公开(公告)号：US09167322B1

公开(公告)日：2015-10-20

申请号：US14301555

申请日：2014-06-11

Applicant: Google Inc.

Inventor： Xiaoxue Zhao ,  Bikash Koley ,  Vijay Vusirikala ,  Edward Crabbe ,  Paul Phillip Germano ,  Hong Liu ,  Philip Michael Wells

IPC: H04Q11/00 ,  H04B10/2575

CPC classification number: H04Q11/0005 ,  H04B10/2575 ,  H04Q2011/0013 ,  H04Q2011/0032 ,  H04Q2011/0039 ,  H04Q2011/006

Abstract: A packet switch/router including a first stage switch fabric receiving an electrical signal, a mid-stage buffer receiving and storing the electrical signal from the first stage switch fabric, and a second stage switch fabric receiving the electrical signal from the mid-stage buffer. Each switch fabric includes N layers of N×N arrayed waveguide gratings (AWGs), and each AWG has ingress ports and egress ports. A wavelength tunable device, such as a tunable laser, communicates with a source ingress port of an AWG and converts the received electrical signal to an optical signal having a wavelength selected for routing a packet from the source ingress port to a target egress port of the arrayed waveguide grating. A photoreceiver, such as a burst-mode photoreceiver, receives the propagated optical signal from the target egress port and converts the optical signal to the electrical signal.

Abstract translation: 包括接收电信号的第一级交换结构的分组交换机/路由器，接收并存储来自第一级交换结构的电信号的中间缓冲器以及从中间级缓冲器接收电信号的第二级交换机结构 。 每个交换结构包括N层N×N阵列波导光栅（AWG），每个AWG具有入口端口和出口端口。 诸如可调激光器的波长可调设备与AWG的源入口端口进行通信，并将接收到的电信号转换为具有选择的波长的光信号，以将数据包从源入口端口路由到目标出口端口 阵列波导光栅。 诸如突发模式光接收器的光接收器从目标出口接收传播的光信号，并将光信号转换为电信号。