As one of the most basic components of optical network wiring, optical fiber jumper is widely used in the construction of optical fiber link. Nowadays, optical fiber manufacturers introduce many types of optical fiber jumpers according to different application scenarios, such as MPO / LC / SC / FC / St optical fiber jumpers, simplex / duplex optical fiber jumpers, single-mode / multimode optical fiber jumpers, etc., which have their own characteristics and can not be replaced. This article will give you a detailed introduction to the common different types of optical fiber jumpers for easy selection and wiring.
By fiber connector type
According to different optical fiber connectors, optical fiber jumpers can be classified as MPO / MTP / LC / SC / FC / St / MTRJ / mu / E2000 / DIN optical fiber jumpers. Although these different types of optical fiber jumpers have similar components (composed of connectors and optical cables) and the same functions, there are differences in application scenarios due to their different characteristics and performance.
LC optical fiber jumper
LC optical fiber jumper is one of the most commonly used optical fiber jumpers in optical network. Because it adopts LC connector with a diameter of 1.25mm, it is very suitable for high-density wiring, so it is widely used in computer room and data center. Nowadays, in order to meet the high-density and high-performance requirements of the data center, many suppliers have introduced LC optical fiber jumpers with better performance, such as ultra-low insertion loss LC optical fiber jumpers, one tube dual core LC optical fiber jumpers, etc.
Ultra low insertion loss LC optical fiber jumper: compared with the conventional LC optical fiber jumper (insertion loss is generally 0.75db), the ultra-low insertion loss LC optical fiber jumper adopts ll technology, and the insertion loss can be as low as 0.12db, which is more suitable for long-distance transmission.
One tube dual core LC optical fiber jumper: one tube dual core LC optical fiber jumper adopts specially designed LC uniboot connector to allow bidirectional transmission of optical signals in a single optical fiber, which can provide more possibilities for high-density wiring. Compared with the standard LC optical fiber jumper, it can effectively improve the space utilization by 50%, not only save time and cost, but also make the wiring more convenient, especially suitable for places with limited space.
In addition, in order to save wiring space, a short tailed LC optical fiber jumper has been launched by Feifei (FS) recently. Compared with ordinary LC optical fiber jumper, the short tail sleeve LC optical fiber jumper adopts 12mm short tail sleeve design, and the connector length is shortened by 30%, making the wiring more flexible. It is very suitable for narrow environments and can meet the high-density cabling requirements of MDA (main distribution area) and EDA (equipment distribution area). When space is limited, short tailed LC fiber jumper is a good choice.
SC optical fiber jumper
SC optical fiber jumper adopts SC connector with 2.5mm diameter ferrule, which is twice the size of LC connector, so it is also called large square head connector (large square head optical fiber jumper). The optical fiber jumper adopts push-pull structure, plug and play, and has excellent performance. It is very suitable for telecommunications and data network systems, including point-to-point passive optical networks.
MPO / MTP optical fiber jumper
MPO / MTP optical fiber jumper is one of the common optical fiber jumpers in high-speed data communication system, such as 40g / 100g direct connection and interconnection. MPO / MTP optical fiber jumper is an optical fiber jumper with multi-core optical fiber connector, which can accommodate 6 ~ 144 optical fibers. It is the largest optical fiber jumper at present. MPO / MTP optical fiber jumper is composed of optical fiber, sheath, coupling assembly, metal ring, pin (pin pin), dust cap, etc. among them, it is divided into polarity A / polarity B / polarity C male / female optical fiber jumper due to its different number of optical fiber cores, arrangement positions and pins. Due to different types, the applicable applications are also different, Therefore, it is necessary to select the appropriate MPO / MTP optical fiber jumper according to the actual link conditions. If you want to know more about MPO / MTP connector, you can visit the first article to teach you a comprehensive understanding of MTP ® Connector.
FC optical fiber jumper
FC optical fiber jumper is the first optical fiber jumper using ceramic plug-in connector. Different from LC optical fiber jumper and SC optical fiber jumper, its connector is a circular spiral connector made of nickel plated or stainless steel, which needs to be fixed to the adapter or jack with threaded clip. Although the installation of FC optical fiber jumper is complex, it is still a common optical fiber jumper for connecting optical time domain reflectometer. At first, FC optical fiber jumper was also used in telecommunications and data network systems, but with the introduction of LC optical fiber jumper and SC optical fiber jumper, it gradually withdrew from the market.
St optical fiber jumper
St optical fiber jumper is an optical fiber jumper developed and manufactured by at & T after FC optical fiber jumper. St optical fiber jumper adopts bayonet connector with spring-loaded ceramic ferrule (diameter 2.5mm), with insertion loss of about 0.25dB. It can be used for long-distance and short-distance applications, such as campus network, enterprise network and military applications. However, in recent years, the market share of St optical fiber jumper and FC optical fiber jumper is gradually declining.
LC / SC / MTP / St / FC fiber optic patch cord
The five most common optical fiber jumpers mentioned above have different connectors and popularity. The following describes four types of optical fiber jumpers that are less used in today's optical networks.
MTRJ optical fiber jumper - the connector of MTRJ optical fiber jumper is made of precision plastic. Due to different pins, it is divided into male and female heads.
Mu optical fiber jumper - Mu optical fiber jumper is similar to SC optical fiber jumper. It adopts a 1.25mm diameter sleeve and a connector with self retaining mechanism. It has a compact structure and is suitable for high-density installation. It can be used in DWDM Network.
Din optical fiber jumper - although the structural dimensions of the connector pin and coupling sleeve of DIN optical fiber jumper are the same as those of FC optical fiber jumper, the internal metal structure of its connector is equipped with a spring to control pressure, which has more complex structure and higher mechanical accuracy, so the loss is small.
E2000 optical fiber jumper - the connector of E2000 optical fiber jumper adopts push-pull connection mechanism. The connector is equipped with automatic metal gate and laser beam protection device. One piece design can quickly realize terminal connection.
Divided by composition
Optical fiber jumper can be divided into ribbon optical fiber jumper and bundle optical fiber jumper according to different composition structures. The ribbon optical fiber jumper uses the ribbon optical cable composed of optical fiber ribbon, mostly in flat shape. Due to its high optical fiber density, it can accommodate more fiber cores, which greatly saves the wiring cost and space. The bundle optical fiber jumper uses the bundle optical cable, which is usually composed of 0.9mm loose sleeve or loose sleeve fiber, mostly in circular shape, and is mainly used for indoor generic cabling. Learn more about ribbon fiber jumpers and bundle fiber jumpers: what is the difference between ribbon fiber jumpers and bundle fiber jumpers.
By application environment
According to different application environments, optical fiber jumpers are divided into conventional optical fiber jumpers and reinforced optical fiber jumpers. The characteristics of conventional optical fiber jumper are relatively light and low cost, which can meet the use of most indoor transmission equipment and the high-density wiring needs of data center. Therefore, conventional optical fiber jumper is also widely used in daily life. Reinforced optical fiber jumpers are generally used in harsh outdoor environments such as underground passages and base station construction. Therefore, they usually need to have the abilities of insect and mouse bite prevention, waterproof and high temperature resistance to avoid damage and affect normal communication. In order to cope with the harsh environment, different types of reinforced optical fiber jumpers have been designed and developed according to the use scenarios, such as armored optical fiber jumpers, military field optical fiber jumpers, IP67 waterproof optical fiber jumpers and ftta pull-out jumpers.
By sheath type
PVC and LSZH are commonly used sheath materials for optical fiber jumpers. PVC optical fiber jumper is flexible and flexible when installed at normal temperature. It is usually used indoors, such as the laying of horizontal sub wiring system. Compared with PVC jumpers, LSZH (low smoke halogen-free) optical fiber jumpers contain flame retardant compounds and will not release toxic smoke during combustion. They are commonly used in unventilated areas exposed to public places such as subways and tunnels.
According to the number of optical fiber cores
According to the number of optical fiber cores, the optical fiber jumper can be divided into simplex (single core) optical fiber jumper and duplex (double core) optical fiber jumper. As shown in Figure 2, the simplex optical fiber jumper is usually composed of an optical fiber and a connector, which means that the signal can only be sent in one direction. For example, the signal can be transmitted from a to B through a simplex optical fiber jumper, but can no longer be transmitted from B to a in reverse. Duplex optical fiber jumper is composed of two optical fibers and two connectors. It can realize signal reverse transmission. For example, the signal can be transmitted from a to B or from B to a.
Simplex (single core) optical fiber jumper and duplex (dual core) optical fiber jumper
Divided according to optical transmission mode
According to different optical transmission modes, optical fiber jumpers are divided into single-mode optical fiber jumpers and multi-mode optical fiber jumpers. The single-mode optical fiber jumper can only transmit one mode of light, with small inter mode dispersion, which is suitable for remote communication. While the multi-mode optical fiber jumper can transmit multi-mode light at one time, with large inter mode dispersion, and the inter mode dispersion intensifies with the increase of transmission distance, so it is more suitable for short-distance transmission.
By polishing type
According to different polishing types of optical fiber connectors, optical fiber jumpers are divided into three types: PC, UPC and APC. PC optical fiber jumper adopts the connector with microsphere surface ground and polished, and the color is black; APC optical fiber jumper adopts 8 ° inclined grinding and polishing connector, and the color is green; UPC optical fiber jumper optimizes the end face polishing and surface finish based on PC optical fiber jumper, and the color is blue. There are differences in the structure and performance of the three polishing methods, mainly reflected in the insertion loss and return loss. Among them, APC is the most popular polishing type at present. To learn more about the differences between PC / UPC / APC, visit which connector to choose: PC vs UPC vs APC.
By polishing type
According to production and processing technology
According to different production and processing processes (i.e. whether to terminate the optical fiber connector), the optical fiber jumper can be divided into field terminated connector optical fiber jumper and factory terminated connector optical fiber jumper. Field termination connector optical fiber jumper refers to the field termination optical fiber connector built in the network. The termination process includes stripping the buffer layer, cleaning, polishing, bonding, testing, etc., which not only requires a large number of termination tools, but also requires the network administrator to have skilled termination technology. Factory terminated connector optical fiber jumper (i.e. pre terminated optical fiber jumper) refers to that the factory has terminated the optical fiber connector and optical fiber during production and processing. Before selecting this kind of optical fiber jumper, it is necessary to understand the interface type of equipment at both ends and measure the link length in advance. It is welcomed by users because of its convenient and fast installation (plug and play) and low requirements for users.
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