Single-mode fiber is cheap

Single-mode fiber cable itself can be relatively inexpensive, but overall system costs, including transceivers and installation, are typically higher than multimode fiber.

Cable Cost

Single-mode fiber optic cables generally cost between $2.00 and $7.00 per foot for bulk cables, with variations for pre-terminated or armored options depending on construction and application requirements . While the cable may appear affordable, specialized features like plenum-rated or outdoor-rated designs can increase the price . In comparison, multimode fiber cables are usually 20–30% cheaper per meter than single-mode equivalents .

Equipment and Transceiver Costs

Although single-mode fiber cables are relatively inexpensive, the transceivers and optics required for single-mode networks are more costly than those for multimode fiber . Single-mode transceivers use precise laser sources at 1310nm or 1550nm, which are more expensive than the LED or VCSEL sources used in multimode systems . This higher equipment cost can offset the lower cable price, especially for short-distance links.

Performance and Long-Term Considerations

Single-mode fiber supports long-distance transmission (10–80 km depending on data rate) and higher bandwidth without modal dispersion, making it ideal for metro, campus, or inter-building networks . Over long distances, fewer repeaters or amplifiers are needed, which can reduce long-term operational costs despite higher initial equipment expenses . Multimode fiber, while cheaper for short runs (<300 m), may require additional hardware for longer distances, increasing total cost .

Summary

• Cable alone: Single-mode fiber is moderately priced but generally more expensive than multimode for short runs .
• System cost: Single-mode networks are more expensive overall due to higher transceiver and installation costs .
• Cost-effectiveness: Single-mode fiber becomes more economical for long-distance or future-proofed networks, where reduced repeaters and higher bandwidth offset initial equipment costs . In conclusion, while single-mode fiber cable itself is not prohibitively expensive, calling it "cheap" depends on the context: for short, low-cost installations, multimode may be cheaper, but for long-haul or high-performance networks, single-mode fiber can offer better value over time.