Difference between Duplex and Simplex in single mode fiber itself?

[13jobsp90]

What is the difference between  Duplex and Simplex in single mode fiber itself?

[ammahend]

Simplex single-mode fiber is typically used in scenarios where data only needs to be sent in one direction, such as in sensor application like a fire alarm system that sends signals from detectors to a control panel might use simplex fiber.

Duplex single-mode fiber is commonly used everywhere else where two way communication is needed such as between network switches, routers, or transceivers.

[shambhu.kumar]

Simplex fibre optic cables, also known as single-strand, have only one fibre.
Simplex fiber that transmits data unidirectionally. It is ideal for situations where data needs to be sent in one direction and does not need data sent back for any purpose.

Duplex fiber is allows data to be transmitted in two directions. Duplex fiber uses two fiber strands within a single cable to enable bidirectional communication. One strand functions as the "receiving" strand, while the other operates as the "transmitting" strand.

[Leo Laohoo]

Simplex = One strand of cable.  The cable is "sliced" by the optic to send in one side and receive in another.

Duplex = Two strand of wires.  One strand is transmit, another strand is recieve. 

[reccon]

You can have bidirectional communication over a single mode simplex cable. For this you need a special SFP that sends and receives on different wavelengths. This is often used for FTTH.

[Blue_Bird]

Hello 13jobsp90,

Yes, fiber optic cables can support both simplex and duplex transmissions;

Simplex: Designed to transmit data in one direction, Simplex cables are often less expensive than duplex cables, and are easier to install and maintain. They are also resistant to interference.

Duplex: Designed to transmit data in two directions, Duplex cables are suitable for applications that require bidirectional communication, such as IT communication, LANs and WANs, and VoIP. However, they are more complex to install and maintain, and are more susceptible to interference.

Both simplex and duplex cables can be single-mode or multimode. Single-mode cables are often better for long distance applications, while multimode cables are better for shorter distances. The choice between simplex and duplex cables depends on the specific needs of the application.

Best regards
******* If This Helps, Please Rate *******