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G.655

G.655
StatusIn force
Year started1996
Latest version(11/09)
November 2009
OrganizationITU-T
CommitteeStudy Group 15
Related standardsG.651.1, G.652, G.657
Domaintelecommunication
LicenseFreely available
Websitehttps://www.itu.int/rec/T-REC-G.655

G.655 is an international standard that describes the geometrical, mechanical, and transmission attributes of a single-mode optical fibre and cable, developed by the Standardization Sector of the International Telecommunication Union (ITU-T) that specifies one of the most popular types of single-mode optical fiber (SMF) cable.[1]

Standard

The standard specifies the geometrical, mechanical, and transmission attributes of a single-mode optical fibre as well as its cable. The range of mode field diameter permitted in G.655 is 8 to 11 μm in non-zero dispersion-shifted fibre (NZ-DSF). G.655.C fibre has a maximum PMD link design value of 0.20 ps/sqrtkm, which is the lowest value recommended by ITU-T. G.655 has the cable cut-off wavelength and cable attenuation coefficients in the C and L bands.[2]

Large effective area fiber (LEAF) optical fiber is an example of G.655 commonly called NZ-DSF.[3]

ITU-T Recommendation G.655

References

  1. ^ "ITU Standard Gives Operators Brighter Future Latest Recommendation Lights Up More Optical Fibre". International Telecommunication Union. 30 April 2004. Archived from the original on 2021-04-10. Retrieved 2021-04-10.
  2. ^ "G.655: Characteristics of a non-zero dispersion-shifted single-mode optical fibre and cable". www.itu.int. Archived from the original on 2021-04-10. Retrieved 2021-04-10.
  3. ^ "LEAF Optical Fiber | Non-zero Dispersion-shifted Fiber (NZDSF) | Corning". www.corning.com. Archived from the original on 2024-11-16. Retrieved 2026-01-20.

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