Constant power operation thermo-optic switch
First Claim
1. A method for operating a planar lightwave circuit at a constant power consumption, comprising a. providing at least one active element having two connecting configurations and operative to have a phase change in a light beam passing through each of said connecting configurations, and b. constantly heating both of said connecting configurations, whereby said constant heating provides a substantially uniform and constant temperature distribution across the planar lightwave circuit.
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Abstract
A method for operating a planar lightwave circuit at a constant power consumption, comprises providing a matrix of integrated active elements, heating independently each active element with a separate heating power, and cooperatively operating the heating powers of the active elements to keep a sum of the operating heating powers constant in time independently on the dynamic operation of the element. The active element has two connecting configurations and is operative to have a phase change in a light beam passing through each of the connecting configurations, both connecting configurations being constantly heated. The active element is operable in both analog and digital modes with a constant power consumption.
15 Citations
17 Claims
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1. A method for operating a planar lightwave circuit at a constant power consumption, comprising
a. providing at least one active element having two connecting configurations and operative to have a phase change in a light beam passing through each of said connecting configurations, and b. constantly heating both of said connecting configurations, whereby said constant heating provides a substantially uniform and constant temperature distribution across the planar lightwave circuit.
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9. A method for operating a planar lightwave circuit at a constant power consumption, comprising
a. providing a matrix of integrated active elements, b. providing a heating power to independently heat each said active element, and c. cooperatively operating said heating powers of said active elements to keep a sum of said operating heating powers constant.
Specification