What is the Method of Fiber Optic Cable Model Named?

Category code

GY communication room (wild) outside the optical cable

GS communications equipment within the cable

GH communications submarine cable

GT communication with special cable

GJ communication room (Bureau) within the cable

GW communications without metal cable

GR communication cable

GM communication with mobile optical cable

Note: Between Part 1 and Part 2: Code for Reinforcements (Reinforcing Cores) Reinforcing elements refer to the elements used to enhance the tensile strength of a cable within or by the sheath:

Unsigned - metal stiffeners;

G-metal heavy reinforcement

F-non-metallic reinforcement member;

H-non-metallic heavy-duty reinforcement

(For example: GYTA: metal reinforced member; GYFTA: non-metallic reinforced member)

Cable core and fiber optic cable filled with structural features of the code-named structural characteristics of the cable should be shown that the main type of cable and cable derived structure, when the cable type has several structural features that need to be marked, the combined code can be expressed.

B flat shape

C self-supporting structure

D fiber ribbon structure

E oval shape

G skeleton slot structure

J fiber tight sleeve coating structure

T grease filled structure

R inflatable structure

X Cable tube (coated)

Structure Z flame retardant

Sheath code

A Aluminum - Polyethylene bonded jacket

G steel sheath

L aluminum sheath

Q lead jacket

S steel - polyethylene adhesive protection of the magnetic

U polyurethane sheath

V PVC sheath Y Polyethylene sheath

W Steel-polyethylene bonded jacket with parallel wires

Note: between the fourth part and the fifth part: the code is expressed in two sets of numbers, the first group represents the armor layer, which can be one or two digits; the second group represents the coating layer and is a digital armor Loading codenamed armor layer

5 wrinkle strip

44 pairs of rough round steel wire

4 single rough round wire

33 double thin round wire

3 single round wire

2 double wrapped double steel

0 no armor layer

Coating Code Name Coating or coat code

1 fiber outer cover

2 polyethylene protection tube

3 polyethylene sleeve

4 polyethylene cover plus nylon cover

5 PVC sleeve

Optical cable specifications

A multimode fiber

B single-mode fiber

B1.1 (B1) Non-dispersion displacement type fiber G652

B1.2 Cutoff wavelength displacement fiber G654

B2 dispersion displacement cable G653

B4 non-zero dispersion shifted fiber G655

Note: Multimode fiber can not be transported over long distances due to dispersion between modes and is almost eliminated.