Modulators for optical communication

光通信调制器

• 批准号: 490448-2015
• 负责人: Sheikholeslami, Ali
• 金额: $ 1.82万
• 依托单位: University of Toronto
• 依托单位国家: 加拿大
• 项目类别: Engage Grants Program
• 财政年份: 2015
• 资助国家: 加拿大
• 起止时间: 2015-01-01 至 2016-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=586488
• 关键词: Modulators; optical; communication

Demand for higher network bandwidth has been increasing due to applications such as video streaming and cloud computing. This increased demand can be met only by increasing the data rate and the capacity of the data center's interconnects. The conventional copper links suffer from attenuation, dispersion, and crosstalk, which limit their communication speed. To resolve this, copper links are being replaced by optical fibers where manipulated light (representing 0 or 1) is sent from transmitter to the receiver. To increase the optical communication capacity, i.e. number of bits that can be reliably transmitted per second, we plan to use multi-level intensity/phase of light to represent more than one bit per symbol. The purpose of this project is to design modulators that are capable of converting two or more data bits into one symbol, being represented by a multi-level intensity/phase. Design of optical modulators, such as the ones described in this work, enables companies like Ciena to reduce the cost of their communication equipment, as it will allow them to send a higher number of bits over the same optical fiber. Such a design will give Ciena competitive edge in their world-wide presence in the area of packet-optical transport, packet-optical switching, packet networking, optical transport. Given that about half of Ciena's global R and D team reside in Ottawa, this project will be directly beneficial to Ontario and Canada. The outcome of this project will be fully integrated optical modulators along with their behavioral models (in both time domain and frequency domain) and measured results.

由于视频流和云计算等应用，对更高网络带宽的需求一直在增加。只有通过提高数据中心互连的数据速率和容量，才能满足这种不断增长的需求。传统的铜链路存在衰减、色散和串扰，这限制了它们的通信速度。 为了解决这个问题，铜链路正在被光纤取代，其中操纵光（代表0或1）从发射器发送到接收器。为了增加光通信容量，即每秒可以可靠传输的比特数，我们计划使用多级强度/相位的光来表示每个符号超过一个比特。 该项目的目的是设计能够将两个或更多个数据位转换为一个符号的调制器，由多级强度/相位表示。光调制器的设计，如在这项工作中所描述的，使Ciena这样的公司能够降低其通信设备的成本，因为它将允许他们发送 在相同的光纤上具有更高的比特数。这样的设计将使Ciena在分组光传输、分组光交换、分组网络、光传输领域的全球存在中具有竞争优势。鉴于Ciena的全球研发团队约有一半位于渥太华，该项目将直接有利于 安大略和加拿大。 该项目的成果将是完全集成的光调制器沿着及其行为模型（时域和频域）和测量结果。