Rates of various types of single-mode fiber
Single-mode fiber can transmit data at speeds up to 10 Gbps over distances ranging from 10 km (OS1) to 40 km (OS2), with high bandwidth and minimal signal loss.
Key Specifications
Core and Mode: Single-mode fiber has a small core diameter of approximately 8–10 micrometers, allowing only a single light mode to propagate, which minimizes modal dispersion and maintains signal integrity over long distances . Data Rate and Bandwidth: Standard single-mode fibers support data rates up to 10 Gbps. The bandwidth depends on the fiber type:
- OS1: Bandwidth of 200 MHz·km at 1310 nm, suitable for distances up to 10 km without amplification .
- OS2: Bandwidth of 500 MHz·km at 1310 nm, supporting distances up to 40 km without repeaters . Attenuation: Signal loss is very low:
- OS1: Maximum attenuation of 0.4 dB/km at 1310 nm and 0.3 dB/km at 1550 nm.
- OS2: Maximum attenuation of 0.3 dB/km at 1320–1550 nm . Wavelengths: Single-mode fiber typically operates at 1310 nm and 1550 nm, which are standard telecom windows for long-distance transmission . Applications: Single-mode fiber is ideal for telecom backbones, inter-building links, data center interconnects, and long-haul networks, including submarine cables. Its low dispersion and high bandwidth make it suitable for Dense Wavelength Division Multiplexing (DWDM) systems and future 5G fronthaul deployments . Summary: Single-mode fiber provides high-speed, long-distance data transmission with minimal signal degradation. OS1 is suitable for shorter distances (up to 10 km), while OS2 supports longer spans (up to 40 km), both capable of 10 Gbps transmission, making them the backbone of modern high-speed networks .
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