LWL
Based on the fiber optic network infrastructure on the campus, a wide variety of configurations can be built.
pros and cons of using fiber optic technologies for networks
| pros | cons |
|---|---|
| - maximum signal bandwidths and long ranges possible | - high aquisition price for active network components |
| - no external electromagnetic interference | - new tools and measuring equipment must be procured |
| - no electrical potential | - no automatic detection and adjustment of transmission speed, both partners need to have constructively the same properties |
| - permitted to be routed together with power lines in one duct/pipe | - usually you always need two fibers for one connection (transmit and receive) |
| - no crosstalt effects | - Bending properties of fiber optic cables have to be regarded in the same way as for patch cables when installing the cables in buildings. Pulling around corners may lead to higher attenuation and even to the interruption of signal transmission. |
| - high security against eavesdropping | |
| - can be used in hazardous areas | |
| - economical, as higher investment protection due to longer amortization period |
The bandwidths currently reach, but this requires the multimode fiber core type up to 400 Gbit/s.
| Index | Designation | Max. length | Fiber | Wavelength | Norm |
|---|---|---|---|---|---|
| 1 | 10Base-FL | 2km | Multimode, OM1 to OM5 | 850nm | IEEE 802.3 |
| 2 | 100Base-FX | 400m/ 2km | Multimode, OM1 to OM5 / if connected via switches | 1310nm | IEEE 802.3 |
| 3 | 100Base-SX | 300m | Multimode, OM1 to OM5 | 850nm | IEEE 802.3 |
| 4 | 1000Base-LX | 550m/ 2km | Multimode, OM1 to OM5 / Singlemode OS1 | 1310nm | IEEE 802.3 |
| 5 | 1000Base-SX | 500m | Multimode, OM1 to OM5 | 850nm | IEEE 802.3 |
| 6 | 10GBase-LR | 10km | Singlemode, OS1 | 1310nm | IEEE 802.3ae |
| 7 | 10GBase-SR | 300m, 550m (OM5) | Multimode, OM3 to OM5 | 850nm | IEEE 802.3ae |
| 8 | 10GBase-ER | 40km | Singlemode, OS1 | 1550nm | IEEE 802.3ae |
| 9 | 10GBase-LX4 | 300m/10km | Multimode, OM1 to OM5 / Singlemode OS1 | 1275nm,1300nm, 1325nm, 1350nm | IEEE 802.3 |
| 10 | 40GBase-LR4 | 10km | Singlemode, OS2 | 1310nm | IEEE 802.3ba |
| 11 | 40GBase-SR4 | 100m (OM3,4), 190m (OM5) | Multimode, OM3 to OM5 | 850nm | IEEE 802.3ba |
| 12 | 40GBase-SWDM4 | 300m | Multimode, OM5 | 850nm, 880nm, 910nm, 940nm (FMP) | IEEE 802.3ba |
| 13 | 100GBase-ER4 | 40km | Singlemode, OS2 | 1550nm | IEEE 802.3ba |
| 14 | 100GBase-SR4 | 70m (OM3), 100m (OM4), 190m (OM5) | Multimode, OM3 bis OM5 | 850nm | IEEE 802.3bm |
| 15 | 100GBase-SR10 | 100m(OM3), 150m (OM4), 190m (OM5) | Multimode, OM3 bis OM5 | 850nm | IEEE 802.3ba |
| 16 | 100GBase-SWDM4 | 300m | Multimode (OM5) | 850nm, 880nm, 910nm, 940nm (FMP) | IEEE 802.3ba |
| FMP…Frequency-Multiplex-Procedure |
safety measures for fibre optic network systems
- Never look into open FO sockets or plugs!
- When no cables are connected, always close fiber optic sockets on media converters, patch panels and switches with the appropriate protective caps!
- If possible, install fiber optic network components away from generally accessible rooms!
- Secure fiber optic measuring and test equipment during work breaks!
- Never touch the ends of an optical fiber, as the pure optical fiber effortlessly breaks through the skin barrier!
- Carefully clean the area around the “construction site” of fiber residues and grinding dust after working on fiber optic nets. Do not stir up any particles! Use damp cleaning rags and cloths and dispose of them afterwards in sealable plastic bags.