Advantages of multimode fiber systems
Release time:
2024-06-19
1. Cost advantage:
In the international standards IEC 11801-1:2017 and TIA 568.0-E-2020, OM3, OM4 and OM5 are recommend used for multimode optical fibers used in integrated wiring systems, continuing the major categories of multimode optical fibers in earlier standards, and these optical fibers all belong to A1 category. The IEC 60793-2-10 standard describes in detail the geometric parameters (such as core, cladding and coating structure and size, etc.), mechanical properties (such as tensile strength, peel strength), transmission parameters (such as working wavelength, attenuation coefficient, full injection mode bandwidth, effective mode bandwidth, etc.) of various A1 multimode fibers.
Because of the characteristics of high attenuation coefficient and high dispersion, multimode optical fiber system restricts its communication distance, which is common in short-distance optical fiber communication system. However, single-mode optical fibers mostly use solid-state laser diodes as light sources, while multi-mode optical fibers mostly use LEDs as light sources. Therefore, the cost of multi-mode optical fiber transceiver devices is much better than that of single-mode transceiver devices.
Single-mode fiber systems are also more expensive to install and maintain than multimode fiber systems. Unlike the small core outer diameter of single-mode fiber, the installation and connection of the entire multimode fiber system will not be particularly difficult, and there is no need to match higher-precision equipment and more professional technical operators (higher labor installation costs).
All in all, from the overall system cost, multimode fiber system has a better cost advantage (such as local area network, especially data center).
2. Bandwidth advantage: The upgrade of multimode optical fiber is mainly to improve the bandwidth parameters of optical fiber and support multimode multi-band applications (A1-OM5 type). For example, A1-OM3 type optical fiber meets the effective mode bandwidth of 2000 MHz · km in 850 nm band; The effective mode bandwidth of upgrading to A1-OM4 type optical fiber in 850 nm band is required to reach more than 4700 MHz · km.
A1-OM5 multimode fiber is also called "wideband multimode fiber (WBMMF)", except that the effective mode bandwidth reaches 4700 MHz · km in the 850 nm band, and the effective mode bandwidth reaches 2470 MHz · km in the 953 nm band. Up to now, the type of optical fiber, A1-OM5 fiber is the best optical fiber solution for short wavelength division multiplexing (SWDM) application technology. It is backward compatible with class A1-OM3 and class A1-OM4 multimode fibers, and has better bandwidth performance in the operating band specified by SWDM.
Higher bandwidth means "more data transmission can be supported". This "large bandwidth" attribute makes multimode fiber systems the first choice for applications requiring high bandwidth, such as video conferencing, large data transmission, and network backup.
3. Anti-interference advantages: The coupling efficiency between the light source and the receiver of the multimode optical fiber system is higher, and the multimode optical fiber system has strong resistance to external interference, and can better resist temperature changes, humidity changes, electromagnetic interference, etc. Therefore, the signal quality is better, the bit error rate is lower, and it is suitable for use in a strong interference environment.
4. Installation and maintenance advantages: The installation and maintenance of multi-mode fiber system is much simpler than that of single-mode fiber system. Due to its larger physical size, it is easier to mate with connectors and other optical components. In addition, the commissioning of multimode fiber systems is also simpler and does not require complex alignment systems.
5. Upgrade advantages: Multimode fiber systems have good flexibility and scalability, and can be easily upgraded and expanded to meet changing application requirements.
In summary, multimode fiber systems have higher bandwidth, better cost advantages, and simpler installation and maintenance than single-mode fiber systems. In addition, the multimode optical fiber system also has strong anti-interference, and has the advantages of more convenient and flexible upgrade and expansion. In many application scenarios, choosing a multimode fiber system will lead to better performance and higher efficiency. However, for specific application requirements, single-mode fiber systems may also be a better choice. The final selection should be based on actual application requirements and technical considerations.
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