavelength of an array element. It also relies on quantum dots for reducing or eliminating surface recombination and for eliminating the laser chirp. This WDM source is to be electrically pumped. Our program emphasizes the following technological developments1) electrically pumped photonic crystal lasers2) high efficiency photonic crystal lasers with quantum dot active regions and sampled- grating photonic crystal reflectors3) edge-emitting multi-wavelength photonic crystal/quantum dot laser arrays