Which one of the following can be used to test the characteristic
| Which one of the following can be used to test the characteristics of an OFC?
A. OTMM (Optical Transceiver Monitoring Module)
B. DTDR (Digital Time Domain Reflectometer)
C. OTDR (Optical Time Domain Reflectometer)
D. OFCM (Optical Fiber Communication Module)
Please scroll down to see the correct answer and solution guide.
Right Answer is: C
SOLUTION
- The Optical Time Domain Reflectometer (OTDR) is useful for testing the integrity of fiber optic cables (OFC).
- It can verify splice loss, measure the length, and find faults.
- The OTDR is also commonly used to create a "picture" of fiber optic cable when it is newly installed.
- Later, comparisons can be made between the original trace and a second trace taken if problems arise.
- The OTDR consists of a high power laser transmitter that sends a pulse of light down the fiber.
- Back-scattered light and reflected light returns to the OTDR through the fiber and is directed to a sensitive receiver through a coupler in the OTDR front end.
- For each measurement, the OTDR sends out a very high power pulse and measures the light coming back over time.