Difference between PLC Splitter and FBT Coupler

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