Question

Attenuation in optical fibre can be measured in:

• A. KdB/m
• B. dB/m
• C. dB/km
• D. dB/mm

Hint:

In optical fibre, attenuation is the reduction in signal strength, typically expressed in dB per meter.

Answer 1

The Correct Option is B

Attenuation in optical fibres is typically expressed in decibels per meter (dB/m). This represents the loss of signal strength per unit length as the signal travels through the fibre.
While other units such as dB/km and dB/mm can be used in different contexts, dB/m is the most commonly used unit in practical applications.
Final Answer: \[ \boxed{\text{(2) dB/m}} \]