| A | | | | | |
| A-DCM | Adaptive Dispersion-Compensating Module | adaptives dispersionskompensierendes Modul | | | |
| A/D | Analog/Digital | | | | |
| ADM | | Add-Drop-Multiplexer | | | |
| ADS | Additional digital Service | zusätzlicher digitaler Service | | | |
| ADSL | Asymetric Digital Subscriber Line | asymmetrischer digitaler Teilnehmer-Anschluss, asymmetrisches DSL | | | |
| ADSL2+ | Higher Speed Version of ADSL | ADSL mit höherer Geschwindigkeit | | | |
| AEL | Accessible Emission Limit | Grenzwert der zugänglichen Strahlung | | | |
| AES | Advanced Encryption Standard | | | | |
| AM | | Amplitudenmodulation | | | |
| AN | Access Node | Zugangsknoten | | | |
| AON | Active optical Network | aktives optisches netz | | | |
| AP | Attenuation Profil | Dämpfungsprofil | | | |
| APC | Angled Physical Contact | schräger physischer Kontakt | | | |
| APD | Avalanche Photodiode | Lainen-Photodiode | | | |
| APON | ATM-based passive optical netzwork | ATM-basiertes passives optisches Netz | | | |
| ASE | Amplified Spontaneous Emission | Verstärkte spontane Emission, spontane Emssion eines OFA | | | |
| ASK | Amplitude Shift Keying | | | | |
| ASON | Automatically Switched Optical Network | automatisch geschaltetes optisches Netz | | | |
| ASTN | Automatically Switched Transport Network | automatisch geschaltetes optisches Netz | | | |
| AT | Acceptance Test | | | | |
| ATM | Asynchronous Transfer Mode | asynchroner Transfermodus | | | |
| AWG | Arrayed Waveguide Grating | Wellenleiterfächer | | | |
| BAPT | | Bundesamt für Post und Telekommunikation | | | |
| bBKVrST | | benutzerseitige BK-Verstärkerstelle | | | |
| BDP | Building Demarcation Point | Übergabepunkt am Hauseingang | | | |
| BEP | Building Entry Point | Gebäudeinführungspunkt | | | |
| BER | Bit Error Rate | Bitfehlerrate, Bitfehlerwahrscheinlichkeit | | | |
| BFSK | Binary Frequency Shift Keying | | | | |
| BiDi | Bidirectional | bidirektional, zweidirektional | | | |
| BIF | Bend Improved Fiber | Biegeoptimierte Fasern | | | |
| BIP | Bit Interleaved Parity | Bandbreite-Längen-Produkt, LED-Bandbreite | | | |
| BK | | Breitbandkommunikation | | | |
| B-ISDN | | breitbandiges diensteintegrierendes digitales Netz | | | |
| BLP | | Bandbreite-Längen-Produkt,LED Bandbreite | | | |
| B-OTDR | Brillouin-OTDR | | | | |
| BPON | Broadband Passive optical Network | breitbandiges optisches Netzwerk | | | |
| Bi-PON | | | | | |
| BZT | | Bundesamt für Zulassungen in der Telekommunikation | | | |
| C & C | Crimp and Cleeve | | | | |
| C-Band | Conventional Band | konventionelles Übertragungsband (1530-1565 nm) | | | |
| CAP | Carrierless Amplitude/Phase Modulation | | | | |
| CAP/QAM | | Trägerlose Phasenmodulation/Quadratur-Amplitudenmodulation | | | |
| CATV | Cable Television | Kabelfernsehen | | | |
| CBA | Channel Bank Assembly | | | | |
| CCI | Connection Controller Interface | | | | |
| CCIT | Commission Consulatative International de Telegraphique et Telephonique | | | | |
| CD | Chromatic Dispersion | Chromatische Dispersion | | | |
| CDM | Code Division Multiplex | Code Multiplex | | | |
| CDMA | Code Division Multiplex Access | | | | |
| CELP | Code Excited Linear Prediction | | | | |
| CFK | | Carbonfaserverstärkter Kunststof | | | |
| CFT | | Kosinus-Fouriertransformation | | | |
| CLEC | Competitive Local Exchange Carrier | mittelgroße Telefongesellschaft | | | |
| CML | Chirp-Managed Laser | | | | |
| C/N | Carrier-to-Noise | Träger-zu-Rausch | | | |
| CNR | Carrier-to-Noise Ratio | Träger-zu-Rausch-Verhältnis | | | |
| CO | Central Office | Vermittlungsstelle | | | |
| C-OFDR | | kohärente Frequenzbereichs-Reflektometrie | | | |
| CoS | Class of Service | | | | |
| CPE | Customer Premises Equipment | Teilnehmernetzgerät | | | |
| CPR | | gekoppeltes Leistungsverhältnis | | | |
| CR | Coupling Ratio | Koppelverhältnis | | | |
| CS-ACELP | Conjugate | | | | |
| CSMA/CD | Carrier Sense Multiple Access / Collision Detection | | | | |
| CSO | Composite Second-Order BeatNoise | | | | |
| CSRZ | Carrier-Suppressed return-to-Zero | Modulationsverfahren | | | |
| CTI | Computer Integrated Telephony | | | | |
| CVD | Chemical Vapour Deposition | Abscheidung aus der Dampfphase | | | |
| CW | Continiuos Wave | ungedämpfte, zeitlich konstant abgesetzte Welle | | | |
| CWDM | Coarse Wavelength Division Multiplexing | Grobes Wellenlängenmultiplex | | | |
| CXMA | | Composite Cross Modulation Abstand | | | |
| D2B | Domestic Digital Bus | | | | |
| DA | Twisted (metallic) pair | Doppelader | | | |
| DA | Dispersion accomodation | Dispersionsanpassung | | | |
| dB | decibel | Dezibel | | | |
| DB | | duobinär | | | |
| DBFA | Double Band Fiber Amplifier | Doppelband-Faserverstärker (C- und L-Band) | | | |
| dBm | Decibel with respect to 1 mW | | | | |
| DBR-Laser | Distributed Bragg Reflector Laser | Laser mit verteiltem Bragg-Reflektor | | | |
| DCC | Data Distribution Channel | | | | |
| DCD | Dispersion Compensation Device | Dispersionskompensierendes Bauelement | | | |
| DCF | Dispersion Compensation Filter | Dispersionskompensierender Filter | | | |
| DCF | Dispersion Compensating Fibre | Dispersionskompensierende Faser | | | |
| DCM | Dispersion Compensation Module | Dispersionskompensierendes Modul | | | |
| DCS | Digital Cross-Connect System | | | | |
| Digital Cross-Connect Switch | | | | |
| DCX | Digital Cross-Connect System | | | | |
| DECT | Digital Enhanced Cordless Telecommunication | | | | |
| DFB Laser | Distributed FeedBack Laser | Laser mit verteilter Rückkopplung | | | |
| DGD | Differential Group Delay | differentielle Gruppenlaufzeit | | | |
| DHCP | Dynamic Host Configuration Protocol | | | | |
| DLC | Digital Loop Carrier | | | | |
| DLL | Digital Local Line | | | | |
| DML | Directly Modulated Laser | direkt modulierter Laser | | | |
| DMS | Dispersion Managed Soliton | dispersionsgemanagtes Soliton | | | |
| DMT | Discrete Multitone | | | | |
| DMUX | Demultiplexer | | | | |
| DNS | | Domain Name Service | | | |
| DOCSIS | Data-over-Cable Service Interface Specification | | | | |
| DSF | Dispersion Shifted Fiber | dispersionsverschobener Lichtwellenleiter | | | |
| DSP | Digital Signal Processing | | | | |
| DST | Dispersion Supported Transmission | dispersionsgestützte Übertragung | | | |
| DTF | Dielectric Thin Film Filter | Dünnschichtfilter | | | |
| DVB | Digital Video Broadcast | | | | |
| DVB-C | DVB Cable | DVB über Kabel | | | |
| DVB-S | DVB Satelite | DVB über Satellite | | | |
| DVB-T | DVB Terrestrial | DVB über terrestrische Sender | | | |
| DVI | Digital Visual Interface | | | | |
| DWDM | Dense Wavelength Division Multiplexing | Dichtes Wellenlängenmultiplex | | | |
| E/O | Electrical to optical conversion | elektro-optischer Wandler | | | |
| EA | Electro Absorption | Elektroabsorption | | | |
| EBFA | Extended Band Fiber Amplifier | Faserverstärker für das L-Band | | | |
| EDE | Electronic Distortion Equalization | | | | |
| EDFA | Erbium Doped Fiber Amplifier | erbiumdotierter Faserverstärker | | | |
| EDWA | Erbium Doped Waveguide Amplifier | | | | |
| EL | Excess Loss | Zusatzdämpfung | | | |
| ELFEXT | Equall Level Far End Crosstalk | | | | |
| EML | Externally modulated Laser | extern modulierter Laser | | | |
| EMV | Elektromagnetische Verträglichkeit | | | | |
| EPON/GEPON | Ethernet Passive Optical Network | | | | |
| Escon | Enterprise System Connection | | | | |
| FBG | Fiber Bragg Grating | Faser-Bragg-Gitter | | | |
| FBT | Fused Bisonic Taper | | | | |
| FDDI | Fiber Distributed Data Interface | | | | |
| FDM | Frequency Devision Multiplexing | Frequenz-Multiplex | | | |
| FEC | Forward Error Correction | Vorwärts-Fehler-Korrektur | | | |
| FFE | Feed Forward Equalizer | | | | |
| FEXT | Far End Cross Talk | | | | |
| FIC | Full Range Wavelength Independent Coupler | | | | |
| Ficon | | IBM-Standard für SAN | | | |
| FM | Frequency Modulation | Frequenzmodulation | | | |
| FOC | 1. Fiber Optic Cable | | | | |
| FOC | 2. Fiber Optic Components | | | | |
| FP Laser | Fabry-Perot Laser | | | | |
| FSK | Frequency Shift Keying | | | | |
| FTTC | Fiber To The Curb | | | | |
| FTTH | Fiber To The Home | | | | |
| FTP | Foil Twisted Pair | | | | |
| FTP | File Transfer Protocol | | | | |
| FWM | Four Wave Mixing | Vierwellenlängenmischung | | | |
| GCC | General Communication Channels | | | | |
| GF | Glas Fibre (Fiber) | Glasfaser | | | |
| GFF | Gain Flattening Filter | | | | |
| GPON | | | | | |
| GMPLS | Generalized Multiprotocol Label Switching | | | | |
| GVD | Group Velocity Dispersion | | | | |
| HRL | High Return Loss | | | | |
| IaDI | Intra-Domain Interface | | | | |
| HDCP | High-Bandwith Digital Content Protection | | | | |
| HDMI | High Definition Multimedia Interface | | | | |
| HF | High Frequency | Hochfrequenz | | | |
| HFC | Hybrid Fibre Coax | | | | |
| HTTP | Hypertext Transfer Protocol | | | | |
| IEC | International Electrotechnical Commission | | | | |
| IL | Insertion Loss | Einfügedämpfung | | | |
| IM | Intensity Modulation | Intensitätsmodulation | | | |
| IP | Internet Protokoll | Internet Protocol | | | |
| IrDI | International registration data identifier | | | | |
| IrDI | Infrared Data Interface | | | | |
| Inter-Domain Interface | | | | |
| ISDN | Integrated Services Digital Network | | | | |
| ISP | Internet Service Provider | | | | |
| TU | International Telecommunication Union | | | | |
| JME | | Jones-Matrix-Eigenanalyse | | | |
| L-Band | Long Band | erweitertes Übertragungsband (1565-1625 nm) | | | |
| LAN | Local Area Network | | | | |
| LD | Laser Diode | Laserdiode | | | |
| LEAF | Large Effective Area Fibre | Faser mit großer effektiver Länge | | | |
| LWL | Light Waveguide | Lichtwellenleiter | | | |
| LWP | Low Water Peak | | | | |
| MAN | Metropolitan Area Network | Metronetz | | | |
| MEMS | Micro Electro Mechanical System | | | | |
| MER | Modulation Error Ratio | | | | |
| MFD | Mode Field Diameter | Modenfelddurchmesser | | | |
| MGCP | Media Gateway Control Protocol | | | | |
| MLM Laser | Multi Longitudinal Mode Laser | | | | |
| MLSE | Maximum Likelihood Sequence Estimation | | | | |
| MM | | Multimode | | | |
| MMF | Multimodefaser | | | | |
| MOS | Mean Opinion Score | | | | |
| MPI | Multipath Interference | Mehrweginterferrenz | | | |
| MPLS | Multiprotocol Label Switching | | | | |
| MSPP | Multi Service Provisioning Platform | | | | |
| MUX | Multiplexer | | | | |
| MZ Filter | | Mach-Zehnder Filter | | | |
| NA | Numerical Aperture | Numerische Apertur | | | |
| NAP | Network Access Point | | | | |
| NE | Network Element | | | | |
| NE 1, 2, 3, 4 | Network Level | Netzebene | | | |
| NEXT | Near End Crosstalk | | | | |
| NIR | Near Infrared | Nahes Infrarot | | | |
| NMI | Network-Management Interface | | | | |
| NNI | Network-Network Interface | | | | |
| NRZ | Non-Return to Zero | | | | |
| NZDF | Non-Zero Dispersion (shifted) Fiber | dispersionsverschobene Faser | | | |
| NZDSF | Non Zero Dispersion Shifted Fiber | dispersionslose Faser | | | |
| ODF | Optical Distribution Frames | | | | |
| O/E | Optical to Electrical conversion | opto-elektrischer Wandler | | | |
| O/E/O | Optical to Electrical to Optical conversion | | | | |
| OADM | Optical Add-Drop-Multiplexer | Optischer Add-Drop-Wandler | | | |
| OB | Optical Booster | | | | |
| OCC | Optical Channel Carrier | | | | |
| Optical Channel Controller | | | | |
| OCG-n | Optical Channel Carrier Group of level n | | | | |
| OCh | Optical Channel | | | | |
| ODMX | Optical DeMultiplexer | | | | |
| ODU | Optical Channel Data Unit | | | | |
| ODX | Optical Demultiplexer | | | | |
| OEIC | Opto Electronical Integrated Circuit | | | | |
| OFA | Optical Fibre Amplifier | Optischer Faserverstärker | | | |
| OFDM | Orthogonal Frequency Division Multiplexing | | | | |
| OLT | Optical Line Termination | | | | |
| OMS | Optical Multiplex Section | | | | |
| OMU | Optical Multiplex Unit | | | | |
| OMX | Optical Multiplexer | | | | |
| ONT | Optical Network Terminal | | | | |
| ONT | Optical Network Termination | | | | |
| ONU | Optical Network Unit | | | | |
| OP | Optical Preamplifier | | | | |
| OPLL | Optical Phase Lockes Loop | | | | |
| OPU-k | Optical Channel Payload Unit | | | | |
| ORL | Optical Return Loss | Optische Rückflußdämpfung | | | |
| ORR | Optical Rejection Ratio | Optisches Signaltrennungsverhältnis | | | |
| OSA | Optical Spectrum Analyser | Optischer Spektrum-Analyser | | | |
| OSC | Optical Supervisory Channel | Optischer Überwachungskanal | | | |
| OSI | Open Systems Interconnection | | | | |
| OSNR | Optical Signal to Noise Ratio | Optisches Signal-Rausch-Verhältnis | | | |
| OTDM | Optical Time Division Multiplex | Optisches Zeitbereichs-Multiplex | | | |
| OTDR | Optical Time-Domaine Reflectometry | Optische Rückstreumesstechnik | | | |
| OTH | Optical Transmission Hierarchy | | | | |
| OTM | Optical Transmission Module | | | | |
| OTN | Optical Transport Network | Optisches Transportnetz | | | |
| OTN | Optical Transmission Network | | | | |
| OTO | optical telecommunication outlet | Optische Telekommunikationsdose | | | |
| OTS | Optical Transmission Section | | | | |
| OTT | Over-the-top content | | | | |
| OTU | Optical Channel Transport Unit | | | | |
| OXC | Optical CrossConnect | Optischer Cross-Connect | | | |
| PBG | Photonic Bandgap | | | | |
| PBX | Private Branch Exchange | | | | |
| PC | Physical Contact | Physikalischer Kontakt | | | |
| PCF | Photonic Crystal Fiber | Photonische Kristallfaser | | | |
| PCM | Puls Code Modulation | | | | |
| PD | Photodiode | | | | |
| PDF | Probability Density Function | Wahrscheinlichkeits-Dichtefunktion | | | |
| PDG | Polarization Dependent Gain | polarisationsabhängige Verstärkung | | | |
| PDH | Plesiochronous Digital Hierarchy | Plesiochrone Digitale Hierarchie | | | |
| PDL | Polarization Dependant Loss | polarisationsabhängige Dämpfung | | | |
| PIN-Diode | Positively-Intrinsic-Negatively doped Diode | | | | |
| PiMF | | Paar in Metallfolie | | | |
| PLC | Planar Lightwave Circuit | | | | |
| PM | 1. Performance monitoring | | | | |
| PM | 2. Polarization Maintaining | | | | |
| PMD | Polarization Mode Dispersion | Polarisationsmodendispersion | | | |
| POF | Plastic Optical Fibers | | | | |
| PON | Passive Optical Network | Passives optisches Netz | | | |
| POP | Point of Presence | | | | |
| PSK | Phase Shifted Keying | | | | |
| PtP | Point to Point | | | | |
| QAM | | Quadraturamplitudenmodulation | | | |
| QDST | | quartemäre dispersionsunterstützte Übertragung | | | |
| QoS | Quality of Service | | | | |
| RBW | Resolution Bandwidth | | | | |
| RF | Radio Frequency | | | | |
| RFA | Raman Fiber Amplifier | Raman-Faserverstärker | | | |
| RFoG | Radio Frequency over Glass | | | | |
| RSB | Restseitenband | | | | |
| RTCP | Real Time Control Protocol | | | | |
| RTP | Real-Time Transfer Protocol | | | | |
| RX | Receiver | Empfänger | | | |
| Rx | Receive | | | | |
| RZ | Return to Zero | | | | |
| S-Band | Short Band | Übertragungsband für Wellenlängen von 1460 nm bis 1530 nm | | | |
| SAN | Storage Area Network | | | | |
| SBS | Stimulated Brillouin Scattering | | | | |
| SDH | Synchronous Digital Hierarchy | Synchrone digitale Hierarchie | | | |
| SFP | Small Form-Factor Pluggable | | | | |
| S/FTP | Screened Foil Twisted Pair | | | | |
| SLA | Service Level Agreement | | | | |
| SLA | Semiconductor Laser Amplifier | Halbleiter-Laserverstärker | | | |
| SLM Laser | Single Longitudinal Mode Laser | | | | |
| SM | Singlemode | | | | |
| SMF | Single Mode Filter | | | | |
| S/N | Signal-to-Noise-Ratio | | | | |
| SOA | Semiconductor Optical Amplifier | | | | |
| SONET | Synchronous Optical Network | | | | |
| SOP | State of Polarization | | | | |
| S/PRI | | | | | |
| SPM | Self Phase Modulation | | | | |
| SRS | Stimulated Raman Scattering | | | | |
| SSMF | Standard Single Mode Fiber | Standard-Singlemode-Faser | | | |
| S/STP | Screened Shielded Twisted-Pair | | | | |
| STM-n | Synchronous Transport Module of level n | | | | |
| S/UTP | Screened Unshielded Twisted-Pair | | | | |
| TAD | | Teilnehmeranschlussdose | | | |
| TAE | | Telekommunikationsanschlusseinheit | | | |
| TCM | Tandem Connection Monitoring | | | | |
| TDM | Time Division Multiplexing | | | | |
| TMN | Telecommunication Management Network | | | | |
| TTI | Trail Trace Identifier | | | | |
| Tx | Transmit | | | | |
| üBKVrST | | übergeordnete BK-Verstärkerstelle | | | |
| ÜP | | Übergabepunkt | | | |
| UNI | User-Network Interface | | | | |
| USP | Uninterrupted Power Supply | | | | |
| UTP | Unshielded Twisted-Pair | | | | |
| VCSEL | Vertical Cavity Surface Emitting Laser | | | | |
| ViMF | | Vierer in Metallfolie | | | |
| VOA | Variable Optical Attenuator | | | | |
| WDM | Wavelength Division Multiplexing | Wellenlängenmultiplex | | | |
| WG | WaveGuide | Wellenleiter | | | |
| XPM | Cross-Phase Modulation | | | | |
| 3R | Re-Amplification, Re-Shaping, Re-Timing | | | | |
| 5G | | | | | |
| 10 GEPON | 10 GB-Ethernet-PON | | | | |
| 10GPON | 10 Gbit-GPON | | | | |