Method and System for Realizing Multi-Directional Reconfigurable Optical Add-Drop Multiplexing
First Claim
1. A method for implementing multi-directional reconfigurable optical add-drop multiplexer (ROADM), comprising:
- Amplifying optical signals transmitted from N directions respectively, and then performing demultiplexing respectively, dividing optical signals in each direction into M groups of optical signals with different wavelengths, and then transmitting N groups of demultiplexed optical signals with same wavelength in various directions to the same optical crossbar switch, and each optical crossbar switch receiving N groups of optical signals with same wavelength; and
each optical crossbar switch outputting input optical signals from corresponding output interfaces according to configuration information;
wherein M and N are both positive integers.
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Abstract
A method and system for realizing multi-directional reconfigurable optical add-drop multiplexer are provided, and the system includes: N optical preamplifiers, N demultiplexing units and M optical crossbar switches; the method includes: amplifying optical signals sent from N directions respectively, and dividing the optical signals in each direction into M groups of optical signals with different wavelengths; then transmitting N groups of demultiplexed optical signals with same wavelength in each direction to the same optical crossbar switch, and each optical crossbar switch receiving N groups of optical signals with same wavelength; each optical crossbar switch outputting the inputted optical signals from the corresponding output interfaces according to configuration information, wherein M and N are positive integers.
15 Citations
15 Claims
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1. A method for implementing multi-directional reconfigurable optical add-drop multiplexer (ROADM), comprising:
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Amplifying optical signals transmitted from N directions respectively, and then performing demultiplexing respectively, dividing optical signals in each direction into M groups of optical signals with different wavelengths, and then transmitting N groups of demultiplexed optical signals with same wavelength in various directions to the same optical crossbar switch, and each optical crossbar switch receiving N groups of optical signals with same wavelength; and each optical crossbar switch outputting input optical signals from corresponding output interfaces according to configuration information; wherein M and N are both positive integers. - View Dependent Claims (2, 3, 4, 5, 11, 12, 13, 14)
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6. A system for implementing multi-directional ROADM, comprising:
- N Optical Preamplifiers (OPAs), N demultiplexing units and M optical crossbar switches;
said N OPAs being respectively configured to;
amplify and send received optical signals from each corresponding direction to a corresponding demultiplexing unit;the demultiplexing units being configured to;
divide received and amplified optical signals into M groups of optical signals with different wavelengths, up to x optical signals in each group;each demultiplexing unit comprising at least Mxx output interfaces, and every x output interfaces connecting with x input interfaces of one optical crossbar switch, and optical signals output by output interfaces in each demultiplexing unit connected with the input interfaces of each optical crossbar switch having same wavelengths; each optical crossbar switch being configured to;
exchange input optical signals to a corresponding output interface in accordance with configuration information;wherein M, N and x are all positive integers. - View Dependent Claims (7, 8, 9, 10, 15)
- N Optical Preamplifiers (OPAs), N demultiplexing units and M optical crossbar switches;
Specification