Level: 3
| English | FIBER OPTICS |
| Spanish | FIBRA ÓPTICA |
| German | FASEROPTIK |
| French | FIBRE OPTIQUE |
| Netherlands | OPTISCHE VEZEL |
| Italian | FIBRE OTTICHE |
| Russian | СТЕКЛОВОЛОКНО |
| Portuguese | FIBRA ÓPTICA |
| Swedish | FIBEROPTIK |
| Danish | FIBEROPTIK |
| Norwegian | FIBEROPTIKK |
| Finnish | KUITUOPTIIKKA |
| Turkish | FIBEROPTIK |
| Polish | ŚWIATŁOWÓD |
| Greek | ΟΠΤΙΚΕΣ ΙΝΕΣ |
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| Czech | OPTICKÉ VLÁKNO |
| Lithuanian | OPTINIS STIKLAS |
| Latvian | OPTISKĀ ŠĶIEDRA |
| Estonian | VALGUSJUHE |
| Korean | |
| Hungarian | SZÁLOPTIKA |
| Romanian | FIBRĂ OPTICĂ |
| Spanish(LA) | FIBRA ÓPTICA |
| Portuguese(Br) | FIBRA ÓPTICA |
| Belarusian (be) | АПТЫЧНАЕ ВАЛАКНО |
| Bulgarian (bg) | ОПТИЧНО ВЛАКНО |
| Ukrainian (uk) | СКЛОВОЛОКНО |
| Serbian (sr) | ОПТИЧКО ВЛАКНО |
| Croatian (hr) | OPTIČKO VLAKNO |
| Slovak (sk) | OPTICKÉ VLÁKNO |
| Slovenian (sl) | OPTIČNO VLAKNO |
| Arabic (ar) | ليف بصري |
| Hebrew (he) | סיב אופטי |
| Thai (th) | ใยแก้วนำแสง |
| Indonesian (id) | SERAT OPTIK |
| Malay (ms) | GENTIAN OPTIK |
| Philipines (tl) | FIBER OPTICS |
| French(Ca) | FIBRE OPTIQUE |
| ENGLISH(UK) | FIBER OPTICS |