G652D single-mode optical fiber

I. Definition and basic structure of G652D single-mode optical fiber

G652D fiber is a single-mode fiber, belongs to ITU - TG.652D fiber, is currently widely used in long-distance communication systems in a kind of optical fiber. Its central glass core is very thin (core diameter is generally 9 or 10 μm), and can only transmit one mode of fiber, so the intermode dispersion is very small, and it is suitable for long-distance communication.1 The refractive index distribution is similar to that of mutant optical fibers, and the core diameter is only 8-10 μm, and the light propagates in a straight line shape along the direction of the central axis of the core.1 The fiber is a single-mode fiber, which belongs to the ITU-TG.652D fiber.

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Second, the performance characteristics of G652D single mode fiber

? Low loss: with low transmission loss, it can provide stable signal transmission in long-distance communication, and the loss is more uniform in the communication wavelength range, which helps to maintain signal stability3.

? Large bandwidth: with a large bandwidth, it is able to transmit more data volume, which can meet the needs of high-speed data transmission such as high-definition video, cloud computing and other needs3.

? Low dispersion: better dispersion control can reduce the dispersion effect during signal transmission and improve signal quality and transmission distance. It not only has a small intermodal dispersion, but also has a positive and a negative material dispersion and waveguide dispersion of equal size at 1.31μm wavelength, which effectively reduces the total dispersion13.

? High Strength: With high tensile strength and bending resistance, it can maintain good performance in harsh environments and is suitable for both indoor and outdoor applications3.

Third, the application of G652D single-mode fiber

? Long-distance communication: due to its low loss, low dispersion and other characteristics, it is suitable for long-distance signal transmission, and plays an important role in the long-distance communication system in the modern communication field, such as in the 100Mbps Ethernet to 1G Gigabit network, the single-mode optical fiber can support more than 5,000m transmission distance13.

? various outdoor environments: it is applied in various outdoor environments, for example, G652D single-mode fiber is used in OPGW power aerial cable (24-core single-mode fiber optic cable), which is suitable for outdoor environments such as aerial and power tower, and it can also be used in fiber optic cables suitable for direct burial, pipeline and rack and other outdoor environments, such as GYTS (laminated armored fiber optic cables) and GYTA (laminated armored center loose-sleeved fiber optic cables). It can also be used in GYTS (laminated armored fiber optic cable), GYTA (laminated armored center loose-sleeved fiber optic cable) and other cables suitable for direct burial, pipeline and outdoor environment such as rack 35.

Fourth, the relationship between G652D single-mode optical fiber and other G652 level optical fiber

The properties of G.652D are basically the same as those of G.652B optical fiber, while the attenuation coefficient is the same as that of G.652C optical fiber, i.e. the system can work in the 1360-1530nm band.G652.D is the most stringent and fully backward compatible among all the G652 grades, and there is no difference between the structure and that of the ordinary G652 optical fiber, and it is the most advanced nondispersion-shifted optical fiber for metropolitan area networks at present. Fiber 4.