| UHNA | Ultra-High Numerical Aperture |
| PIC | Photonic integrated circuits |
| QKD | Quantum key distribution |
| SOI | Silicon-on-insulator |
| MPW | Multi-Project Wafer |
| DUV | Deep ultraviolet |
| FDE | Finite-difference eigenmode |
| FDTD | Finite-difference time-domain |
| FAU | Fiber array unit |
| DRIE | Deep reactive ion plasma etching |
| RIE | Reactive ion plasma etching |
| ICP | Inductively Coupled Plasma |
| OFDR | Optical frequency domain reflectometry |
| SMF | Single-Mode Fiber |
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