Do the network cables split by the optical splitter have the same IP address

No, each network cable from a single optical splitter typically connects to a separate device, and each device receives its own unique IP address.

How Optical Splitters Work

A fiber optic splitter is a passive device that divides a single incoming optical signal into multiple output signals without altering the data itself . For example, a 1×32 splitter can take one fiber from the central office and split it into 32 fibers, each going to a different home or device . The splitter does not assign IP addresses; it only distributes the optical signal physically.

IP Address Assignment in PON Networks

In a Passive Optical Network (PON), each output fiber from the splitter is connected to an Optical Network Terminal (ONT) at the customer's location . Each ONT functions as a separate network endpoint and communicates with the Optical Line Terminal (OLT) at the central office. The OLT or the network's DHCP server assigns a unique IP address to each ONT, ensuring that each subscriber or device can be individually identified on the network .

Key Points

• Splitter is passive: It does not manage IP addresses or network traffic; it only splits the optical signal .
• Each output is independent: Each fiber from the splitter connects to a separate ONT or device, which receives its own IP address .
• Network management: The OLT or DHCP server handles IP assignment, so even if multiple fibers originate from the same splitter, each endpoint is uniquely addressed .
• Cascaded splitters: In networks with multiple splitting stages, each final output still connects to a separate ONT, each with its own IP .

Conclusion

While a single optical splitter shares the same physical input signal among multiple outputs, each output cable ultimately connects to a separate device that receives a unique IP address. The splitter itself does not determine IP addresses; it only enables multiple devices to share the same fiber infrastructure efficiently .