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ITU-T G.654 Singlemode Optical Fiber
Description:
ITU-T Recommend G.654 fiber is a cut-off shifted single-mode optical fiber especially used for high bandwidth long distance transmission.
The G. 654 fiber is a single mode optical fiber and cable which has the zero-dispersion wavelengths around 1300nm, the fiber with loss minimized and cut-off wavelength shifted at around 1550nm.
The fiber standard was firstly introduced in year 1988.
The ITU-T G.654 Fiber could be applied in higher bandwidht submarine systems, back haul system.
Specifications:
| Parameters | ITU-T G.654 A | ITU-T G.654 B | ITU-T G.654 C | ITU-T G.654 D | |
| Fiber Attribute | |||||
| Mode Field Diameter | Wavelenths | 1550nm | 1550nm | 1550nm | 1550nm |
| Core diameter | 9.5 ~ 10.5um | 9.5 ~ 13.0um | 9.5 ~ 10.5um | 11.5 ~ 15.0um | |
| Tolerance | ± 0.7um | ± 0.7um | ± 0.7um | ± 0.7um | |
| Cladding Diameter | Clad Diameter | 125um | 125um | 125um | 125um |
| Tolerance | ± 0.7um | ± 1um | ± 0.7um | ± 0.7um | |
| Clad Non-Circularity | maximum | ≤2.0 % | ≤2.0 % | ≤2.0 % | ≤2.0 % |
| Core/Clad Concentricity Error (Offset) | maximum | ≤ 0.8um | ≤ 0.8um | ≤ 0.8um | ≤ 0.8um |
| Cable Cutoff Wavelength (λcc) | maximum | ≤ 1530 nm | ≤ 1530 nm | ≤ 1530 nm | ≤ 1530 nm |
| Macrobend Attenuation | Radius | 30mm | 30mm | 30mm | 30mm |
| number of turns | 100 turns | 100 turns | 100 turns | 100 turns | |
| maximum at 1652nm | 0.5dB | 0.5dB | 0.5dB | 0.5dB | |
Application:
Construction:
