W3LCD
WANS synthesizer
WCorona poling
WDigital Light Processing
WDigital micromirror device
WDirect and indirect band gaps
WOptical disc drive
WElectro-optic modulator
WFiber-optic cable
WGallium arsenide
WHigh-field domain
WIndium phosphide
WLED art
WOptical disc
WHistory of optical storage media
WOpto-isolator
WPhoto–Dember effect
WPhotoinduced electron transfer
WPhotonic curing
WPhotonics mast
WPilkington
WResistive opto-isolator
WGagik Shmavonyan
WSilicon photomultiplier
WSlotted optical switch
WSmall molecule sensors
WThermopile laser sensor
WCarl Zeiss AG