In one aspect, the present invention provides an optical node device that uses a spatial light modulating element that is able to reduce flicker and achieves {HEAD ~ a light node device} that is small and consumes {TAIL ~ little power}, because it does not use thermal electric cooling elements 
In one aspect , the present invention provides an optical node device that uses a spatial light modulating element that is able to reduce flicker and achieves { HEAD ~ a light node device } that is small and consumes { TAIL ~ little power } , because it does not use thermal electric cooling elements
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