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