{HEAD ~ The resonator structure} can be used in {TAIL ~ various applications}, such as optical filters, lasers, modulators, spectrum analyzers, wavelockers, interleave filters, and optical add drop multiplexers 
{ HEAD ~ The resonator structure } can be used in { TAIL ~ various applications } , such as optical filters , lasers , modulators , spectrum analyzers , wavelockers , interleave filters , and optical add drop multiplexers
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