Get Return Loss Vs

Return loss is the loss of signal power due to signal reflection or return by a discontinuity in a fiber-optic link or transmission line. This impedance mismatch can be with a device inserted in the line or with the terminating load.

So, to get back to your specific question, return loss measures the signal reflected back from the input of the filter. Mismatch is the cause of this loss. But mismatch loss measures the amount of power transmitted through the filter.

The power loss of the reflected or returned signal is known as the return loss (RL). Insertion loss is mainly the measurement of the resulting signal value when the optical link encounters loss, while return loss is the measurement of the reflected signal loss value when the optical link encounters component access.

What is Insertion Loss? Insertion loss is the amount of energy that a signal loses as it travels along a cable link. It is a natural phenomenon that occurs for any type of transmission—whether it's electricity or data.

A “good” connector has a return loss below -13 dB and will have minimal impact on the insertion loss and a “bad” connector will have a return loss larger than -13 dB. It may still work in the system, but you have to do your own analysis to determine if it is still acceptable.

Insertion Loss / Return Loss Insertion Loss, Return Loss and Attenuation. Insertion Loss = 10 * Log (Incident power (W) / Transmitted power (W)) Return Loss = 10 * Log (Incident(W) / Reflected power(W))

What is Return Loss: Return loss is a measure of VSWR (Voltage Standing Wave Ratio), expressed in decibels (db). The return-loss is caused due to impedance mismatch between two or more circuits. For a simple cable assembly, there will be a mismatch where the connector is mated with the cable.