Perhitungan Link Budget Saluran Optik 1

Summary

This video focuses on the process of performing a fiber optic link budget calculation. The presenter explains how to measure an inactive optical channel using an optical power meter (OPM), outlining the necessary steps and components, such as connectors, splices, and cables. The calculation involves determining the total attenuation of the link, and the presenter demonstrates how to compare measured results with reference values to assess the condition of the optical link. The goal is to ensure the channel's performance is optimal, with the video concluding with a practical example to solidify the learning process.

Takeaways

• 😀 The video focuses on the calculation of link budget in an optical fiber system.
• 😀 Link budget calculations are crucial to assess whether an optical channel is viable or not.
• 😀 The example used in the video involves measuring an inactive optical channel of 500 meters using an optical power meter.
• 😀 The optical channel includes connectors, splices, and cables, all of which need to be considered when performing link budget calculations.
• 😀 In the example, the optical cable is 0.5 km long, and its attenuation is 0.35 dB/km for a wavelength of 1310 nm and 0.25 dB/km for 1550 nm.
• 😀 The total link budget for the example is calculated to be 0.875 dB of attenuation.
• 😀 The script emphasizes the importance of performing initial measurements, such as using an optical power meter (OPM), to obtain reference values.
• 😀 The measurement of the optical channel yielded a level of -7.35 dBm, which is used to determine the channel's total attenuation.
• 😀 A total attenuation of 0.15 dB was calculated based on the comparison between the reference and measured values.
• 😀 The conclusion drawn from the measurements is that the optical channel is in good condition, as the measured attenuation is lower than the reference link budget.

Q & A

What is the purpose of performing a link budget calculation in optical channels?

The purpose of performing a link budget calculation is to compare and obtain a reference for the link budget. This helps in determining whether an optical channel is suitable or not for use, ensuring its quality.

What is the example problem presented in the script about optical channel measurements?

The example problem involves measuring an inactive optical channel of 500 meters in length, where both ends are connected with optical connectors. The goal is to calculate the link budget for this channel.

What are the components of the optical channel described in the script?

The components of the optical channel include the connector, splice, and the optical fiber cable (500 meters long), along with connectors at both ends.

What parameters are needed for calculating the link budget in the script?

The parameters needed include the fiber's attenuation rate (e.g., 0.25 dB/km for 1550 nm wavelength), the connector losses, splice losses, and the length of the optical cable.

How is the total attenuation calculated for the optical channel?

The total attenuation is calculated by adding the losses from the connectors, splices, and the fiber cable itself. The script provides specific attenuation values for different elements, which are then summed up to find the total link budget.

What is the calculated total link budget for the described optical channel?

The total calculated link budget for the optical channel is 0.875 dB, considering the losses from connectors, splices, and the fiber's attenuation over a distance of 500 meters.

What does the negative power level measurement from the optical power meter indicate?

The negative power level measurement indicates the actual signal loss or attenuation in the optical channel when measured using the optical power meter (e.g., -7.35 dBm).

How is the total attenuation of the channel determined from the power meter readings?

The total attenuation is determined by subtracting the measured power levels at different points in the channel, such as -7.35 dBm and -7.50 dBm, which results in a total attenuation of 0.15 dB.

What can be concluded if the measured attenuation is lower than the reference link budget?

If the measured attenuation is lower than the reference link budget, it means the optical channel is in good condition, as the actual signal loss is smaller than the expected value.

What should be done if the measured attenuation is higher than the reference link budget?

If the measured attenuation is higher than the reference link budget, it indicates that the optical channel may have issues such as excessive signal loss, and further troubleshooting or repairs may be needed.