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OLT optical module type

*

Select an optical module type.
ONU optical module type

*

Select an optical module type.
Split ratio of the level-1 optical splitter

*

Select an optical splitter type.
Split ratio of the level-2 optical splitter

Split ratio out of maximum range
Enable WDM1r
Enable EDFA
Enable EDFA

{{item.name}}

*

{{item.name}}*

-
+

{{item.unit}}

Please enter the fiber length.
Tips: Adjust the fiber length. This is because the maximum physical reach cannot be longer than {{tipMaxOpticalFiberLengthValue}}km (including the feeder fiber, distribution fiber, and drop fiber).

Please enter the number of connectors in the feeder fiber section.

{{item.name}}

{{item.name}}

-
+

{{item.unit}}

Please enter the number of connectors in the distribution fiber section.

{{item.name}}

{{item.name}}

-
+

{{item.unit}}

Please enter the number of connectors in the drop fiber section.
Downstream link attenuation (OLT to ONU)
Link attenuation

{{downDecay('down')}} dB

Abnormal

Normal

Normal range: {{minAttenuationOlt}} dB - {{maxAttenuationOlt}} dB

Suggestion: If the optical attenuation is over-small, click Query Detailed Budget, and then increase the optical attenuation according to the displayed optical attenuation parameters.
Suggestion: If the optical attenuation is over-large, click Query Detailed Budget, and then decrease the optical attenuation according to the displayed optical attenuation parameters.
Upstream link attenuation (ONU to OLT)
Link attenuation

{{downDecay('up')}} dB

Abnormal

Normal

Normal range: {{minAttenuationOnu}} dB - {{maxAttenuationOnu}} dB

Suggestion: If the optical attenuation is over-small, click Query Detailed Budget, and then increase the optical attenuation according to the displayed optical attenuation parameters.
Suggestion: If the optical attenuation is over-large, click Query Detailed Budget, and then decrease the optical attenuation according to the displayed optical attenuation parameters.

* In this tool, the optical attenuation value is a typical value. If you need to customize the attenuation, click

Customize Attenuation.
PON Link Planning
No.NameData
1OLT optical module type{{oltTypeName}}
2ONU optical module type {{onuTypeName}}
3Split ratio of the level-1 optical splitter {{oneSplitterName}}
4Split ratio of the level-2 optical splitter {{twoSplitterName}}
5Length of the feeder fiber{{feederLength}}

km

6Length of the distribution fiber{{wiringLength}}

km

7Length of the drop fiber{{accessLength}}

km

Optical Attenuation of PON Links
No.NameTypeAttenuation (dB)Data
1 Optical attenuation/km Downstream 0.3 {{lengthTotal}}

km

Upstream 0.4 {{lengthTotal}}

km

2 Connecting point Fusion splicing 0.1 {{dataNumber(0)}}
Mechanical splicing 0.2 {{dataNumber(1)}}
Connector 0.3 {{dataNumber(2)}}
FMC 0.5 {{dataNumber(3)}}
3 Split ratio 1:256 28.3 {{splitterNum('1:256')}}
1:128 24.3 {{splitterNum('1:128')}}
1:64 20.3 21.2 {{splitterNum('1:64')}}
1:32 16.8 17.8 {{splitterNum('1:32')}}
1:16 13.6 14.4 {{splitterNum('1:16')}}
1:8 10.3 11.1 {{splitterNum('1:8')}}
1:4 7.2 7.8 {{splitterNum('1:4')}}
1:2 3.8 4.5 {{splitterNum('1:2')}}
2:256 29.3 {{splitterNum('2:256')}}
2:128 25.3 {{splitterNum('2:128')}}
2:64 21 21.4 {{splitterNum('2:64')}}
2:32 17.4 18 {{splitterNum('2:32')}}
2:16 14.3 14.7 {{splitterNum('2:16')}}
2:8 11 11.4 {{splitterNum('2:8')}}
2:4 7.5 8.1 {{splitterNum('2:4')}}
2:2 4.1 4.8 {{splitterNum('2:2')}}
4Redundancy Fiber ≤ 5 km 1

5 km < Fiber < 10 km 2

Fiber ≥ 10 km 3

5 Optical component WDM1r 0.8

×

Integrated EDFA 0.8

×

5 Optical component WDM1r 1

×

5 Optical component Integrated EDFA 0.8

×

Calculation Result
No.NameFormulaEstimation
1Downstream link attenuation(Upstream/Downstream) Optical attenuation/km x Optical fiber length + Attenuation of the fusion splicing point x Number of the fusion splicing points + Attenuation of the mechanical splicing points x Number of mechanical splicing points + Attenuation of the connectors x Number of the connectors + Attenuation of the FMCs x Number of the FMCs + Attenuation of the optical splitter + Redundancy+Attenuation of the optical component

{{downDecay('down')}} dB

Normal range: {{minAttenuationOlt}} dB - {{maxAttenuationOlt}} dB

2Upstream link attenuation

{{downDecay('up')}} dB

Normal range: {{minAttenuationOnu}} dB - {{maxAttenuationOnu}} dB

Related Links
ODN Basics