集成光开关发展现状及关键技术(特邀)
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摘要
随着网络传输数据流量的爆炸性增长,传统电交换由于其有限的带宽和高功耗将很难满足网络带宽发展需求。光交换能直接在光域上完成光信道间信息的交换,具有高速、宽带、透明、低功耗以及潜在的低成本等诸多优点,能满足下一代全光交换网络、数据中心和高性能计算机光互连网络建设的迫切需求。文章介绍了集成光开关的发展现状及核心技术,包括采用氧化硅、III-V族半导体材料和硅材料来制作光开关的进展以及各种技术的特点。其中硅基集成光开关具有结构紧凑、功耗小、成本低以及与互补型金属-氧化物-半导体(CMOS)工艺兼容的优势,适合大规模光开关制作和量产,具有潜在的巨大市场商用价值。文章重点介绍了实现硅基光开关的核心单元器件以及几种代表性光开关阵列,并对光开关状态监控和调节以及光电封装做了阐述。
With the explosive growth of data traffic in communication networks,traditional electrical switches will be difficult to satisfy the requirement of broadband network development due to their limited bandwidth and high-power consumption.With optical switches,data can be directly exchanged in the optical domain without conversion.All-optical switching has many advantages such as high speed,wide bandwidth,transparency,low power consumption and low cost.It can be applied in the next generation all-optical switching networks,data center and high-performance computer interconnect networks.This paper introduces the development status and core technologies of integrated optical switches,including the implementation of optical switches using silicon dioxide,III-V semiconductor materials and silicon materials.Among them,the silicon based integrated optical switches have the advantages of compact size,low power consumption,and compatibility with Complementary Metal-Oxide-Semiconductor(CMOS)technologies,which are suitable for massive low-cost production that can potentially find rich market applications.This paper focuses on the implementation of the elementary devices for silicon based optical switches and several representative optical switch fabrics.The methods for the switch state monitoring and switch chip package are also covered.
With the explosive growth of data traffic in communication networks,traditional electrical switches will be difficult to satisfy the requirement of broadband network development due to their limited bandwidth and high-power consumption.With optical switches,data can be directly exchanged in the optical domain without conversion.All-optical switching has many advantages such as high speed,wide bandwidth,transparency,low power consumption and low cost.It can be applied in the next generation all-optical switching networks,data center and high-performance computer interconnect networks.This paper introduces the development status and core technologies of integrated optical switches,including the implementation of optical switches using silicon dioxide,III-V semiconductor materials and silicon materials.Among them,the silicon based integrated optical switches have the advantages of compact size,low power consumption,and compatibility with Complementary Metal-Oxide-Semiconductor(CMOS)technologies,which are suitable for massive low-cost production that can potentially find rich market applications.This paper focuses on the implementation of the elementary devices for silicon based optical switches and several representative optical switch fabrics.The methods for the switch state monitoring and switch chip package are also covered.
引文
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