Home / Fiber Optic / Fiber Optic Patch Cord - Shenzhen Welink Technology Co., LTD

Fiber Optic Patch Cord - Shenzhen Welink Technology Co., LTD

Shenzhen Welink Technology Co,.LTD. is a high-tech enterprise founded in 2014, mainly serving fiber optic solutions for USA, UK, Canada & all over the world.

E2000 FC Fiber Optic Multimode Patch Cord

Capacity: Simplex/Duplex/Multiplex
Dimensions: Variable
Material: Plastic
Design Style: Standard
Adapter Type: E2000
Applications: Fiber Transmission
No.of Cable Entries & Exits:N/A
Color: Yellow/Others
Key Feature: Fiber Accessories & Connectivity view less
view more

MTRJ Fiber Optic Cable Patch Cord

Capacity: Simplex/Duplex/Multiplex
Dimensions: Variable
Material: Plastic
Design Style: Standard
Adapter Type: MTRJ
Applications: Fiber Transmission
No.of Cable Entries & Exits:N/A
Color: Yellow/Others
Key Feature: Fiber Accessories & Connectivity view less
view more

MU Patch Cord Fiber Optic

Capacity: Simplex/Duplex/Multiplex
Dimensions: Variable
Material: Plastic
Design Style: Standard
Adapter Type: MU
Applications: Fiber Transmission
No.of Cable Entries & Exits:N/A
Color: Yellow/Others
Key Feature: Fiber Accessories & Connectivity view less
view more

ST Fiber Optic Multimode Patch Cord

Capacity: Simplex/Duplex/Multiplex
Dimensions: Variable
Material: Plastic
Design Style: Standard
Adapter Type: ST
Applications: Fiber Transmission
No.of Cable Entries & Exits:N/A
Color: Yellow/Others
Key Feature: Fiber Accessories & Connectivity view less
view more

Fiber Optic patch cords are used to make patch cords from equipment to optic fiber wiring links. There is a thick protective layer, which is generally used in the connection between the optic transceiver and the terminal box. It is used in optic fiber communication systems, optic fiber access networks, optic fiber data transmission, and local area networks.

1. Structure

Fiber Optic jumper (also known as optic fiber connector) means that both ends of the optic cable are equipped with connector plugs to achieve active connection of the optic path; one end with a plug is called pigtail. Optic fiber patch cord (Optic Fiber Patch Cord / Cable) is similar to coaxial cable, except that there is no mesh shield. At the center is the glass core for light propagation. In multimode fiber, the diameter of the core is 50μm ~ 65μm, which is roughly equivalent to the thickness of human hair. The diameter of single-mode fiber core is 8μm ~ 10μm. The outside of the core is surrounded by a glass envelope with a lower refractive index than the core to keep the optic fiber in the core. Outside is a thin layer of plastic jacket to protect the envelope. The classification and overview of fiber jumpers are as follows There are many types of fiber jumpers (also called fiber connectors), that is, fiber connectors that connect to optic modules. The SFP module is connected to the LC fiber connector, and the GBIC is connected to the SC fiber connector. The following is a detailed description of several commonly used fiber optic connectors in network engineering: ①FC type optic fiber jumper: the external reinforcement method is to use a metal sleeve, and the fastening method is a screw buckle. Generally used on the ODF side (most used on patch panels) ②SC optic fiber jumper: the connector of the GBIC optic module, its shell is rectangular, and the fastening method is the plug-in pin latch type, without rotating. (Most used on router switches) ③ST type optic fiber jumper: commonly used in optic fiber distribution frame, the shell is round, and the fastening method is screw buckle. (For 10Base-F connection, the connector is usually ST type. Commonly used in fiber distribution frame) ④LC fiber optic jumper: connector for connecting SFP module, it is made by the latch mechanism of modular jack (RJ) which is easy to operate. (Used by router) fiber optical patch cords factory

2. Main Parameters

 Connector Type ST SC FC
Multi mode Single Mode Multi mode Single Mode Multi mode Single Mode
Insertion Loss ≤0.2dB ≤0.2dB ≤0.2dB ≤0.2dB ≤0.2dB ≤0.2dB
Return Loss PC≥45 dB PC≥45dB PC≥45dB PC≥45dB PC≥45 dB PC≥45 dB
UPC≥50dB UPC≥50dB UPC≥50dB UPC≥50dB UPC≥50 dB
Repeatability ≤0.2dB ≤0.2dB ≤0.2dB ≤0.2dB ≤0.2dB ≤0.2dB
Interchangeability ≤0.2dB ≤0.2dB ≤0.2dB ≤0.2dB ≤0.2dB ≤0.2dB
Temperature -40ºC~85 ºC
 Connector Type MT-RJ LC
Multi mode Single Mode Multi mode Single Mode
Insertion Loss ≤0.2dB ≤0.2dB ≤0.2dB ≤0.2dB
Return Loss PC≥45 dB PC≥45 dB PC≥45 dB PC≥45 dB
UPC≥50 dB UPC≥50 dB UPC≥50 dB UPC≥50 dB
APC≥65 dB APC≥65 dB APC≥65 dB APC≥65 dB
Repeatability ≤0.2dB ≤0.2dB ≤0.2dB ≤0.2dB
Interchangeability ≤0.2dB ≤0.2dB ≤0.2dB ≤0.2dB
Temperature -40ºC~85 ºC -40ºC~85 ºC -40ºC~85 ºC -40ºC~85 ºC

3. Types

Optic fiber jumpers can be divided into common single-mode and multi-mode optic fiber jumpers according to different transmission media, as well as other optic fiber jumpers that use plastic as the transmission medium; according to the structure of the connector, they can be divided into: FC Jumpers, SC jumpers, ST jumpers, LC jumpers, MTRJ jumpers, MPO jumpers, MU jumpers, SMA jumpers, FDDI jumpers, E2000 jumpers, DIN4 jumpers, D4 jumpers, etc. form. The more common fiber jumpers can also be divided into FC-FC, FC-SC, FC-LC, FC-ST, SC-SC, SC-ST, etc. Single-mode fiber (Single-mode Fiber): Generally, the fiber jumper is indicated by yellow, and the connector and protective sleeve are blue; the transmission distance is longer. Multi-mode fiber (Multi-mode Fiber): Generally, the fiber jumper is shown in orange, and some is shown in gray. The connectors and protective sleeves are beige or black; the transmission distance is short. fiber optical patch cords types

4. Features

  • 1. Low insertion loss;
  • 2. Good repeatability;
  • 3. Large return loss;
  • 4. Good inter-insertion performance;
  • 5. Good temperature stability;
  • 6. Strong tensile performance.

5. Application

Fiber optic jumper products are widely used in: communication equipment room, fiber to the home, local area network, fiber optic sensor, fiber optic communication system, fiber optic connection transmission equipment, defense combat readiness, etc. Suitable for cable television network, telecommunication network, computer optic fiber network and optic test equipment. The breakdown is mainly used in several aspects. 1. Optic fiber communication system 2. Optic fiber access network 3. Optic fiber data transmission 4. Optic fiber CATV 5. Local Area Network (LAN) 6. Test equipment 7. Fiber optic sensor

6. Attention

The transmit and receive wavelengths of the optic modules at both ends of the fiber jumper must be the same, that is to say, the two ends of the optic fiber must be optic modules of the same wavelength. The simple way to distinguish is that the color of the optic module must be the same. In general, short-wave optic modules use multi-mode optic fibers (orange optic fibers), and long-wave optic modules use single-mode optic fibers (yellow optic fibers) to ensure the accuracy of data transmission. Do not excessively bend or loop the fiber during use, as this will increase the attenuation of light during transmission. After using the fiber jumper, be sure to protect the fiber connector with a protective sleeve. Dust and oil will damage the coupling of the fiber. If the optic fiber connector is dirty, you can clean it with a cotton swab dipped in alcohol, otherwise it will affect the communication quality. 1. The ceramic ferrule and the end face of the fiber jumper must be wiped clean with alcohol and absorbent cotton before use. 2. The minimum bending radius of the optic fiber is not less than 150mm when used. 3. Protect the ferrule and the end surface of the ferrule to prevent bumps and pollution, and bring a dust cap in time after disassembly. 4. Do not look directly at the end of the fiber when the laser signal is transmitted. 5. Replace the damaged optic fiber jumper in time when it is damaged by man-made or other force majeure factors. 6. Read the instructions carefully before installation, and install and debug under the guidance of the manufacturer or distributor's engineers. 7. Abnormal situations in the optic fiber network or system can be tested one by one using the troubleshooting method. When testing or eliminating the jumper fault, you can do the continuity test first. You can usually use a visible laser pointer to judge the entire fiber link. Or further use a precision optic fiber insertion loss return loss instrument to test its indicators. If the indicator is within the qualified range, the jumper indicates normal, otherwise it is not qualified.

7. Selection Guide

There are three main types of fiber jumpers according to the termination type: ST-ST, SC-SC, ST-SC. According to the type of optic fiber, there are mainly two types of single-mode fiber and multi-mode fiber. The specifications of the jumper length are 0.5m, 1m, 2m, 3m, 5m, 10m, etc. According to the cable outer sheath material, it can be divided into ordinary type, ordinary flame retardant type, low smoke halogen free type (LZSH), low smoke halogen free flame retardant type, etc. According to the fire rating of the building and the fire resistance requirements of the materials, the integrated wiring system should take corresponding measures. When laying cables or optic cables in flammable areas and building shafts, flame retardant cables and optic cables should be used; in large public places, flame retardant, low smoke, and low toxicity cables or optic cables should be used; adjacent equipment rooms or junctions Flame retardant wiring equipment should be used.

8. Difference

  1. Single-mode modules generally use LEDs with narrow LD or narrow spectral lines as the light source. The size of the coupling part is well matched with single-mode fiber. When using single-mode fiber transmission, it can transmit a long distance 2. Multi-mode modules generally use lower-priced LEDs as the light source, and the size of the coupling component is well matched with the multi-mode fiber. Pigtails are also called pigtails. Only one end has a connector, and the other end is a broken end of an optic fiber core. It is connected to other optic fiber cores by fusion splicing. It often appears in the optic fiber terminal box and is used to connect the optic cable to the optic fiber transceiver Devices (couplers, jumpers, etc. are also used in between). The optic fiber connector is a device that can be detached (movably) connected between the optic fiber and the optic fiber. It is a precise butt joint of the two end surfaces of the optic fiber, so that the optic energy output by the transmitting fiber can be coupled to the receiving fiber to the maximum extent. And to minimize the impact on the system due to its involvement in the optic link, this is the basic requirement of fiber optic connectors. To a certain extent, fiber optic connectors also affect the reliability and performance of optic transmission systems.

9. Technical Parameter

Item Conditon Single Mold Multi Mode
 Optic Features Insertion Loss UPC SM:1310nm/1550nm MM:850nm/1300nm ≤0.2dB ≤0.3dB
APC 1310nm/1550nm ≤0.3dB
Return Loss UPC SM:1310nm/1550nm MM:850nm/1300nm ≥55 dB ≥35 dB
APC 1310nm/1550nm ≥65 dB
Mechanical characteristics (additional loss) Impact test 1.8高度,8次 <0.1 dB <0.1 dB
Vibration test 10-60Hz,1mm Full amplitude <0.1 dB <0.1 dB
Plug life 1000 times or more <0.1 dB <0.1 dB
Tensile strength >100N <0.1 dB <0.1 dB
Environmental characteristics High and low temperature cycle test -25℃~+70℃,2 Cycles <0.2 dB <0.2 dB
(Additional loss) High temperature test +80℃,2 Hours <0.2 dB <0.2 dB
Low temperature test -40℃,2 Hours <0.2 dB <0.2 dB
Damp heat test +40℃,90-95%RH,2 Hours <0.2 dB <0.2 dB
1. According to the connector, it can be divided into: FC, ST, SC, LC, MU, MPO, E2000, MTRJ, SMA, etc., the end contact method is PC, UPC, APC. 2. Optic fiber outer diameter Ф0.9mm, Ф2mm, Ф3mm, fiber core number: single core, double core, 4 cores, 6 cores, 8 cores, 12 cores or customer specified. 3. Fiber types can be divided into: G652B, G652D, G655, G657A1, G657A2, 50/125, 62.5 / 125, OM3 (50 / 125-150), OM4 (50 / 125-300), etc. 4. The color of the connector can be divided into: blue (commonly used for single-mode PC, UPC connectors), beige, gray (commonly used for multi-mode connectors), green (APC connector), aqua blue (OM3), and color of the tail sleeve Divided into: gray, blue, green, white, red, black, turquoise. 5. Length of connecting line: custom.

10. Polish Method

The “/” indicates the cross-section process of the optic fiber connector, that is, the grinding method. "PC" is the most widely used in telecommunication operators' equipment, and its joint section is flat. "SC" indicates that the pigtail connector type is SC connector. The SC connector is generally used for the optic interface on the transmission equipment side of the industry. The SC connector is made of engineering plastic, which has the advantages of high temperature resistance and is not easy to oxidize. It is a metal connector, but ODF will not have the problem of high temperature. At the same time, the metal connector can be inserted and removed more times than plastic, and the maintenance of ODF pigtails is more than that of optic fiber pigtails. Other common connector models are: ST, DIN, FDDI. "PC" refers to the cross-sectional process of optic fiber connectors, PC is the most common. It is the APC model that is mostly used in radio and television and early CATV. The pigtail uses an end face with an inclination angle (8 degrees). The slope is generally not visible, which can improve the quality of the TV signal. The main reason is that the TV signal is analog light modulation. The original path returns. Because the uneven refractive index distribution of the fiber will return to the coupling surface again, although the energy is small at this time, because the analog signal cannot completely eliminate the noise, it is equivalent to superimposing a weak signal with delay on the original clear signal. Represented on the screen is ghosting. The inclination of the pigtail headband prevents reflected light from returning along the original path. General Digital signals generally do not have this problem. There is also a "UPC" process, which has a smaller attenuation than PC. The flanges of equipment with special needs are generally FC / UPC. FC / UPC is used for fiber jumpers inside ODF racks of foreign manufacturers to improve the ODF equipment's own index.

11. How to test

How to detect whether the fiber jumper is qualified? Using an insertion loss instrument, first use a light pen to measure whether the jumper is clear or not. Make sure that the fiber is not broken. Measured indicators General carrier-grade indicators: insertion loss is less than 0.3dB and return loss is greater than 45dB. The performance testing of optic fiber jumpers is divided into: 1. Optic performance testing, including return loss / insertion loss test. The test instrument can use the FibKey 7602 return loss / insertion loss integrated tester. 2. End face geometry test, the test parameters include radius of curvature, apex offset, fiber height, etc. The test instrument is an interferometer. Many people use Norland AC / NC3000 or CC6000 for testing. In particular, CC6000 interferometers are used in more and more factories because of their superior cost performance. 3. Inspection of optic fiber end-face scratches, using video optic fiber magnifying glass to observe, for example, many factories use FibView FV-400PA for inspection. The instrument can give the clearest image and the operation is extremely simple. Some customers also use FibKey-5600 type variable magnification magnifier for testing. The instrument integrates 400 times, 200 times and 80 times magnification in one, which can clearly and conveniently observe the fiber end face and ferrule end face. Of course, you can also use the relevant software for automatic inspection. 4. Fiber tension test, you need to test the amount of tension the fiber connector can withstand. 5. Ambient temperature experiment, you need to test the performance index of the optic fiber connector under different ambient temperatures.

Languages / 语言

About Us

News Center

Contact Us

Languages / 语言

Connect With Us

Copyright © Welink All Rights Reserved