Shulou(Shulou.com)06/01 Report--

The tail consists of an optical fiber connector and a section of optical cable. only one end of the tail has an optical fiber connector, while the other end is the broken end of the fiber core of the optical cable, which is used to connect optical fiber transceivers or optical fiber equipment. In this paper, Yi Tianguang Communication will tell you about the classification, characteristics, applications and matters needing attention of optical fiber tail fiber.

I. Overview of tail fiber

The tail fiber is also known as bare optical fiber. One end of the tail fiber has an optical fiber connector, and the other end is the broken end of the fiber core of the optical cable. The end of the optical fiber connector is used to connect the equipment, and the broken end of the optical cable core is fused with other optical cable core breakers to achieve minimum insertion loss. The structure of the tail fiber and the jumper are very similar. To put it simply, the jumper is cut from the middle to be two tail fibers. Tail fiber has a variety of connectors, ordinary tail fiber diameter is usually 0.9mm, and installed in the ODF device.

II. Classification of tail fibers

The main types of tail fibers are single-core tail fiber, double-core tail fiber, 4-core tail fiber, 12-core bundle tail fiber, 12-color bundle tail fiber, SC bundle tail fiber, FC bundle tail fiber, LC bundle tail fiber and ST bundle tail fiber. ETU-LINK provides a variety of types of tail fiber to choose from: multimode (OM1, OM2, OM3) and single mode (OS2) according to fiber mode; single fiber, double fiber and multiple fibers according to the number of fibers; and PC, UPC and APC according to the grinding and polishing type of connectors. The tail fiber has an external sheath to protect the tight buffer layer cable from damage. The outer sheath can be easily stripped when space permits, so that the tail fiber has a tighter bending radius and occupies less space.

III. Characteristics of optical fiber tail fiber products

1. Insertion loss of ≤ 0.2dB

two。 Return loss: PC/UPC > 35dB APC > 60dB

3. Operating temperature:-40 ℃ 55 ℃

4. 0.9mm 、 2.0mm 、 3.0mm

Tail fiber is divided into single-mode tail fiber and multi-mode tail fiber, which can be distinguished by color, wavelength and transmission distance. The outer sheath of multimode tail fiber is orange OM1/OM2 and lake blue OM3, the wavelength of multimode tail fiber is 850nm and the transmission distance is 500m, which is used for short distance connection, while the outer jacket color of single mode tail fiber is yellow, the wavelength is 1310nm or 1550nm, and its transmission distance is long, up to 10km or 40km.

Third, the application of tail fiber

1. Optical fiber communication system

two。 Optical fiber access network

3. Optical fiber data transmission equipment

4. Optical fiber CATV

5. Local area network (LAN)

6. Testing equipment

7. Optical fiber sensor

8. Serial server

Matters needing attention in the use of tail fiber

1. The tail fiber is used to avoid winding as much as possible, which can reduce the attenuation of the optical signal in the process of transmission.

two。 The optical module connected by the tail fiber must match the tail fiber, the short-wave optical module must be connected to the multi-mode tail fiber, and the long-wave optical module must be connected to the single-mode jumper, so as to ensure the accuracy of data transmission.

3. The connector of the tail fiber should be kept clean, and the connector should be protected and encapsulated with a protective sleeve after use to prevent oil, dust and mechanical damage.

4. Before use, the tail fiber ceramic core insert and the end face skimmed cotton should be dipped in alcohol to wipe clean.

5. When the tail fiber is damaged by man-made or other factors, the damaged jumper should be replaced in time.

The optical fiber tail has the advantages of low insertion loss, high echo loss, good interchangeability and repeated unplugging, and is very convenient to use. In general, multi-mode tail fiber is suitable for short-distance connection, while single-mode tail fiber is suitable for long-distance connection.

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