Mirror drift compensation in an optical circuit switch
First Claim
1. A method for making a connection in an optical circuit switch, comprising:
- receiving a first make command to make a first optical connection between a first port and a second port, the first port uniquely associated with a rotatable mirror element;
determining a first baseline voltage to be applied to an electrode coupled to the minor element to cause the minor element to rotate about an axis to make the first optical connection;
applying the first baseline voltage to the electrode;
periodically adjusting the voltage applied to the electrode to minimize an insertion loss of the first optical connection;
periodically storing accumulated drift data in a memory, the accumulated drift data derived from a difference between the adjusted voltage applied to the first electrode and the first baseline voltage;
receiving a break command to break the first optical connection;
applying an at-rest voltage to the first electrode; and
decaying the accumulated drift data in accordance with a predetermined decay function.
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Accused Products
Abstract
Methods of operating an optical circuit switch and optical circuit switches are disclosed. An optical circuit switch may receive a first make command to make a first optical connection between a first port and a second port, the first port uniquely associated with a rotatable mirror element, determine a first baseline voltage to be applied to an electrode coupled to the mirror element to cause the mirror element to rotate about an axis to make the first optical connection, and apply the first baseline voltage to the electrode. The optical circuit switch may periodically adjust the voltage applied to the electrode to minimize an insertion loss of the first optical connection, and periodically store accumulated angular drift data in a memory, the accumulated angular drift data derived from a difference between the adjusted voltage applied to the first electrode and the first baseline voltage.
24 Citations
18 Claims
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1. A method for making a connection in an optical circuit switch, comprising:
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receiving a first make command to make a first optical connection between a first port and a second port, the first port uniquely associated with a rotatable mirror element; determining a first baseline voltage to be applied to an electrode coupled to the minor element to cause the minor element to rotate about an axis to make the first optical connection; applying the first baseline voltage to the electrode; periodically adjusting the voltage applied to the electrode to minimize an insertion loss of the first optical connection; periodically storing accumulated drift data in a memory, the accumulated drift data derived from a difference between the adjusted voltage applied to the first electrode and the first baseline voltage; receiving a break command to break the first optical connection; applying an at-rest voltage to the first electrode; and decaying the accumulated drift data in accordance with a predetermined decay function. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An optical circuit switch, comprising:
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a first port uniquely associated with a rotatable mirror element; a second port; a controller configured to; receive a first make command to make a first optical connection between a first port and a second port, the first port uniquely associated with a rotatable mirror element; determine a first baseline voltage to be applied to an electrode coupled to the mirror element to cause the mirror element to rotate about an axis to make the first optical connection; apply the first baseline voltage to the electrode; periodically adjust the voltage applied to the electrode to minimize an insertion loss of the first optical connection; periodically store accumulated drift data in a memory, the accumulated drift data derived from a difference between the adjusted voltage applied to the first electrode and the first baseline voltage; receive a break command to break the first optical connection; apply an at-rest voltage to the first electrode; and decay the accumulated drift data in accordance with a predetermined decay function. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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Specification