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The 40-Gigabit QSFP+ transceiver module is normally a hot-swappable, parallel fiber-optical module with four independent optical transmit and receive channels. These channels can terminate in another 40G QSFP+ transceiver , or the channels can be broken out to four separate 10-Gigabit SFP+ transceivers. The QSFP+ transceiver module connects the electrical circuitry of the system with either a copper or an optical external network.

10GBASE X2 modules offer customers a wide variety of 10 Gigabit Ethernet connectivity options for data center, enterprise wiring closet, and service provider transport applications.

Difference between QSFP+ and X2

QSFP+

1.QSFP+ MSA, SFF-8436 compatible

2.Four independently addressable transmit and receive channels

3.Highly compact: savings of 60% on edge and board use compared to four comparable SFP+ modules

4.Electrically hot-pluggable

5.XFP-like latch mechanism for ease-of-insertion

6.Digital Diagnostics Monitoring Interface. allows customer management and monitoring of key modules parameters, analogous to SFP+

7.Optical connectivity via industry standard MPO/MTP terminated fiber ribbon

X2 10G

1.Compatible with SENPAK MSA Rev 3.0

2.Support of IEEE 802.3ae 10GBASE-L

3.XENPAK MSA package with duplex LC connector

4.With Digital Diagnostic Monitor Interface

5.Operating temperature range 0 to 70 degrees Celsius

6.Hot Pluggable 70-PIN Connector with XAUI Electrical Interface

Applications

The QSFP+ transceiver can be used primarily in short reach applications in switches, routers, and data centre equipment where it provides higher density than QSFP+ modules . The X2 offer customers a multitude of 10 Gigabit Ethernet connectivity options for data center, enterprise wiring closet, and company transport applications.



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The 100G optical modules are booming in 2017. And there are many types of 100G optical transceivers on the market such as for example CFP modules and QSFP28. Anyone who has experienced in using optical transceivers may know each sort of transceiver provides their own functional mode. And knowing this functional mode allows you to pick the suitable 100G optics for your networks.

CFP SR10

CFP SR10 is a 100Gbps parallel transceiver for optical communication applications. It supports link lengths of 100 m and 150 m on laser-optimized OM3 and OM4 cable. This transceiver converts the 10-channel 10Gbps electrical input data into 10-channel 850nm optical signals and then coupling them into ribbon fiber array (MPO connector) for 100Gbps optical signal transmission. On the receiver side, the optical signals are changed into electrical data for 10 output channels. Following is the functional diagram.

CFP LR4

CFP LR4 is another person in 100G CFP modules. But its working procedure is just a little not the same as CFP SR10 module . CFP LR4 uses four channels for transmitting and four channels for receiving. It uses four WDM optical signals and multiplexes them right into a single channel for 100G transmission. On the receiver side, it demultiplexes the 100Gbps signals into four WDM optical signals and converts them into four output channels. Its functional diagram is below.

QSFP28 SR4

QSFP28 SR4 can be a parallel optical transceiver. It provides four channels for transmitting and four channels for receiving, each with the capacity of 25Gb/s procedure for an aggregate data rate of 100Gbps on 100 meters of multimode fiber, which is comparable to the CFP LR4. However, the QSFP28 SR4 doesn’t multiplex the optical signals into WDM for transmitting. Its functional diagram is definitely shown below.

QSFP28 PSM4

The functional mode of QSFP28 PSM4 is a lot similar compared to that of QSFP28 SR4. It uses four independent transmit and receive channels. Each channel operates at 25Gbps. The difference mainly is based on the fiber they make use of. QSFP28 PSM4 works on single mode ribbon fiber cable, while QSFP28 SR4 works on multimode ribbon fiber cables.

QSFP28 CWDM4

Similar to PSM4, the QSFP28 CWDM4 also uses 4x25Gbps to attain 100Gbps. However the difference can be that the CWDM4 utilizes an optical MUX and DEMUX to lessen the fiber it requires, which is similar to the CFP LR4. It just requires a duplex single mode fiber cable for connecting two 100G CWDM4 optical modules. At the moment, CWDM4 links are found in both 100G CFP4 or the QSFP28 optical transceivers .



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تاریخ انتشار : سه شنبه 23 ارديبهشت 1399 | نظرات ()
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Both optical patch cord and optical transceiver have single mode / multimode. If the collocation is usually wrong when using, it will lead to the parameter error of the optical modules. How exactly to match the use of patch cord and optical transceiver?

What are the variations between single mode and multimode optical transceiver?

The wavelength of single mode modules are 1310nm and 1550nm, transmission distance can up to 160KM. A metropolitan area network that is commonly used for long distance and relatively high transmission rates.

The wavelength of single mode modules is 850nm, transmission distance can only up to 2KM. Used in short-distance transmissions.

What are the distinctions between single mode and multimode optical fiber?

Single mode fiber transmission has high frequency bandwidth, long transmission distance and high cost; The core diameter is definitely small, usually is 9/125um Singlemode patch cords ; Dispersion can be small, allowing only one mode to transmit. Single mode optical fiber can transmit optical fiber directly to the center, generally useful for long distance data transmission.

Multimode fiber has low transmission speed and short distance, but its cost is relatively low; With a larger diameter, usually is certainly 50 or 62.5 um; The dispersion is normally large, hundreds of mode transmissions are allowed. Multimode fibers are often used in short distance data transmission.

Optical modules and patch cords must be properly matched for normal use.

If the optical fiber in the info center are all multimode, then you'd better use multimode optical modules, single mode and multimode can't be mixed. Because the core diameter of single-mode fiber and multimode fiber is very different, it will cause too much loss when matching.Know more:www.oemfibers.com



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ST

ST (an AT&T Trademark) was probably still most popular connector for multimode networks until 2005. It has a bayonet mount and a long cylindrical 2.5 mm ceramic (usually) ferrule to hold the fiber. Most ferrules are ceramic, but some are metal or plastic. A mating adapter is used to mate two connectors. And because ST connectors are spring-loaded, you have to make sure they are seated properly. If you have high loss, reconnect them to see if it makes a difference.

The ST/SC/FC/FDDI/ESON connectors have the same ferrule size - 2.5 mm or about 0.1 inch - so they can be mixed and matched to each other using hybrid mating adapters. This makes it convenient to test, since you can have a set of multimode reference test cables with ST or SC connectors and adapt to all these connectors.

SC

SC is a snap-in connector also with a 2.5 mm ferrule that is widely used for it's excellent performance. It was the connector standardized in TIA-568-A, but was not widely used at first because it was twice as expensive as a ST. Now it's only a bit more expensive and much more common It's a snap-in connector that latches with a simple push-pull motion. It is also available in a duplex configuration.

FC

FC was one of the most popular singlemode connectors for many years. It also uses a 2.5 mm ferrule, but some of the early ones use ceramic inside stainless steel ferrules. It screws on firmly, but you must make sure you have the key aligned in the slot properly before tightening. It's been mostly replaced by SCs and LCs.

Mating Dissimilar Connectors

The ST, SC and FC connectors share a 2.5 mm ferrule design so they can be mated to each other. To do so requires a hybrid mating adapter.

From the top:

ST>FC

SC>FC

SC>ST

In the past, you could also get hybrid adapters for these connectors to FDDI and ESCON connectors which used the same ferrule.

LC

LC is a small form factor connector that uses a 1.25 mm ferrule, half the size of the SC fiber patch cable. Otherwise, it's a standard ceramic ferrule connector, easily terminated with any adhesive. Good performance, highly favored for singlemode.

The LC, MU and LX-5 use the same ferrule but cross-mating adapters are not easy to find.

MPO

MPO is a 12 fiber connector for ribbon cable, often called an array connector. The connector ferrule is plastic and contains 12 or 16 fibers in a row. The versions with 12 fiber rows can theoretically have 6 rows but more than two are rare. The 16 fiber rows are limited to 2 rows. Fiber ferrule alignment is by pins in one ferrule and holes in the other.

The MPO main use is for preterminated cable assemblies and cabling systems. Here is a 12 fiber MT broken out into 12 STs. It is also used for higher speed multimode links (40 or 100Gb/s) that use parallel optics.

MPO means multi-position optical. This connector is sometimes called a MTP cable which is a commercial name. It is covered in the TIA connector intermateability standard(TIA-604-5) for the 12 fiber version and OEMfibers for the 16 fiber version..

For more information on the MPO connector, including its issues with polarity and testing, go here



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تاریخ انتشار : شنبه 20 ارديبهشت 1399 | نظرات ()
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With the high-speed transmission and data capacity requirements of 40G / 100G network cabling in data centers, the application of high-density MPO / MTP fiber connectors and patch cords is becoming more common. The MPO / MTP fiber optic connector is normally a multi-core connector that can provide multi-fiber connections in one connector, thus supporting higher bandwidth and higher density applications. What is the difference between MPO and MTP?

MPO is "Multi-fiber Push On", which is the first-generation shrapnel-clamped multi-core connector developed by Japan NTT Communications Corporation in the 1980s. The size of the MPO connector is similar to the ordinary SC connector, however the density provides increased several times. Generally, 12-core optical fibers could be arranged in a row, supporting one or more rows of optical fibers in the same MPO connector. According to the different number of cores discharged in the connector, they are divided into one row (12-core) and multiple rows (24-core or more).Also applied to 400Gb may be the arrangement of 16/32 cores.In this way, an MPO connector can recognize the simultaneous transmission of 12-core or even more optical fiber signals, which saves a lot of space and resources for fiber optical wiring.

MTP is a registered trademark of US Conec, and its multi-core connector parts and ferrules are specifically called MTP connectors. MTP and MPO fiber optical connectors are in compliance with the international standard "IEC-61754-7" and the American standard "TIA-604-5 (FOCIS5)", which to a particular extent implies that the two are compatible.MTP fiber jumper is definitely a high-performance MPO connector with more optimized optical and mechanical properties.The appearance design is slightly different, but the two can be interchanged and interconnected.

MTP connectors are specially designed to improve performance and usability compared to MPO connectors. The distinctions between the two mainly include the following:

1.The outer frame sleeve of the MTP connector is designed to be removable, which is convenient for users to reprocess and polish the MT ferrule and flexibly change the positive and negative.

2.The floating ferrule of the MTP Multifiber Patch Cables can improve the transmission performance during mechanical docking.

3.There is a metal pin clip in the MTP optical fiber connector to fix the push ring, minimizing the accidental breakage when mating with the connector

4.The elliptical guide pin (PIN) of the MTP fiber optic connector is constructed of metal and oval design, which can maintain high-performance transmission more lasting.

MPO/MTP optical fiber connectors are small in size and high in density, and will support multi-core optical fiber connections, which greatly saves the space occupied by line ports and cables, so that higher density wiring can be achieved in a specific space.Great flexibility and scalability also produce cabling deployment easier and more adaptable to future network upgrades, expansions and changes.OEMfibers provides various specifications of MPO/MTP fiber connectors , fiber jumpers, and supports OEM / ODM customization.



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تاریخ انتشار : جمعه 19 ارديبهشت 1399 | نظرات ()
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There are several types of jumpers and pigtails. The main difference between fiber jumpers and fiber pigtails is certainly that only one end of the pigtail provides connectors, and both ends of the jumper have got connectors. Generally speaking, the jumper is normally cut from the middle to end up being two tail Slim.

1. What are jumpers and pigtails?

The jumper is a cable directly linked to the desktop computer or device to facilitate the connection and management of the device. The jumper has a thick protective layer and is often used between the terminal box and the optical transceiver.

Only one end of the pigtail includes a connector, and the various other end is an optical fiber connector, which is connected to other optical fiber cores in the kind of fusion splicing, and generally appears in the optical fiber terminal box.

2. Specifications and types of jumpers and pigtails

Jumpers are generally distinguished by single-mode and multi-mode in data transmission devices. The color of single-mode jumpers is normally yellow, and there are two wavelengths, 1310nm and 1550nm, and the transmission distances are 10km and 40km; Usually orange, the wavelength is 850nm, and the transmission distance is usually 500m. According to the joint type, it can be divided into the following types:

FC type jumper: round optical fiber connector, reinforced with a metal sleeve, and the fixing method is screw buckle.

SC-type jumper : rectangular connector, fixed by plug-in pin latch type, no need to rotate.

ST type jumper: round connector, using snap-in connection, the fixing method is screw buckle.

LC-type jumper: square connector, fixed by the modular jack (RJ) latch principle for easy operation.

The types of pigtails are mainly single-core pigtails, dual-core pigtails, 4-core pigtails, 12-core bundle pigtails, 12-color bundle pigtails, SC bundle pigtails, FC bundle pigtails, LC bundle pigtails Pigtails and ST bundle pigtails. In addition to these, it could be divided into the following types:

Bundle pigtails: These pigtails are also called pigtail bundles and consist of Corning tight-sleeved optical fibers, aramid fiber reinforced elements and flame-retardant PVC protective sleeves. Compared with other types of pigtails It is definitely more popular and widely used.

Ribbon pigtails: Ribbon pigtails are the same as bundle pigtails, both of which are multi-core pigtails. The ribbon pigtails contain 12-core optical fibers. One end can be used for fusion splicing and the other end is equipped with a connector.

Armored pigtails: The outermost layer of this pigtail has an additional metal protective sleeve than conventional pigtails, so it will be more durable than ordinary pigtails.

Fiber pigtails: low insertion loss, high return loss, good interchangeability and repeated pluggability, and very convenient to use.

Waterproof pigtail: with a dense protective sleeve and waterproof sealing joint, it is suitable for harsh environments.

3. Application of jumpers and pigtails

The jumper is mainly used for the bond between your optical fiber distribution frame or the optical fiber information socket and the switch, the connection between the switch and the switch, the bond between your switch and the pc, and the connection between the optical fiber information socket and the desktop computer. For management, apparatus room and work area subsystem.

Pigtails are mainly used in optical fiber communication systems, optical fiber access networks, optical fiber data transmission, optical fiber CATV, local area network (LAN), test equipment, optical fiber sensors, serial server, FTTH / FTTX, telecommunications networks and pre-termination installation.

4. Notes on jumpers and pigtails

The transceiver wavelengths of the optical modules linked by jumpers must be the same. Under normal circumstances, short-wave optical modules are equipped with multi-mode jumpers, and long-wave optical modules include single-mode jumpers to ensure the accuracy of data transmission.

The jumper should reduce the winding as much as possible during the wiring process, which can decrease the attenuation of the optical signal during the transmission process.

The connector of the jumper should be kept clean. After use, the connector ought to be sealed with a protective sleeve to avoid the entry of oil stains and dust. If stains are found, clean with a cotton swab dipped in alcohol.

The pigtail is relatively slender.The pigtail cross-section comes with an 8-degree angle and is not resistant to high temperatures.It will be damaged if it exceeds 100°C, so avoid using it in a high-temperature environment.

Conclusion

In the optical fiber transmission system, Armored pigtails and jumpers are the main tools. Nothing is lacking.There are also very high requirements for data transmission.The quality of the ferrule and the technology and method of production all determine the stability of data transmission.



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The transceivers for Juniper Networks devices are hot-removable and hot-insertable field-replaceable units (FRUs). You can remove and replace them without powering off the device or disrupting device functions.

Before you begin removing a transceiver from a device, ensure that you have taken the necessary precautions for the safe handling of lasers (see Laser and LED Safety Guidelines and Warnings).

Ensure that you have the following parts and tools available:

An antistatic bag or an antistatic mat

Rubber safety caps to cover the transceiver and fiber-optic cable connector

A dust cover to cover the port or a replacement transceiver

Figure 1 shows how to remove a QSFP+ transceiver . The task is the same for all types of transceivers except the QSFP28 and CFP transceivers.

To remove a transceiver from a device:

1.Place the antistatic bag or antistatic mat on a flat, stable surface.

2.Wrap and fasten one end of the ESD wrist strap around your bare wrist, and connect the other end of the strap to the ESD point on the switch.

3.Label the cable connected to the transceiver so that you can reconnect it correctly.

4.Remove the cable linked to the transceiver (see Disconnecting a Fiber-Optic Cable). Cover the transceiver and the end of each fiber-optic cable connector with a rubber safety cap immediately after disconnecting the fiber-optic cables.

5.To eliminate an SFP, SFP+ , XFP, or a QSFP+ transceiver:

a.By using your fingers, pull open the ejector lever on the transceiver to unlock the transceiver.

b.Grasp the transceiver ejector lever and gently slide the transceiver approximately 0.5 in. (1.3 cm) straight out of the port.

To remove a CFP transceiver:

a.Loosen the screws on the transceiver by using your fingers.

b.Grasp the screws on the transceiver and gently slide the transceiver approximately 0.5 in. (1.3 cm) straight from the port.

6.By using your fingers, grasp the body of the transceiver and pull it straight out of the port.

7.Place the transceiver in the antistatic bag or on the antistatic mat placed on a set, stable surface.

8.Place the dust cover over the empty port or install the replacement transceiver.

Installing a Transceiver

The transceivers for Juniper Networks devices are hot-removable and hot-insertable field-replaceable units (FRUs). You can replace them without powering off these devices or disrupting the device functions.

Before you start to install a transceiver in a device, make sure that you took the required precautions for safe handling of lasers (see Laser and LED Safety Guidelines and Warnings).

Make sure that you possess a rubber safety cap available to cover the transceiver.

1.Wrap and fasten one end of the ESD wrist strap around your bare wrist, and connect the other end of the strap to the ESD point on the switch.

2.Take away the transceiver from its bag.

3.Check to see whether the transceiver is covered with a rubber safety cap. If it is not, cover the transceiver with a rubber safety cap.

4.If the port in which you need to install the transceiver is covered with a dust cover, remove the dust cover and save it in case you should cover the port later. If you are hot-swapping a transceiver, wait for at least 10 seconds after removing the transceiver from the port before installing a new transceiver.

5.Using both hands, carefully place the transceiver in the empty port. The connectors must face the chassis.

6.Slide the transceiver in gently until it is fully seated. If you are installing a CFP transceiver , tighten the captive screws on the transceiver through the use of your fingers.

7.Remove the rubber safety cap when you are ready to connect the cable to the transceiver.



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تاریخ انتشار : چهار شنبه 17 ارديبهشت 1399 | نظرات ()
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DAC high-speed cable (Direct Attach Cable) is generally translated as direct cable, direct connection copper cable or high-speed cable.High- speed cable is a low-cost, short-distance connection solution that replaces optical modules. Both ends of the high-speed cable have got module cable assemblies, and the ports cannot be replaced. The module head and copper cable can't be separated, but compared to optical modules.The connector module on the high-speed cable does not have expensive optical lasers and other electronic components, thus greatly saving costs and power consumption in short-distance applications.

Huawei high-speed cable classification

1.10G SFP + to SFP + high-speed cable

The 10G SFP + to SFP + DAC uses a passive dual-axis cable assembly and is directly connected to the SFP + module.It features high density, low power, low cost, and low latency.

2.40G QSFP + to QSFP + high-speed cable

40G QSFP + to QSFP + DAC provides a very cost-effective way to establish a 40G link between the internal rack and cross-rack QSFP + switch ports, increasing the backbone link from the access layer to the core to 40G / 100G, Due to its high speed and low latency.It is widely used in high- speed backbone networks, enterprise network switching and network storage.

3.40G QSFP + to 4 * SFP + high-speed cable

QSFP + to 4 * SFP + DAC has a 40G QSFP + interface at one end, which meets the requirements of SFF-8436, and four 10G SFP + interfaces at the various other end, which meets certain requirements of SFF-8432. According to the customer's requirements for the distance of the two ends of the cable, add a splitter in the middle of the cable to recognize that one 40G optical signal is certainly divided into four 10G signals.

5.25G SFP28 to SFP28 high-speed cable

25G SFP28 to SFP28 DAC can provide customers with 25G high-bandwidth data interconnection capabilities, comply with IEEE P802.3by Ethernet standard and SFF-8402 SFP28, and are trusted in data center or supercomputer center system scenarios.

6.100G QSFP28 to QSFP28 high-speed cable

100G QSFP28 to QSFP28 DAC can offer customers with 100G high-bandwidth data interconnection capabilities, providing 4 duplex channels, each channel operating rate can support up to 25Gb / s, aggregate bandwidth is 100Gb / s, in line with SFF-8436 specifications, applied to QSFP28 port connection between devices.

7.100G QSFP28 to 4 * SFP28 high-speed cable

100G QSFP28 to 4*SFP28 DAC One end includes a 100G QSFP28 interface, and the other end provides four 25G SFP28 interfaces, which can provide customers with 100G high-bandwidth data interconnection capabilities, consistent with SFF-8665 / SFF-8679, IEEE 802.3bj and InfinibandEDR standards.It really is widely used in data center or supercomputer center system scenarios.



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تاریخ انتشار : پنج شنبه 11 ارديبهشت 1399 | نظرات ()
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In this era of information industrialization, whether it is the application of emerging technologies or the construction of smart cities, the application is certainly inseparable from the basic network. The construction of the essential network is mainly based on the site, active terminals and interconnection products, and the basic interconnection channel-wiring system for the construction of the network. The wiring system needs to be installed and installed on site.It is susceptible to factors such as the environment, product quality, and installation process. It is the most important link in determining the quality of network transmission. The reliability of the wiring system depends not only on the quality supervision in the project.But it also on the final check and on-site acceptance testing. Now introduces you to the optical fiber link test.

10G fiber link test

The MPO connector can support at least 12-core optical fiber, and the MPO connector is principally used for pre-connected optical cables. Because there are 12-core channels for MPO fiber, for duplex transmission, there are mainly three types of connection methods of A, B, and C (MPO fiber link polarity. The three methods are for the transmission end to connect to the reception end. The compatibility and consistency of the links. In the 10G Fibre Channel, the polarity of the MPO backbone link is mainly in the type B mode. The two ends are converted into the LC interface through the MPO to LC transceiver box, and then connected to the device through the LC jumper. This situation is mainly used in high-density wiring systems in data centers.

Link under test:

1 MPO-MPO fiber jumper, with MPO-LC transceiver backbone links at both ends

Step:

1) Collection the benchmark:

Two FC-LC test jumpers connect the light source and optical power meter.

2) Disconnect the jumper and the adapter

3) Connect the optical fiber under test (MPO-LC transceiver box at both ends, MPO-MPO pre-connected optical cable in the middle), and connect the LC test jumper to the two ports of the transceiver at both ends.

4) Record and save the loss value of the current tested fiber channel, and replace the source of light end LC jumper to the transceiver 2-12 port record and save until the loss test of 12 channels is completed.

400G / 100G MPO fiber link test

A standard MPO / MTP link is composed of two MPO jumpers at both ends, two MPO adapters and MPO's pre-connected backbone optical cable. In TIA- 568-C.0-2009B.4, for parallel multi-channel transmission, A and B are given.

In order to guarantee the compatibility and unity of the link, construction and maintenance are more convenient, especially MPO patch cords that are frequently plugged and replaced. In the 40G / 100G wiring system, Mode B is more commonly used. The number of channels of 40G and 100G are different, but the transmission link model is the same, both use MPO / MTP interface for end-to-end transmission. Therefore, we take 40G single- channel transmission as an example. When testing, we need to pay attention to the types of ports that are pre-connected with optical cables and jumpers-with and without guide pins (male).

The following is the most common MPO fiber link model with no guide pin (female) at both ends.

Tools: MPO light source and MPO optical power meter (MPO dedicated test source of light and optical power meter, the instrument's MPO port contains 12 light source outlets and optical power meter inlets).

1) Place the benchmark:

Use MPO-MPO (male-male) jumper to short-circuit the MPO source of light and MPO optical power meter, first select the polarity corresponding to the jumper on the instrument, and then press the reference value (setting reference) setting button, then the optical power meter Record the initial optical power value received.

2) Join MPO-MPO (male-male)

Keep the jumper connection at the light source end unchanged, only unplug the jumper plug of the optical power meter, and add an MPO-MPO (male-male) test jumper of qualified quality and correct polarity to the optical power meter (should be in advance Test passed).

3) Test

Place the instrument on the main test interface, insert the test jumpers on the source of light and the optical power meter into the two ends of the link under test, press the test button, and the instrument will give a pass / fail result (or give a similar prompt after a few seconds) (Picture), press the storage button, name and save the test results. Continue to test the next MPO fiber.

Because fiber links have great advantages in meeting people's demand for high bandwidth, the use of optical fibers is becomer wider. Whether wiring construction personnel or network maintenance personnel.It is necessary to master the skills of fiber link testing.Read more:https://www.oemfibers.com



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تاریخ انتشار : سه شنبه 9 ارديبهشت 1399 | نظرات ()
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Since the 40G Ethernet standard was proposed in 2010, QSFP + optical transceivers have begun to dominate in 40G Ethernet applications. The two basic interface specifications of QSFP + optical transceivers are 40GBASE-LR4 and 40GBASE-SR4, 40GBASE-LR4 is used in single-mode applications, and 40GBASE-SR4 is utilized in multi-mode applications.

Package type

The 40GBASE-SR4 optical transceiver package type is QSFP +, that is, a four-channel small pluggable optical transceiver. This package type was born to meet the market's demand for higher-density high-speed pluggable solutions. The entire system includes 38PIN connectors, electromagnetic interference (EMI) shielding components, optical transceivers, heat dissipation components, copper cable components, MTP optical cable components, optical loopbacks, etc.

QSFP-40G-SR4 optical transceiver product features

.4 channel full-duplex transceiver

.Transmission rate per channel is 10.5 gbps

.4 channel 850nm VCSEL array

.4 channel PIN photodetector array

.Low power consumption <1.5 w

.Hot plug QSFP package

.OM3 MMF transmission 100 meters and OM4 MMF transmission 150m

.MPO connector socket

.Built-in digital diagnosis function

.Operating temperature 0 ° C + 70 ° C

.3.3 v supply voltage

.Complies with RoHS6

The working principle of QSFP-40G-SR4 optical transceiver

When the QSFP-40G-SR4 optical transceiver transmits signals at the sending end, the electrical signals are first converted into optical signals by the laser array. When transmitting signals at the transmitting end, and when receiving signals at the getting end, the photodetector array converts the parallel optical signals into parallel electric signal.

The transmission principle of QSFP-40G-SR4 optical transceiver

The QSFP-40G-SR4 optical transceiver is transmitted through four channels. The electrical signal is first changed into an optical signal through the laser array, and then the photodetector array converts the parallel optical signal into a parallel electrical signal, which is usually then used together with the MTP / MPO connector , To achieve 40G optical connection.

QSFP-40G-SR4 optical transceiver application

QSFP-40G-SR4 optical transceiver adopts MTP / MPO interface, the working wavelength is 850nm, generally used in multimode applications. When it is used with OM3 / OM4 multimode fiber , the transmission distance is 100m and 150m respectively, which is mainly used to realize the connection between network devices in the data center. The QSFP-40G-SR4 optical transceiver can not only use MTP / MPO fiber jumpers to connect two 40G network devices, but also can be used with MTP / MPO to LC fiber jumpers to understand the bond between 40G network devices and 10G network devices connection.



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تاریخ انتشار : دو شنبه 8 ارديبهشت 1399 | نظرات ()

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