Category: Fiber Transceivers

by http://www.fiber-mart.com

Network generic cabling is becoming more and more popular. As a high bandwidth and high security data transmission medium, optical fiber cable is widely used in various large and medium-sized networks. However, due to the high cost of optical fiber cable solutions, in some cases, copper core high-speed cable still plays an important role. For example, 10G SFP+ DAC direct attach cable is the high performance of 10G data center short-distance transmission application Price ratio solution. So next, we will introduce the advantages and wiring applications of this high-speed cable.

Advantages of 10G SFP+ DAC:

10G SFP+ DAC is a copper cable designed with both ends of the SFP+ connector. It is more flexible to use 10G SFP+ DAC for wiring, with a transmission distance of up to 15m, and less difficult to operate in the actual construction process. 10G SFP+ DAC wiring saves connection equipment, does not need to use distribution frame, and servers and network equipment can be directly connected to tor switch, which indirectly saves investment cost.

The 10G SFP+ DAC provided by fiber-mart.com usually supports a link length of 15m, which has the advantages of low power consumption and low latency. Therefore, it has become an ideal choice for the connection between the server and the switch. The 10G SFP+ AOC supports a link length of 100m, and is a low-cost solution to replace the optical module. Therefore, it is usually used for the connection between the switch and the switch.

10G SFP+ DAC cable and switch connection solution:

10G SFP+ DAC cable is widely used in the interconnection between 10G Optical fiber network cards, the interconnection between 10G tor switch and server, and the stacking of 10G Ethernet switches.

10G SFP+ DAC cable and 10G Optical module, TOR switch wiring solution:

In the current popular backbone topology, TOR switches are leaf switches, which are connected with backbone switches. In a 10G network, 10G server is connected to 10G switch through 10G SFP + DAC and cat6a / cat7 with 10G Optical module. 10G switch is connected to 40G backbone switch as leaf switch.

10G SFP+ DAC is characterized by low loss, high efficiency, energy saving and low cost, which can meet the growing cabling requirements of transmission rate, scalability and reliability. If you want to realize the connection between the server and the switch within 10m, it is recommended to select 10G SFP+ DAC.

by http://www.fiber-mart.com

When 10G network can not meet the increasing demand of the network, 40G network is more and more popular. With the continuous development, 40G Ethernet deployment has been accepted by more and more users. So do you know what factors should be considered when deploying 40G Ethernet? fiber-mart.com will solve the doubts for everyone！

Compared with the deployment of 10G networks, 40G is a bit more complex and requires more consideration, following will analysis three main factors.

◆ Selection of optical modules

In 40G networks, the main optical transceivers are QSFP+ and CFP modules, Since the demand for optical modules in the entire network deployment is very large, the cost of optical modules should not be underestimated.

However, the compatible module on the market has become more and more popular, and the performance is comparable to the original module, and the price is very reasonable. Therefore, when deploying 40G Ethernet, choosing the high-quality compatible module can not only ensure the efficiency, but also reduce the deployment cost greatly.

◆ Selection of cable

Now the optical cable is widely used, but copper cable still occupies an irreplaceable position. In the 40G network deployment, copper and fiber which is more suitable?

In wiring cost, copper price is low, deploying wiring costs are lower; For transmission distance, transmission distance of copper is only 7m. The optical fiber transmission distance is very long, for single-mode fiber is up to 10km, and the maximum transmission distance of multimode fiber is 100m to 150m.

◆ 40G MPO components

Most of the 40G multi-mode optical modules are based on MPO technology that can increase the fiber density. According to the IEEE802.3ba standard, in general, the MPO connector is used for multimode fiber connections with standard lengths. But with the increase in the number of optical fiber, the data center wiring difficulty has increased accordingly. To solve this problem, most data centers choose pre terminated MPO components to deploy 40G networks. It greatly saves the cost and reduces the deployment difficulty, it is an effective solution. Therefore, it is critical to determine the length of the cable and the customized pre terminating MPO components before wiring.

Above are the factors that should be considered when deploying 40G ethernet. Nowadays, 40G is developing rapidly and gradually become the preferred solution for many enterprises. In the process of continuous development, 40G network deployment costs have also been reduced to some extent, which also makes 40G network deployment has been more widely used. fiber-mart.com can provide you with an efficient and cost-effective solution to help you develop an economy and reliable 40G deployment plan.

by http://www.fiber-mart.com

AOC stands for Active Optical Cable, realize photoelectric conversion and transmission by the optical transceiver at both ends. 40G QSFP+ AOC is one of the most popular Active Optical Cables on the market. Why is it develop so fast? What advantages does it have? Today, fiber-mart.com will introduce 40G QSFP+ AOC to everyone.

What is 40G QSFP+ AOC?

40G QSFP+ AOC is the core component for realizing parallel optical interconnection, made of ribbon optical patch cord connect two high-speed 40G parallel connectors(As below picture). There are 4 data channels in each signal direction, each channel can work at 10Gbps speed, transmission distance is generally 1 to 100m.

What advantages does 40G QSFP+ AOC have?

Compared with the traditional 40G copper cable, 40G AOC has incomparable advantages:

※High transmission efficiency, small size, light weight, low energy consumption.

※ AOC compared with optical transceiver, there is no cleanliness problem in the case of failure. No need to test the terminal plug, can help users save more time.

※ AOC wiring consistency and repeatability is better, the closed ends are more easily to avoid the effects of environment and vibration swing. If there is a fault, can be directly replaced, savings costs.

※Compared with optical transceiver, AOC is cheaper, can save the deployment cost, and the transmission distance can also meet the needs of a variety of short distance transmission applications.

fiber-mart.com provides two kinds of 40G QSFP+ AOC

1.40G QSFP+ to QSFP+ AOC

2.40G QSFP+ to 4*10G SFP+ AOC

Can compatible with different brands of switches, such as Cisco, HUAWEI, H3C, Intel etc,. Following will list a product base on thses two typs.

The 40G QSFP+ AOC provided by fiber-mart.com use imported laser accessories, low power consumption, high performance; High-quality environmental protection optical cable outer cover material, fully protect fiber core, with better signal transmission characteristics and greater flexibility; The connection port use reinforcement design, so as to better control the bending angle. Protective thread, to provide more reliable high-speed data transmission effect, longer service life.

 Direct Attach Copper, referred to as DAC.It is including two kinds:

1.SFP+ DAC 10G;

2.QSFP+ 40G turns 4 SFP+.

This cable can not replace the port, can only be replaced together with the product line, the module

head and the copper can not be separated.Today we will introduce the SFP+ DAC cable,mainly to talk about what is SFP+ DAC Cable? We will also talk about its features and advantages.

What is SFP+ Direct Attach Copper Cable?

SFP+ DAC Cable is a copper interconnect using a passive twin-ax cable assembly that connects directly into an

SFP+ housing. It is low power, low cost and low latency with the added advantage of having the small form factor of SFP+, and smaller, more flexible cabling.

SFP+ DAC Cable is a low cost technical solutions to alternative 10G optical module. Widely used for the short-distance high speed Internet, such as gigabit network card,

Gigabit switch, million server, super computer, cloud computing, cloud storage network, etc.fiber-mart.com can provide you with 1 meter to 15 meters 10G SFP+ high-speed cable.

1pc of SFP+ high speed cable =（2pcs of SFP+ 10G modules+one pair of OM3 10G fiber pigtail）

1. Working temperature: 0 ~ 70°C, 3.3V power supply, low power consumption: <2.0W

2. Support hot pluggable, meet the standard of SFP MSA products

3. Meet the SFF-8431 standard and used for the electrical interface of 10GB Ethernet and 10G fiber channel

4. Two line interface to meet the management standards of SFF-8472 digital diagnostic monitoring

5. Main application range:

※ Large capacity I/O storage area network, network attached storage and storage server

※ Exchange type I/0, such as ultra-high bandwidth switches and routers

※ Data center cabling infrastructure

※ Connection between high-density network devices

※ 1-8G fibre channel and 1-10G Ethernet

Product features:

※ Support multi Gigabit data rates up to 10.5Gbps

※ Effective SFP+ solutions for high density and high bandwidth ports

※ Meet EMI/EMC performance hot-plug connection

※ High precision control and minimization in-pair and pair-to-pair skew

※ AC-coupled input and output, ultra-low line crosstalk effects

Product advantages:

※ Short Distance: Scientific layout,more reasonable length to save space;

※ Low power consumption: ultra-low power consumption, energy saving and environmental protection;

※ Save money: not only reduce the purchase cost, but also power saving, to enhance the competitiveness for enterprises;

※ More stable: fully optimized structure design and reduce the use of electronic components, avoid the repair rate caused by the electronic component,

more stable and durable.

 In recent years, customers require more and more flexible and scalable I/O solutions to meet the rigorous requirement of different deployments.

10G SFP+ DAC cables meets the demanding needs for today’s data center environments.

Moreover, price, performance and flexibility have made 10G SFP+ Cable an attractive choice for the data center.

Today we would like share some knowledge of 10G SFP+ DAC cable with you, hope it would help your business or market sharing enlargement.

1. What’s 10G SFP+ DAC Cable?

DAC means Direct Attach Cable.

10G SFP+ DAC Cable is a copper interconnect using an inexpensive Twinax copper cable assembly with SFP+ connectors on both sides based on SFP+ MSA(multi-source agreement).

It has the advantage of low power, low cost and low latency.

2.10G SFP+ DAC Cable type?

10G SFP+ DAC Cable uses a copper 10G cable that comes as active or passive Twinax cable assembly and connects directly into an SFP housing.

10G SFP+ Active Cable have a silicon chip to boost the performance of the cable. Without a chip, the cable is considered a “passive”cable.

DAC Cable shorter than 5 meters are passive and those longer than 5 meters are active.

3.10G SFP+ DAC Cable solution VS SFP+ Optical transceiver solution?

10G SFP+ DAC Cable solution: The distance is less than 15M between two devices, you can choose this solution with competitive price and high speed.

And it save cost, compare with SFP+ optical transceiver solution.

Optical transceiver solution: Considering the substitutability of products, if one side’s broken, the other side also can be used, that wouldn’t influence your working efficiency so much.

Compare with DAC Cable solution, it’s more flexible. If you want increase distance one day, you don’t need to purchase Optical transceivers again.

4.fiber-mart.com supply

No matter which solution you choose, which solution is more suitable for you.

The products you need we can supply, like DAC Cables with different distance, SFP+ Optical transceivers, Patch cords, etc,.

And the price is the best, service with 24 hours.

by http://www.fiber-mart.com

Optical media converter is a medium for transmitting short distance electrical signals and long distance optical signals. Because some short distance electrical signals can not be covered in some network environment, must use optical fiber to extend the transmission distance. The cost of upgrading copper wire to fiber is too high, so the application of media converter is more and more extensive.

Media converter is divided into single mode and multi-mode, the most fundamental difference is the transmission distance.

The operating mode of single mode media converter is single node and one port signal transmission, so the signal transmission distance is relatively long, which constitutes the construction of trans metropolitan area network;

Multimode media converter is just the opposite, its working mode is multi node, multi port signal transmission, so the signal transmission distance is relatively short, but the price is low, easy to use, mostly used for LAN internal construction.

Since media converters are similar in appearance, how can we distinguish single mode and multimode media converter? Let’s learn together!

1.See if there are S and M in the model. S for single mode, M for multimode.

2.From the transmission mode, the single mode media converter receives and transmits data on the same optical fiber patch cord , while the multimode media converter is on the two optical fibers.

3.Pull out dust cap to see inside interface color, generally the TX and RX interface inner side of single mode media converter are coated with white ceramics, the interface of the multimode is brown.

4.From the transmission distance, single mode media converter is from 20KM to 120KM, while multimode is 2KM to 5KM.

5.If the media converter is already used, can be distinguished by the color of patch cord. The yellow generally represents the single mode, and the orange represents the multimode.

Above are some methods to distinguish single mode and multi-mode media converters. In fact, there is no good or bad between the two, but the applicable network environment is not the same, how to choose should according to the use environment. It is important to note that single mode media converter can operate normally on single-mode and multimode optical fibers, but multimode media converter can not work on single-mode optical fiber. For more media converter knowledge, welcome to visit our website:www.fiber-mart.com.