Passive optical distribution
Match splitter or WDM architecture to wavelength plan, ratio, package and insertion-loss targets.
An FBT optical splitter with selectable unequal or equal power ratios, dual or triple operating windows and compact passive packaging.
Fused Biconical Taper (FBT) Optical Splitter Series is produced by aligning multiple fibers, heating and drawing the coupling region, and monitoring the output until the required power ratio is reached. The method supports both equal and unequal ratios, including 50/50, 40/60, 10/90 and other listed divisions.
FBT splitters are useful where a defined wavelength window and nonuniform ratio are part of the optical design. They should not be substituted for a PLC splitter without checking wavelength range, port count, loss and packaging.
Specify the exact split ratio, wavelength or windows, number of outputs, optical grade, package, lead fiber and connector/polish. Use the insertion-loss values for both ratio legs in the network budget, especially for asymmetric configurations.
Huijue Group can review OEM FBT assemblies with ratio, wavelength, lead length, connectors and private-label packaging defined by drawing. Sample matching is possible when the target coupling behavior is documented; process capability, test tolerance, package and quantity require approval.
| Grade | Grade P | Grade A | |
| Parameter | |||
| Operating Wavelength (nm) | 1310, 1550 or others | ||
| Operating Bandwidth (nm) | ±15 | ||
| Typical Additional Loss (dB) | ≤0.10 | ≤0.15 | |
| Insertion Loss (dB) | 50/50 | ≤3.4 | ≤3.6 |
| 40/60 | ≤4.4/2.6 | ≤4.7/2.8 | |
| 30/70 | ≤5.7/1.9 | ≤6.0/2.0 | |
| 20/80 | ≤7.6/1.2 | ≤8.0/1.3 | |
| 10/90 | ≤11.0/0.65 | ≤11.5/0.8 | |
| 5/95 | ≤14.2/0.4 | ≤14.8/0.5 | |
| 2/98 | ≤18.5/0.25 | ≤19.0/0.35 | |
| 1/99 | ≤21.5/0.2 | ≤22.0/0.3 | |
| Polarization Dependent Loss (PDL) (dB) | ≤0.10 | ≤0.15 | |
| Directivity (dB) | ≥55 | ||
| Operating Temperature (℃) | -20~+70 | ||
Install the splitter inside a package that protects the fused region and provides fiber strain relief. The enclosure, not the bare splitter alone, determines moisture and mechanical protection.
Buyer Questions
Answers specific to Fused Biconical Taper (FBT) Optical Splitter Series selection, configuration and purchasing.
FBT is often considered for a defined wavelength window or an unequal power ratio; PLC is commonly used for broad-band uniform multiport splitting. The link budget decides.
No. The two legs carry different power and have different listed insertion-loss limits.
Use the deployment context to narrow the configuration before comparing dimensions, capacities and options.
Match splitter or WDM architecture to wavelength plan, ratio, package and insertion-loss targets.
Coordinate connector, polish, fiber grade, polarity and cable length across patching points.
Plan MPO/MTP trunks and harnesses around port mapping, breakout format and rack density.
Select splicing, cleaning and test tools for the connector types and measurements used on site.
Before quotation: confirm capacity, interfaces, installation environment, power conditions, quantity and required options.