Optical Splitter & dB Loss Loss Calculator

July 18, 2025

Latest company news about Optical Splitter & dB Loss Loss Calculator

Calculate Optical Splitter Loss Step by Step

Note that calculations will display automatically after data entry.

Step 1. Distance

Cable Distance

(Distance as measured in the system.)

Loss per Km

(This value should be obtained from the cable manufacturer.)
 dB/Km

Total Fiber Loss

(Cable Distance x Loss per Km)
 dB
 

Step 2. Total Connector Loss

Connector Pair Loss 

(the maximum connector pair loss permitted for installation. This value should be determined by the system designer. ANSI/TIA/EIA-568-B.3 recommends a maximum value of 0.75 dB.)
 dB

Number of Connector Pairs

(This does not include the connectors that plug into the end equipment.)

Total Connector Loss 

(Connector Pair Loss x Number of Connector Pairs)
 dB
 

Step 3. Total Splice Loss

Individual Splice Loss

(The maximum splice loss permitted for installation. This value should be determined by the system designer. ANSI/TIA/EIA-568-B.3 recommends a maximum value of 0.3 dB for a fusion or mechanical splice.)
 dB

Number of Splices

(This includes fusion and mechanical splices.)

Total Splice Loss

(Individual Splice Loss x Number of Splices)
 dB
 

Step 4. Total Other Components Loss

Optical Bypass Switch Loss

(This value should be obtained from the switch manufacturer.)
 dB

Optical Splitter Loss

(This value should be obtained from the splitter manufacturer.)
 dB

Other Optical Components Loss

(An example of other optical components are passive concentrators. Enter the value here for any optical components other than the switch and splitter. These values should be obtained from the the component manufacturer.)
 dB

Total Other Components Loss

(Optical Bypass Switch Loss + Optical Splitter Loss + Other Optical Components Loss)
 dB
 

Step 5. Manufacturer's Electronics Specifications

Average Transmitter Output

(This value should be obtained from the transmitter manufacturer. If a specification for Average Transmitter Output is not available, use the specification for Minimum Output Power.)
 dBm

Minimum Receiver Sensitivity

(This value should be obtained from the receiver manufacturer.)
 dBm

System Gain

(= Average Transmitter Output - Minimum Receiver Sensitivity)
 dB
 

Step 6. Total Power Penalties

Power Penalties

(This value should be obtained from the equipment manufacturer. If no value is provided, use 2.0 dB.)
 dB

Repair Margin

(A value of 0.6 dB (2 splices x 0.3 dB loss per splice) is typically used.)
 dB

Total Power Penalty

(= Power Penalties + Repair Margin)
 dB
 

Step 7. Link Loss Budget

System Gain

(= Average Transmitter Output - Minimum Receiver Sensitivity)
 dB

Total Power Penalty

(= Power Penalties + Repair Margin)
 dB

Total Link Loss Budget

(= System Gain - Power Penalties)
 dB
 

Step 8. System Performance Margin

Total Link Loss Budget

(= System Gain - Power Penalties)
 dB

Total Cable System Attenuation

(= Total Fiber Loss + Total Connector Loss + Total Splice Loss + Total Other Components Loss)
 dB

System Performance Margin

(= Total Link Loss Budget - Total Cable System Attenuation)
 dB
TTI FIBER - A FIBER CABLE MANUFACTURER IN CHINA

View More Details - Why Does Splitting Light Cause Loss Anyway?