A network engineer wants to run a 10Gbps signal and a 1Gbps signal over a single strand of fiber simultaneously using a BiDi (Bidirectional) transceiver system. How does a BiDi system separate the transmit and receive signals on one fiber?
Answers
AIt uses polarization of the light (horizontal vs vertical)
BIt uses two different wavelengths (e.g., 1310nm TX / 1490nm RX) and a WDM diplexer inside the transceiver
CIt relies on standard physical separation inside the core
DIt uses time-division multiplexing to take turns sending and receiving
The answer and explanation are in the full bank.
This question is one of 2,831 in the paid banks. Each comes with the correct answer and the reasoning behind it, not just a mark.
Unlock for 5,000 RWFMIFOTRA exam practicealigned to TIA-568.3-D / ITU-T G.652·4 marks·Hard
More Fiber Optics questions
- Which standard category represents the highest performance laser-optimized multimode fiber suitable for 100Gbps over short distances?
- A mechanical splice is showing a loss of 1.5 dB on a single-mode link. The tech pulls it apart, cleans it, and puts it back together, but it still reads 1.5 dB. The fiber ends were cleaved at a perfect 90-degree angle. What is missing?
- Why is 850nm strictly used for multimode fiber, while 1310nm and 1550nm are used for single-mode fiber?
- A technician strips the 250-micron acrylate coating off a fiber to prepare it for fusion splicing. They immediately put it into the cleaver without doing anything else. The splice machine rejects the fiber due to poor cleave angles. What step was skipped?
- An OTDR trace on a 10km link shows a massive drop at 5km, but no reflectance spike. What is the most likely cause of this event?
- You are installing an FTTH router. The provider explicitly requires an APC connector, but you patch an SC/UPC cable into the SC/APC port. What happens?
- A technician is using a dead-zone box (launch ring) of 1000m to test a 500m fiber link. Why is the launch cable longer than the link being tested?
- During an OLTS test, the technician sets a reference by connecting the light source and power meter with a single reference cord. Then, they add a second cord to test the link. What is this referencing method called?