Complete Introduction to Multimode and Singlemode Fiber

Fiber optics are the most basic and commonly used product in the field of communications.. Optical fiber can be divided into single-mode optical fiber and multimode optical fiber.. in a short sentence, single-mode optical fiber is suitable for long-distance communication transmission, while multimode optical fiber is suitable for short-distance communication transmission. Singlemode Optical Fiber When the geometric dimensions of the optical fiber (mainly the core diameter) are close to the wavelength of light, as a core diameter d1 in the range of 5～10µm, Fiber optics only allow one mode propagation (basic mode HE11), with all other higher modes completely dimmed. The optical fiber that transmits in this way is called single-mode optical fiber.. The transmission rate of single-mode optical fiber is 100M/s or 1G/s, with a transmission distance of more than 5km. Generally, Single-mode optical fiber is used for long-distance signal transmission. Its light source is a laser light source, with applicable wavelengths of 1310nm/1550nm. The wire color is generally yellow, and the connectors are mostly blue or green. Single-mode fiber and its mode Since it only has one mode...