Arrayed waveguide grating based modular interconnection networks and methods for constructing and applying the same

• US 9,490,928 B2
• Filed: 12/01/2014
• Issued: 11/08/2016
• Est. Priority Date: 08/20/2014
• Status: Active Grant

• Current Assignee: Shanghai JIAO TONG University
• Original Assignee: Shanghai JIAO TONG University
• Inventors: Ye, Tong, Lee, Tony T., Hu, Weisheng
• Primary Examiner(s): Payne, David
• Assistant Examiner(s): KRETZER, CASEY L
• Application Number:
  US14/557,429
• Publication Number:
  US 20160056911A1
• Time in Patent Office: 708 Days
• US Class Current: 1/1
• CPC Class Codes: H04J 14/0267 Optical signaling or routing
• CPC Class Codes: H04J 14/0279 WDM point-to-point architectures
• CPC Class Codes: H04Q 2011/0016 using wavelength multiplexing or demultiplexing
• CPC Class Codes: H04Q 2011/0032 using static wavelength routers (e.g. arrayed waveguide grating router [AWGR] )

Abstract

An arrayed waveguide grating (AWG) based interconnection network and modular construction method, comprising N₁ left nodes, with each left node having N₂ ports, N₂ right nodes, with each right node having N₁ ports, where N₁≧N₂, N₁ and N₂ having a greatest common divisor r, and each port having an optical transceiver associated with a fixed wavelength; N₁n₂ r×1 wavelength multiplexers having their input ports respectively connected with the ports of N₁ left nodes, where n₂=N₂/r; N₂n₁ 1×r wavelength demultiplexers having their output ports respectively connected with the ports of N₂ right nodes, where n₁=N₁/r; n₁n₂ r×r AWGs connecting the r×1 wavelength multiplexers and the 1×r wavelength demultiplexers r×rn₁n₂, and each of the r×r AWGs being associated with a wavelength subset {λ_k|k=0, 1, . . . , r−1}.

Claims

1. A method for constructing an interconnection network, comprising:

providing N₁ N₂×

1 wavelength multiplexers, labeled by L₀, L₁, . . . , L<sub>N_−

1</sub>, for N₁ left nodes, an ith N₂×

1 wavelength multiplexer having its jth input port connected with a jth port of an ith left node, and a jth port of the ith left node is associated with a wavelength

2. An AWG-based modular interconnection network according to claim 1, comprising:

left nodes, a number of the left nodes being N₁, and each of the left nodes having N₂ ports,

right nodes, a number of the right nodes being N₂, and each of the right nodes having N₁ ports,

an optical transceiver associated with a fixed wavelength on each port of the left and right nodes,

r×

1 wavelength multiplexers, a number of the r×

1 wavelength multiplexers being N₁n₂, each of the n₂ r×

1 wavelength multiplexers having N₂ input ports being connected with the N₂ ports of one of the left nodes, and n₂=N₂/r,

1×

r wavelength demultiplexers, a number of the 1×

r wavelength demultiplexers being N₂n₁, each of the n₁ 1×

r wavelength demultiplexers having N₁ output ports being connected with the N₁ ports of one of the right nodes, and n₁=N₁/r, and

r×

r AWGs connecting the r×

1 wavelength multiplexers and the 1×

r wavelength demultiplexer, a number of the r×

r AWGs being n₁n₂, each of the r×

r AWGs being associated with a wavelength subset {λ

_k|k=0, 1, . . . , r−

1},

where N₁≧

N₂, N₁ and N₂ are integers that have a greatest common divisor r, and r>

1.

3. The method as claimed in claim 1, further comprising:

replacing the AWG in the central stage with a module constituted of a network AWG of three stages.

4. A method for constructing an interconnection network, comprising:

providing N₁ N₂×

1 wavelength multiplexers, labeled by L₀, L₁, . . . , L<sub>N1−

1</sub>, for N₁ left nodes, an ith N₂×

1 wavelength multiplexer having its ith input port connected with a jth port of an ith left node, and a jth port of the ith left node is associated with a wavelength

5. An AWG-based modular interconnection network according to claim 4, comprising:

left nodes, a number of the left nodes being N₁, and each of the left nodes having N₂ ports,

right nodes, a number of the right nodes being N₂, and each of the right nodes having N₁ ports,

an optical transceiver associated with a fixed wavelength on each port of the left or right node,

N₂×

1 wavelength multiplexers, a number of the N₂×

1 wavelength multiplexers being N₁, and each of the N₂×

1 wavelength multiplexers having N₂ input ports being connected with the N₂ ports of one of the left nodes;

1×

N₂ wavelength demultiplexers, a number of the 1×

N_z wavelength demultiplexers being N₁=KN₂, and each of the K 1×

N₂ wavelength demultiplexers having N₁ output ports being connected with the N₁ ports of one of the right nodes; and

N₂×

N₂ AWGs connecting the N₂×

1 wavelength multiplexers and the 1×

N₂ wavelength demultiplexers, a number of the N₂×

N₂ AWGs being K, and each of the N₂×

N₂ AWGs being associated with a wavelength subset {λ

_i|i=0, 1, . . . , N₂−

1},

wherein N₁=KN₂.

6. The method as claimed in claim 4, further comprising:

replacing the AWG in the central stage with a module constituted of a three-stage network of AWGs.