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| network:fibers [2019/05/31 11:35] – created niziak | network:fibers [2024/03/13 08:39] (current) – niziak | ||
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| ===== Multimode MM ===== | ===== Multimode MM ===== | ||
| - | | + | |
| - | * OM2 | + | Core diameter 50 or 62,5 micron. |
| - | * OM3 | + | Lower cost of LED sources and lasers operation at 850nm and 1300nm. |
| - | * OM4 | + | |
| + | * OM2 50/125 um (up to 622Mbit / 10Gbit @82 meters) - popular | ||
| + | * OM3 50/125 um (850nm laser optimized up to 10Gbit/s / 10 Gbit @300 meters) | ||
| + | * OM4 50/125 um (850nm laser optimized up to 100Gbit/s / 10 Gbit @550 meters) | ||
| ===== Single Mode SM ===== | ===== Single Mode SM ===== | ||
| + | |||
| + | Wavelength 1310 or 1550 nm. | ||
| + | |||
| * OS1 ITU-T G.652A or ITU-T G.652B | * OS1 ITU-T G.652A or ITU-T G.652B | ||
| - | * tight-buffered construction, which is usually used for indoor applications, | + | * Indoor (tight-buffered construction) |
| * max att 1.0 db/km | * max att 1.0 db/km | ||
| * max distance 1km | * max distance 1km | ||
| Line 15: | Line 21: | ||
| * OS2 | * OS2 | ||
| + | * Outdoor (loose-tube design) | ||
| * are only compliant with ITU-T G.652C or ITU-T G.652D standards. | * are only compliant with ITU-T G.652C or ITU-T G.652D standards. | ||
| * which means OS2 is explicitly applied to the low-water-peak fibers. These low-water-peak fibers are usually used for CWDM (Coarse Wavelength Division Multiplexing) applications. | * which means OS2 is explicitly applied to the low-water-peak fibers. These low-water-peak fibers are usually used for CWDM (Coarse Wavelength Division Multiplexing) applications. | ||
| - | * is loose-tube design | ||
| * appropriate for outdoor cases like street, underground and burial | * appropriate for outdoor cases like street, underground and burial | ||
| * max att 0.4db/km. | * max att 0.4db/km. | ||
| * max distance 10 km | * max distance 10 km | ||
| + | * G.652D | ||
| + | * full spectrum fibers (no high loss in 1360 – 1460 nm) | ||
| + | * suitable for WDM | ||
| + | |||
| + | ====== Transmit Window ====== | ||
| + | * 850 nm - I (MM) | ||
| + | * 1300 nm - II (MM) | ||
| + | * 1310 nm - II (SM) | ||
| + | * 1550 nm - III (SM) | ||
| + | * 1625 nm - IV | ||
| + | |||
| + | ====== cable color ===== | ||
| + | |||
| + | * Yellow - single mode | ||
| + | * White - for end user home installation - single mode | ||
| + | * Orange - multimode OM1/OM2 | ||
| + | * Turquoise - multimode OM3 | ||
| + | * Turquoise / Violet - multimode OM4 | ||
| ====== Connector ====== | ====== Connector ====== | ||
| + | Square Connectors: | ||
| + | * ST - obsolete - looks like RF BNC connector. Push and rotate to lock. | ||
| * SC - bigger (more popular, older) | * SC - bigger (more popular, older) | ||
| * LC - smaller, half size of SC (Lucent, less popular, license fees) | * LC - smaller, half size of SC (Lucent, less popular, license fees) | ||
| + | * popular for SFP adapters as full fuplex pairs with plastic lock mechanism | ||
| + | * E2000 | ||
| + | |||
| + | |||
| + | Fiber polishing: | ||
| + | * APC (Angled Physical Contact) - face of fiber is filed by 8 or 9 degree. Less attentuation. (-70dB) | ||
| + | * Marking (plug) color: GREEN. | ||
| + | * UPC/PC (Ultra Physical Contact) - polished diagonally (-40dB). | ||
| + | * Marking (plug) color BLUE or BEIGE. | ||
| + | |||
| + | ===== Pigtails ===== | ||
| + | |||
| + | End user: | ||
| + | * green rectangle plugs - FO SM SC/ | ||
| + | |||
| + | End user (Orange): | ||
| + | * green rectangle plugs and yellow cable - single mode, APC polishing | ||