What do you think about the fiber specification? Fiber optic cable models and specifications

The optical fiber consists of a core and a cladding, which are equivalent to two cylinders set together, with the number on the left being the core diameter and the number on the right being the cladding diameter.

Such as: core, 125um outer fiber core, 125um outer packaging.

Single-mode vs. multi-mode.

In the theory of optical fiber communication, optical fiber is divided into single-mode and multi-mode, and the difference is as follows:

1.Single-mode fiber has a small core diameter (about 10mm), only allows one mode transmission, has small dispersion, works at long wavelengths (1310nm and 1550nm), and is relatively difficult to couple with optical devices.

2.Multimode fiber has a large core diameter (m or 50mm), allows hundreds of modes to transmit, has large dispersion, and works at 850nm or 1310nm. Coupling with optical devices is relatively easy.

For optical end modules, strictly speaking, there is no distinction between single-mode and multi-mode. The so-called single-mode and multi-mode modules refer to the optical components used in the optical terminal module and what kind of optical fiber can be used to obtain the best transmission characteristics.

In general, there are the following differences:

1.Single-mode modules generally use LD or LEDs with narrow spectral lines as the light source, and the size of the coupling parts is well matched with the single-mode fiber, and it can transmit long distances when using single-mode fiber transmission.

2.Multi-mode modules generally use ** low LED as the light source, and the size of the coupling parts is well matched with the multi-mode fiber.

Let's take a look at the structure of the fiber.

There are three layers: core, cladding, and coating.

The single-mode fiber core is 9um, and the multi-mode fiber core is 50

The cladding layer is 125um, the single-layer coating layer is 250um, and the double-layer coating is 450um<>

Shanghai State Road Communication Technology ****, hope, thank you!

Fiber Optic Cable Model:GY Outdoor Fiber Optic Cables for Communications, Mobile Fiber Optic Cables for GM Communications, Indoor Fiber Optic Cables for GJ Communications, Indoor Fiber Optic Cables for GS Communications, Submarine Fiber Optic Cables for GH Communications, Special Optical Cables for GT Communications, and Flexible Optical Cables for GR Communications.

Fiber Optic Cable Specifications:The specifications of optical fibers in optical cables are divided into single-mode and multi-mode. Single-mode optical cable and multi-mode optical cable can also be divided into 2-core optical cable, 4-core optical cable, 6-core optical cable, 8-core optical cable, 12-core optical cable, 24-core optical cable, 36-core optical cable, 48-core optical cable, 56-core optical cable, 72-core optical cable, 96-core optical cable, 144-core optical cable, etc.

Characteristics of optical cable: Optical cable is characterized by good mechanical and environmental performance, flame retardant (or non-flame retardant) performance to meet the requirements of relevant standards, and the mechanical and physical properties of sheath jujube reed to meet the requirements of relevant standards, soft, flexible, easy to excavate, and support large-capacity data transmission, to meet the various requirements of the market and users. The main stool loose belt is used for the introduction cable of the building, indoor wiring, and the cable is directly used by the end user.

How to identify the model of the optical cable? Kiss! Hello, I am glad to answer for you<> the model identification method of the pro-optical cable is as follows:

The first part indicates the classification model of the fiber. The code between the points and the second part indicates the reinforcement (reinforcing core). The sub-indicates the structural feature code.

The structural characteristics of the optical cable should indicate the main type of cable core and the derived structure of the optical cable, and when the optical cable type has several structural characteristics that need to be indicated, it can be indicated by the combination code. It represents the sheath code. The five parts consist of two sets of numbers, the first group represents the armor layer, which can be one or two digits; The second group represents the coating, which is a number.

The code name of the armor layer. Example: Classification code GY Optical cable for communication room (field) GS communication equipment internal optical cable GH submarine optical cable for communication GT special optical cable for communication GJ communication indoor (office) optical cable GW metal-free optical cable for communication GR flexible optical cable for communication Mobile optical cable for GM communication Note:

Between the first part and the second part: the code name of the reinforcing member (reinforcing core) refers to the reinforcing member used to enhance the tensile strength of the optical cable within the sheath or embedded in the sheath: unsigned - metal reinforcing member; g-metal heavy reinforcing member, f-non-metallic reinforcing member; h-Non-metallic heavy reinforcing members (e.g

GYTA: metal reinforcing core; GYFTA: non-metallic reinforcing core) The code of the cable core and the structural features of the fiber optic cable should indicate the main type of cable core and the derived structure of the optical cable, and when the type of optical cable has several structural features that need to be indicated, it can be represented by the combination code.

The code of the sheath A Aluminum-polyethylene bonded sheath g Steel sheath l Aluminium sheath q Lead sheath S Steel-polyethylene bonded magnetic protection u Polyurethane sheath v PVC sheath y Polyethylene sheath w Steel-polyethylene bonded sheath with parallel steel wire Note: Between Part 4 and Part V: its code is indicated by 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, which is a digital armor layer code Code Armor layer 5 Wrinkled steel strip 44 Double thick round steel wire 4 Single thick round steel wire 33 Double thin round steel wire 3 Single thin round steel wire 2 Wrapped double steel belt 0 No armor layer Coating code Code Coating layer or jacket code 1 Fiber coat 2 Polyethylene protective pipe 3 Polyethylene sleeve 4 Polyethylene sleeve with nylon sleeve 5 Polyvinyl chloride sleeve Part 6:

Optical cable specifications and model A Multimode fiber B Single-mode fiber Non-dispersion displacement optical fiber G652 Cut-off wavelength displacement optical fiber G654 B2 Dispersion displacement optical cable G653 B4 Non-zero dispersion displacement optical fiber G655 Note: Multimode optical fiber cannot carry out long-distance optical transmission due to inter-mode dispersion, and is almost eliminated. Hope mine can help you <>

Do you have any other questions?

The models and specifications of optical fiber lines are as follows:

Optical cable models include outdoor optical cable for GY communication, mobile optical cable for GM communication, indoor optical cable for GJ communication, optical cable for equipment for GS communication, submarine optical cable for GH communication, special optical cable for GT communication, and soft inspection and monitoring optical cable for GG communication.

Optical cable specifications are divided into single-mode and multi-mode optical fiber specifications in the optical cable, single-mode optical cable and multi-mode optical cable can also be divided into 2-core optical cable, 4-core optical cable, 6-core optical cable, 8-core optical cable, 12-core optical cable, 24-core optical cable, 36-core optical cable, 48-core optical cable, 56-core optical cable, 72-core optical cable, 96-core optical cable, 144-core optical cable, etc.

Fiber optic cable: Fiber optic cable is a communication cable that consists of two or more glass or plastic fiber cores. These fiber cores are located within a protective cladding and are covered by a plastic PVC outer sleeve, and signal transmission along the inner fiber is typically infrared.

Optical fiber communication is one of the important ways of modern information transmission, which has the advantages of large capacity, long relay distance, good confidentiality, no electromagnetic interference and copper saving. <>