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Fiber Optic Splitter Loss You Should Know

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Fiber Optic Splitter has two main types, PLC fiber optic splitter and FBT fiber splitters. Whatever you choose for your application, You should take fiber splitter loss into consideration. There are some standard parameters for these splitters, if the fiber splitter loss is too much higher than this standards, It would be not good for your application.

FBT Fiber Optic Splitter Loss without Connectors

Even Split RatioInsertion Loss (dB)
1×23.6 – 4.0
1×35.0 – 5.5
1×46.2 – 7.0

FTTH PLC Fiber Optic Splitter Loss without Connectors

FTTH PLC Fiber Optic Splitter Loss without Connectors
FBT Splitters

Let’s take a look Fiber Optic Splitter Loss separately. You can learn more details about Fiber Optic Splitter Loss with more factors considered.

1X2 FTTH FBT Fiber Optic Splitter Loss Chart

1X2 FBT Fiber Optic Splitter is almost the most used FBT Fiber Optic Splitter as it can be splitted with different ratios for projects. Here you can have the typical Loss Chart in the below:

ParameterWide Band Coppler (WBC)Dual Window Coupler (DWC)Multimode Fiber Coupler (MMC)
GradePAPAPA
Operating Wavelength (nm)1310, 1550 or C+L Band1310 and 1550850 or 1310 or Specify
Operating Bandwidth (nm)±40±40±40
Typical Excess Loss (dB)<0.07<0.1<0.07<0.1<0.4<0.7
50/50<3.4<3.6<3.4<3.6<3.7<4.0
40/60<4.4/2.6<47/2.8<4.4/2.6<4.7/2.8<47/2.7<5.0/3.0
30/70<5.7/1.9<6.0/2.0<57/1.9<6.0/2.0<6.0/2.1<6.3/2.4
20/80<7.6/1.25<8.0/1.3<7.6/1.25<8.0/1.3<7.8/1.4<8.1/1.7
Insertion Loss(dB)10/90S10.65/0.65^10.9/0.80.65/0.65<10.9/0.8311.2/0.9^11.6/1.2
5/95<13.8/0.4<14.1/0.5<13.8/0.4<14.1/0.5<14.5/0.7<15.0/1.0
3/97<16.15/0.3<16.5/0.4<16.15/0.3<16.5/0.4<16.15/0.3<16.5/0.4
2/98<18.05/0.25<18.45/0.35<18.05/0.25<18.45/0.35<18.6/0.6<19.4/0.9
1/99<21.15/0.2<21.65/0.3<21.15/0.2<21.65/0.3<22/0.5<22.8/0.8
Polarization Dependent Loss (dB)<0.1<0.15<0.15<0.2<0.1<0.15
Directivity (dB)>50>35
Operating Temperature (°C)-10 ~+70
Storage Temperature (°C)-40 〜+85
1X2 FBT Fiber Optic Splitter Loss Chart

FTTH 1×3, 1×4, 1×5, 1×6 FBT splitter loss chart

ConfigurationType1×31×41×51×6
GradePAPAPAPA
Maximuminsertionloss(dB)5.866.877.88.58.79.5
Uniformity(Max.)(dB)0.811.21.2
PolarizationDependantLoss(Max.)(dB)0.150.150.20.2
Directivity(dB)>55dB
OperatingTemperatureminus 20°C ~ 85°C
StorageTemperature-40°C~+85°C
FiberTypeCorning Singlemode SMF-28
FiberPigtailLength(m)1m or Custom on Request
PortConfiguration1×3 to 1X6
OperatingWavelength(nm)1310+40,1550+40,1310/1550nm±40
1×3, 1×4, 1×5, 1×6 FBT splitter loss chart

Typical FTTH PLC Splitter Loss Chart

Input x Output Port Number1×21×41×81×161×321×64
Optical Fiber Diameterum9/125
Operating Wavelengthnm1260- 1650
Insertion Loss (include PDL)TypicalB≤ 3.6≤7.0≤ 10.3≤ 13.6≤ 16.6≤20.1
MaxB47.110.513.716.921
Uniformity’ MaxB0.50.711.522
PDL MaxB0.30.30.30.30.30.5
Return LossB≥50≥50≥50>50≥50≥50
Directivity’B≥ 55≥ 55≥ 55≥ 55≥ 55≥ 55
Output Fiber Type4-fiberribbonx14-fiber  ribbonx28-fiber  ribbonx28-fiber  ribbonx48-fiberribbonx8
Case Size (For bare Fiber)mm40(L)x4(W)x4(H)50(L)x7(W)x4(H)60()x12M) x4(H)
Case Size* (For 0.9 LooseTube)mm60(L)x7(W)x4(H60(L)x20(W)x4(H)80(L)x20 (W) x6(H)100(L)x40(W)x6(H)
Operation Temperature-40~ 85
Characteristics Are Characteristics without connectors under room temperature at 1310nn/1550 nm

How to measure FTTH fiber optic splitter insertion loss with calculation?

The maximum allowable insertion loss for an optical splitter used in a PON system can be determined by using the calculations outlined in the below table.

The maximum allowable insertion loss
1×N Optical Splitter0.8 + 3.4 log2N
2×N Optical Splitter1.0 + 3.4 log2N
 Note: ‘N’ denotes the number of output ports.

Conclusion

In certain areas, temperature can be a crucial factor that affects the insertion loss of optical components. FBT splitter can work stable under the temperature of -5 to 75℃. PLC splitter can work at a wider temperature range of -40 to 85 ℃, providing relatively good performance in the areas of extreme climate.

When it comes to wholesaling fiber optic splitters, You can contact bativ as your suppliers with good quality at low cost.