Which feature is considered equally crucial as low loss when evaluating connector performance?

• A. Low reflectance
• B. Durability of repeated mating
• C. Low cost
• D. Easy to terminate

Answer: (A)

In fiber connector performance, keeping the signal strong is essential, but so is preventing light from reflecting back toward the transmitter. Low loss measures how much signal power is preserved when the fiber is connected, and it’s a primary optical metric. Equally crucial is low reflectance, because reflected light can travel back into the light source, causing noise, instability, and potential damage in sensitive or high-power systems. So a connector that minimizes reflections—reducing back reflections to maintain signal integrity—is as important as one that minimizes insertion loss.

Durability, cost, and ease of termination matter for practical use and deployment, but they don’t directly address how much light is reflected at the connection, which is why they aren’t considered equally crucial as low loss in evaluating optical performance.