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Naming of Fiber Optic Cable
2017-01-13
Fiber Optic Cable

How were fiber optic cable named?

Fiber optic cable is commonly named with a group of several letters and numbers, such as GYXTW53. In the names of fiber optic cables, the letters or numbers stand for the codes of different components or concepts of optical cable. Generally speaking, names of optical cables consist of two parts, the model and specification of fiber optic cable. And the optical cable model and specification also respectively include several elements as below shown. 

Way of naming fiber optic cables

Introduction about rules of naming fiber optic cables

Ⅰ. Fiber optical cable category

Code

Category of optical cable

GY

outdoor communication cable

GJ

indoor cable

MG

coal mine cable

GS

Equipment communication cable

GH

Submarine communication cable

GT

Special communication cable

GW

Non-metal cable for communication

GR

Soft cable for communication

GM

Mobile cable for communication

Ⅱ. Strengthen components
Strengthen components refer to the components inside the protective cover which are used to strength the tensile resistance of fiber optical cable.

Code

Strengthen components

No code

Metallic reinforcement

F

Non-metallic reinforcing components

G

Heavy-duty metallic reinforcing components

H

Non-metallic heavy-duty reinforcing components

Examples: GYTA stands for metallic strengthen core; GYFTA stands for non-metallic strengthen core.

Ⅲ. Structural characteristics

Code

Structure

B

Flat shape

C8

8 font self-supporting structure

D

Fiber optic ribbon structure

E

Elliptical shape

G

Skeleton structure

J

Fiber optic sleeve coated structure

T

Ointment filled structure

R

Inflatable structure

X

Center tube structure

Z

Flame retardant structure

Ⅳ. Protective layer

Code

Protective layer

A

Aluminum - polyethylene bond coat

G

Steel sheath

L

Aluminum sheath

Q

Lead sheath

S

Steel - polyethylene adhesive sheath

U

Polyurethane jacket

V

PVC jacket

Y

Polyethylene sheath

W

Entrained steel wire - polyethylene adhesive layer

Ⅴ. Outer layer

Code

Outer layer

53

Corrugated steel tape longitudinal sheath armored polyethylene sheath

23

Wrapped steel tape armored PE sheath

33

Thin steel wire wrapped armored PE sheath

43

Coarse steel wire wrapped armored PE sheath

333

Double-layer thin steel wire wrapped armored PE sheath

Ⅵ. Types of optic fiber

Code

Types of fiber

A

Multiple mode fiber

B

Single mode fiber

B1.1（B1）

Non dispersion - shifted optical fiber G652

B1.2

Cut - off wavelength displacement optical fiber G654

B2

Dispersion displacement optical fiber cable G653

B4

Non-zero dispersion displacement fiber G655

Ⅶ. Amount of fiber core is shown by Arabic numerals. 
Example: four G.652 single-mode optical fibers are shown as 4B1.1 or 4B1.

Explanation of common fiber optic cables
GYXTW - metal reinforced components, the central tube filled, entrained steel wire - polyethylene adhesive jacket for outdoor communications cable, applicable to pipe and overhead laying.
GYXTW53 - Metal reinforcing member, center tube filled, stranded steel-polyethylene bonded sheath, longitudinal corrugated steel tape armored polyethylene sheath for outdoor communications cable, suitable for direct burial laying.
GYTA - metal reinforced components, loose-layer twisted-filled, aluminum-polyethylene adhesive jacket for outdoor communications cable, for overhead and pipe laying.

Conclusion

How many types of fiber optical cable there are, how many codes. Knowing the rules of naming fiber optic cables can help to improve the concepts of fiber optics and identify the differences between fiber optic cables that you have not ever known before, this article gives all the details about how to make you capable of doing these.
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