Difference between PLC Splitter and FBT Coupler
2020-04-27| Parameters | PLC Splitter | FBT Coupler |
| Operating Wavelength | 1260nm -1650nm (full wavelength) | Single window, dual windows, Triple windows max., 1310/1550±40nm,1490±10nm |
| Coupling Ratio | Equal | Customized, can be equal or unequal |
| Insertion Loss | The maximum insertion loss of each splitting ratio is stimulated by Telcordia GR-1209 and GR-1221. | The maximum insertion loss will vary depending on the splitting ratio and increase substantially for those splits over 1:8. |
| Performance | Good for all splits of 1×2, 1×4, 1×8, 1×16, 1×32, 1×64. High level of reliability and stability. | Up to 1×8, reliable. For larger splitting, reliability will become an issue. |
| Input | One or two inputs | One or two inputs |
| Output | 128 fibers max. | 32 fibers max. |
| Package | Blockless, plastic box, rack mount, etc. | Steel tube, plastic box, rack mount, etc. |
| Package Size | Smaller | Bigger |
| Application | FTTH | HFC (Hybrid Fiber Coaxial), CATV |
| Manufacturing Method | Consists of one optical chip and several optical fiber arrays depending on the output ports. The optical fiber arrays are coupled on both ends of the chip. | Two or more pieces of optical fibers are bound together and put on a fused-taper fiber device. The fibers are then drawn out according to the output ports and coupling ratio with one or two fibers being singled out as the input. |
| Cost | Lower for more than 1×16 | Lower for smaller than 1×8 |
Author: FirstFiber.cn