| http://www.w3.org/ns/prov#value | - The tunable filter may be configured with an extended tuning range by employing a 1???N optical switch or splitter and N tunable pixel-filters, where N is an integer greater than one and where each pixel is a tunable filter having an offset center frequency enabling the tuning range of one pixel to partially overlap another pixel rendering the device and 1???N switch capable of scanning pixels to
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