the difference between single-mode fiber optic cable and multimode

　　As we all know, there are many ways to distinguish fiber optic cable, including 1-288 cores, aerial fiber optic cables, direct buried fiber optic cables, pipe fiber optic cables, and indoor fiber optic cables and outdoor fiber optic cables.

　　What I will tell you today is a way of distinguishing based on optical propagation methods, which can be divided into single-mode and multi-mode. So what is the difference between the two? Let me tell you about it today.

　　There are obvious differences between single-mode fiber and multi-mode fiber in the following aspects:

　　Transmission distance: Due to its small core diameter and low transmission loss, single-mode fiber is suitable for long-distance transmission. In contrast, multimode fiber has a larger core diameter and higher transmission loss, so it is more suitable for short-distance transmission.

　　Transmission capacity: Single-mode optical fiber has only one propagation mode, so it can transmit higher frequency optical signals and has greater transmission capacity. Multimode optical fiber has multiple propagation modes and is affected by mode noise, so the transmission capacity is small.

　　Light source and connectors: Single-mode fiber usually uses lasers as the light source, and connectors are more expensive. Multimode fiber usually uses LED or VCSEL as the light source, and the connectors are relatively cheap.

　　Application fields: Due to the long transmission distance and large transmission capacity of single-mode optical fiber, it is widely used in long-distance communications, submarine optical cables and other fields. Multimode optical fiber has shorter transmission distance and lower cost, so it is widely used in short-distance communications, local area networks and other fields.

　　There are obvious differences between single-mode optical fiber and multi-mode optical fiber in terms of structure, transmission distance, transmission capacity, light source and connector, and application fields. When choosing which type of optical fiber to use, you need to make a choice based on specific application scenarios and needs.