US 2019/0158941 A1Published application

Method and apparatus for controlling optical switch matrix

AssigneeHuawei Technologies Co., Ltd.

InventorsChunhui ZHANG, Peng ZHANG, Shengyong YAN

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Abstract

This application discloses a method and an apparatus for controlling an optical switch matrix. The method includes: setting row drives corresponding to P input ports to a reset row drive value, and setting column drives corresponding to Q output ports to a reset column drive value, so that optical switches at intersections are in a first state; successively setting, based on time, a row drive corresponding to an ith input port to values in a switching row drive sequence, and successively setting, based on time, a column drive corresponding to a jth output port to values in a switching column drive sequence, so that a target optical switch in the P×Q optical switches remains in the first state, and the other optical switches are switched from the first state to a second state in first time periods.

Claims20

Dependent claims

A method for controlling an optical switch matrix, wherein the optical switch matrix is an M×N optical switch matrix of a crossbar structure, the optical switch matrix comprises M input ports and N output ports, the optical switch matrix comprieses M×N optical switches, each optical switch in the M×N optical switches of the optical switch matrix comprises a first drive and a second drive, first drives of N optical switches in each row of the optical switch matrix are connected together to form a row drive, and second drives of M optical switches in each column of the optical switch matrix are connected together to form a column drive, wherein M and N are both positive integers, and at least one of M or N is greater than or equal to 2;

and the method comprises:
setting P row drives corresponding to P input ports in the M input ports to a reset row drive value;
setting Q column drives corresponding to Q output ports in the N output ports to a reset column drive value, wherein P×Q optical switches at intersections of the P input ports and the Q output ports are in a first state, P is less than or equal to M, and Q is less than or equal to N;
and
simultaneously performing the following operations on the P row drives corresponding to the P input ports and the Q column drives corresponding to the Q output ports:
successively setting, based on time, a row drive corresponding to an ith input port in the P input ports to values in a switching row drive sequence;
and
successively setting, based on time, a column drive corresponding to a jth output port in the Q output ports to values in a switching column drive sequence, wherein the switching row drive sequence and the switching column drive sequence make a target optical switch in the P×Q optical switches remain in the first state, and the switching row drive sequence and the switching column drive sequence make other optical switches in the P×Q optical switches different from the target optical switch switched from the first state to a second state in first time periods respectively corresponding to the other optical switches, the target optical switch is at least one optical switch at an intersection of at least one input port in the P input ports and a target output port corresponding to the at least one input port, a value of i is 1, 2, . . . , or P, and a value of j is 1, 2, . . . , or Q.

5 more elements

An apparatus for controlling an optical switch matrix, wherein the optical switch matrix is an M×N optical switch matrix of a crossbar structure, the optical switch matrix comprises M input ports and N output ports, the optical switch matrix comprieses M×N optical switches, each optical switch in switches of the optical switch matrix comprises a first drive and a second drive, first drives of N optical switches in each row of the optical switch matrix are connected together to form a row drive, and second drives of M optical switches in each column of the optical switch matrix are connected together to form a column drive, wherein M and N are both positive integers, and at least one of M or N is greater than or equal to 2;

and the apparatus comprises a processor configured to:
set P row drives corresponding to P input ports in the M input ports to a reset row drive value;
set Q column drives corresponding to Q output ports in the N output ports to a reset column drive value, wherein P×Q optical switches at intersections of the P input ports and the Q output ports are in a first state, P is less than or equal to M, and Q is less than or equal to N;
and
simultaneously perform the following operations on the P row drives corresponding to the P input ports and the Q column drives corresponding to the Q output ports:
successively setting, based on time, a row drive corresponding to an ith input port in the P input ports to values in a switching row drive sequence;
and
successively setting, based on time, a column drive corresponding to a jth output port in the Q output ports to values in a switching column drive sequence, wherein the switching row drive sequence and the switching column drive sequence make a target optical switch in the P×Q optical switches remain in the first state, and the switching row drive sequence and the switching column drive sequence make other optical switches in the P×Q optical switches different from the target optical switch switched from the first state to a second state in first time periods respectively corresponding to the other optical switches, the target optical switch is at least one optical switch at an intersection of at least one input port in the P input ports and a target output port corresponding to the at least one input port, a value of i is 1, 2, . . . , or P, and a value of j is 1, 2, . . . , or Q.

5 more elements

Dependencies are inferred from the claim text.