The types of optical cables commonly used in network engineering and monitoring engineering are: GYXTW central bundle tube (2- 12 core), GYSTS and GYSTS stranded optical cables (2- 144 core), GYTY53 twisted optical cable, GYFTY nonmetallic optical cable, GJFJV indoor optical cable, GYXTZW and GYSTZS flame-retardant optical cable; Accessories include: optical fiber jumpers, pigtails (FC, SC, ST, LC, MTRJ), couplers, junction boxes, and optical fiber transceivers (10/100/1000m adaptive, pure Gigabit).
Compilation method of optical cable model
type
This pattern consists of five parts, each part is represented by a code name, as shown in the figure below. Among them, structural features refer to the structural features derived from cable core structure and optical cable.
Ⅰ Ⅱ Ⅲ Ⅳ Ⅴ
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First, the classification code
Gy- communication outdoor optical cable (field)
Second, strengthen the component code
Reinforcing member refers to the member that enlarges or embeds the sheath inside to enhance the tensile strength of optical cable. If there are both metal and nonmetal reinforcing members, they are only expressed as structural features of metal members.
(Unsigned) —— Metal reinforcing member
F—— Non-metallic reinforcing member
Three, cable core and cable derivative structure characteristic code.
The structural characteristics of optical cable should indicate the main types of cable core and the derivative structure of optical cable. When it is necessary to pay attention to several structural features of optical cable types, it can be expressed by combination codes, which are arranged in the following order from top to bottom.
D- fiber ribbon structure
S- optical fiber loose sleeve coating structure
J-type optical fiber tight sleeve coating structure
(Unsigned) —— Layer-stranded structure
X cable center tube (covering) structure
T-shaped filling structure
C- self-supporting structure
Electron elliptical shape
Z- flame retardant structure
Fourth, the code of the sheath
Y- polyethylene sheath
V-PVC sheath
Aluminum-polyethylene bonded sheath (sheath for short)
Stainless steel-polyethylene bonded sheath (S sheath for short)
Steel wire W- steel-polyethylene bonded sheath (W sheath for short)
Five, the outer sheath code
When there is an outer protective layer, it can include part or all of the cushion layer, armor layer and outer covering layer, and its code name is represented by two groups of numbers (the cushion layer need not be represented). The first group represents the armor layer, which can be one or two digits, such as table1; The second group represents the outer cover or coat, which should be numbers.
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Composition of optical fiber specifications
Optical fiber specifications consist of optical fiber number and optical fiber category.
Optical fiber numbering code
It is expressed by the actual effective number of similar optical fibers in the optical cable.
Optical fiber category code
The category of optical fiber should be indicated by the classification code of optical fiber products, that is, capital A indicates multimode fiber, capital B indicates single-mode fiber, and then numbers and lowercase letters indicate different types of optical fiber. A jujube multimode fiber, see table 3.
Table 1 armor layer
code name
Armor layer
Unarmored layer
2
Winding double-layer steel strip
three
Single thin round steel wire
33
Double thin round steel wire
four
Single thick round steel wire
Forty-four
Double thick round steel wire
five
Corrugated steel strip
Table 2 Outer cover or coat
code name
An outer covering or coat.
1
Fiber cover
2
Pvc bushing
three
Polyethylene casing
four
Polyethylene sleeve covered with nylon sleeve
five
Polyethylene protective sleeve
Table 3 Multimode Optical Fiber
classification designation
characteristic
Core diameter (micron)
Cladding diameter (micron)
material
wing
Graded refractive index
50
125
silicon dioxide
White linen vestment
Graded refractive index
62.5
125
silicon dioxide
Alc
Graded refractive index
Eighty-five
125
silicon dioxide
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