121: Type Designation Code For Fiber Optic Cables

Type designation codes (marking) of fiber-optic cables according to DIN VDE has a below structure with 14 sections. Each section indicates one of the cable specifications.

1-

• A - Outdoor cable
• J - Indoor cable
• AT - Outdoor cable, divisible
• U - Universal cable for outdoor and indoor use (also as A/J)

2-

• (ZS) - Metallic support element / strength member

3-

• V - Tight buffered fibre
• W - Loose tube with 1 fibre, filled
• D - Loose tube, filled
• E - Loose tube, flexible

4-

• S - Metallic core / pair / quad

5- Filling of the cable core

• F - Petrojelly
• OF - Special jelly
• Q - Swellable tapes

6- Cable sheath

• Y – PVC
• H - Flame retardant
• 2Y - PE
• 4Y - PA
• 11Y - PUR
• (L)2Y - Al-laminated sheath
• (SR)2Y - Corrugated steel tape armouring and PE- sheath
• (ZN)2Y - Non-metallic strength members and PE-sheath
• (ZN)(L)2Y - Non-metallic strength members and PE-sheath Al-laminated sheath
• (ZN)(SR)2Y - Non-metallic strength members, corrugated steel tape armouring and PE- sheath

7-

• ...x    Number of cores with a fiber in loose tube cables
• x...    Number of loose tubes x number of fibers per loose tube in loose tube cables

8- Type

• E - single-mode fiber
• G - Graded-index fibre

9-

• Ø    Fiber core diameter fiber in microns for multi-mode
• Ø    Field diameter in microns in single-mode fibers

10-

• Ø    Fiber cladding diameter in microns

11-

• Attenuation coefficient in dB / km

12-Wavelength

• B - 850nm
• F - 1300nm at G, 1310 e
• H - 1550nm

13-

• Bandwidth at G, dispersion coefficient in single-mode fibers

14-

• LG - Layering
• SZ - SZ stranding

Related standards

• VDE