| Subject | English | German |
| radiat. | optical coupling | optische Kopplung (operation) |
| radiat. | optical coupling | optisches Kontaktmittel (medium) |
| industr., construct., chem. | optical coupling | Wellenleiterkopplung |
| industr., construct., chem. | optical coupling | optische Koppelung |
| opt. | optical coupling | gestörte Totalreflexion (light leakage from one fibre into another by evanescent boundary wave interaction) |
| industr., construct., chem. | optical coupling | optische Ankopplung |
| tech. | optical coupling | Lichtkopplung |
| radiat. | optical coupling | optisches Kopplungsmittel (medium) |
| comp. | optical coupling | optische Kopplung |
| automat. | optical-electronic coupling element | optoelektronisches Kopplungselement |