Fiber Optical Communication
درباره سایت
آخرین مطالب
- به وبلاگ خود خوش امدید
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- Why Not Using DWDM Technology to Build Your Network?
- Optical Transponder—an Important Component in WDM System
- How to Build an Economical Long-haul 500Gbps Metro Network?
- Fiber Optical Communication
- Why Do We Need Optical Transponder (O-E-O)?
- CWDM Technology—Economically Saving Fibers for Your Network
- Confused About Loss in the Long Haul DWDM Network?
امکانات وب
As the most commonly used module in 100G Etheet network, QSFP28 transceiver can be fitted with various of 100G interfaces to meet the requirements of different applications. For instance, the most basic 100G interfaces, 100GBASE-SR4 always used for short distance transmission, no longer than 100 m, and 100GBASE-LR4 highly recommendable for long-haul optical transmission, with the lengths up to 10 km, occupy the majority of the 100G market. Considering that, if we want to deploy the 100G Etheet network with the transmission distance longer than 100 m but shorter than 10 km, the QSFP28 100GBASE-SR4 transceiver canrsquo;t satisfy the requirement and the QSFP28 100GBASE-LR4 transceiver is not the most cost effective one. In order to deal with the mentioned applications, the 100GBASE-PSM4 and 100GBASE-CWDM4 interfaces for QSFP28 transceivers came into market, expected to be the optimized, alteative solutions for 100G Etheet network in data center.
Why PSM4 and CWDM4 Interfaces Are U
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As we know, the 10G SFP+ interface offers the highest density, lowest cost and lowest power 10 Gigabit Etheet solution, while the SFP+ transceiver is published and available for achieving the migration from 1G to 10G network. However, if the mass 10G migration is required, the total cost for SFP+ fiber optical solution is still high. In order to reduce the cost for 10G migration, experts come up with the SFP+ twinax direct attach cable solution for 10G short distance transmission as a ideal cost effective alteative to the fiber optical solution. In this paper, it will mainly talk about the SFP+ twinax direct attach cable, which may be useful for you to deploy a 10G short distance transmission in a cost effective maer.
Whatrsquo;s the SFP+ Twinax Direct Attach Cable?
SFP+ twinax direct attach cable, also referred to as SFP+ DAC or 10G twinax cable, is a copper intercoect using a twinax cable assembly that coects directly into an SFP+ housing, designed for 10G short distance tr
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With the growing network requirements for higher network speed, greater scalability, higher performance and reliability, 40G network gradually becomes a better choice for most data centers. Under this condition, the 40G QSFP+ copper direct attach cable(DAC) came into market, which is designed for delivering an aggregate data bandwidth of 40Gb/s in a short distance and high density cabling intercoect system. As a highly cost-effective solution for 40G to 40G or 10G to 40G coection, there is no doubt that the QSFP DAC twinax cableplays an important role in 40G cabling for better meeting the increasing requirements.
QSFP DAC Twinax Cable Overview
QSFP DAC twinax cable is also referred to as QSFP+ copper direct attach cable or QSFP copper cable, used for coecting switch to switch or switch to sever. It can be simply divided into three types, QSFP+ to QSFP+ direct attach copper cable, QSFP+ to 4 SFP+ direct attach breakout copper cable and QSFP+ to 4 XFP breakout copper cable. Since t
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Nowadays our network has a gluttonous demand for data, which brings a big challenge to Etheet network. In order to meet the increasing demand for higher and higher data transmission rate, 10G, 40G, 100G and even 120G Etheet Network are developed to be deployed for our system. Have you ever known how fast the data transmission speed is in 100G Etheet network? Do you also want to deploy 100G Etheet network for your system? Then, are you familiar with the transceivers for 100G Etheet network? In this article, it will mainly introduce some commonly used 100G transceivers that will guide you to select the proper transceiver for your network if you want to make the 100G migration.
100G Transceiver Solutions
100G Etheet network is a kind of computer networking technology developed for transmitting data at rates of 100 Gbit/s. To meet the increasing requirement of high speed in 100G Etheet network, a series of 100G transceivers are designed for coecting cabling to the network a
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As the number of cloud applications, big data services and virtualized workloads has increased dramatically over these years, the demand for more capacity and higher transmission speed becomes an urgent task for your network. For the sake of accommodating these applications in your system with higher data transmission rate and better performance, you are suggested to upgrade your network to 40G Etheet. Hence, you can get a smoothly faster network without buffering that may cause a time delay. Here will introduce two 40G OSFP+ transceiver solutions for data center short distance transmission and analyze their features for you, which may be helpful when you deploy 40G Etheet network for your system.
Overview of Two 40G OSFP+ Transceiver Solutions
As we know, 40GBASE-SR4 QSFP+ transceiver and 40GBASE-SR BiDi QSFP+ transceiver are designed for short distance transmission, but their features are extremely different from each other, varying from working principle to cabling method. The t
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When choosing QSFP+ transceivers for designing 40G Etheet network, you may hear the descriptions like ldquo;Single-mode QSFP+rdquo;, ldquo;Multimode QSFP+rdquo;. Are you familiar with these modules? What do these words stand for? Whatrsquo;s the difference between these two QSFP+ modules? Which one should you choose to deploy your 40G Etheet network? And what should be noticed when using them?
In fact, the words single-mode and multimode here mean the different types of optical fibers that QSFP+ transceivers work with. For instance, single-mode QSFP+ means that QSFP+ transceivers run through single-mode fibers (SMF), while multimode QSFP+ will work with multimode fibers (MMF). In this article, we will have a discussion about the differences between the two QSFP+ transceivers and introduce the notice when using them.
Single-mode QSFP+ Overview
Generally, single-mode QSFP+ transceivers mainly work in 1310nm wavelength, mostly applied for 40G long distances transmission, such as, 1km,
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Since data centers have been experiencing an great infrastructure change to achieve higher levels of performance and scalability, the demand for 100G Etheet network increases day by day. To better accommodate this great change, there are several kinds of transceivers designed for deploying 100G Etheet network, such as, CFP, CFP2, CFP4, QSFP28, CPAK, etc. Among these 100G optics, QSFP28 transceiver offers the optimal solution for the 100G migration with the lowest power consumption which is very commonly used at present. In this paper, it will introduce QSFP28 transceiver and analyze the reason why QSFP28 transceiver is so popular in 100G Etheet network.
QSFP28 Transceiver Overview
As the smallest 100G form factor transceiver, QSFP28 transceiver has the same size and lane number as 40G QSFP+ transceiver, which is implemented with four 25-Gbps lanes to achieve 100G transmission. With the design of an upgraded electrical interface, it is able to support signals rates up to 28 Gbit/s
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It is well known that SFP+ transceivers like SFP-10G-SR and SFP-10G-SR-S are very commonly used and perform greatly in 10G short distance transmission. When higher bandwidth is required, several SFP+ transceivers can be used together to offer multiple 10G links as a common solution. However, if an individual 40G link is implemented in this case, it has the ability to perform higher with much faster data transmission rate than multiple 10G links. As the deployment of 40G Etheet network is not so simple as that of 10G Etheet network, the following will introduce three widely applied solutions for short distance transmission in 40G Etheet network which can be useful for you to deploy individual 40G link instead of multiple 10G links.
Three Solutions to Support 40G Short Distance Transmission
With the popularity of 40G Etheet network, 40G solutions, especially 40G QSFP+ modules, have been widely applied to finish 40G data transmission. At present, there are various kinds of 40G sol
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To face the challenge of migration from 10G to 40/100G Etheet network, the fiber technology for higher data transmission speed has developed in a really fast maer. Under this trend, a series of high density fiber equipment, especially MPO/MTP products, are designed to control the costs, by way of maximizing retu on assets. Have you ever known about MPO/MTP products, for instance, MPO/MTP cable, MPO/MTP cassette and MPO/MTP patch panel, which are very popularly used in recently years? Among these high density products, MPO/MTP cassette plays an indispensable role in 10G to 40/100G migration, as one of the ideal solutions for high density data centers. The following will mainly introduce the basic information of MPO/MTP cassette and illustrate how it is used for 10G network and the upgrading from 10G to 40/100G network.
MPO/MTP Cassettemdash;Ideal Solution for High Density Fiber Cabling System
MPO/MTP cassette is a modular module that offers secure and smooth transition between MPO
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Nowadays, there is a widespread conce over the migration from traditional 10G to 40/100G Etheet network, which seems to be an irreversible trend. As we know, 40/100G Etheet network can greatly address the problem of very low network speed. Do you also consider upgrading your system for higher bandwidth and larger capacity? There is no doubt that fiber cables must be the first choice for a smooth 40/100G migration, which almost makes copper cables obsolete. But which kind of fiber should be chosen? Is there any key notice should be taken into consideration when selecting fiber for the migration? These problems will be explored and answered in the following parts.
Which Fiber Type Should Be Chosen for 40/100G Migration?
It is reported that over 80% of data centers support their network within 100 meters in recent years. Thatrsquo;s to say, if the fiber has the ability to transmit 40/100G signal for a short distance, it almost satisfies the needs for migration. In general, there are
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With the continuously growing demand for higher capacity and bandwidth, the deployment of 40G Etheet network becomes much more necessary than ever before. As one of the key components to accomplish a whole 40G coection, QSFP+ transceiver, a compact, hot-pluggable module, is designed with four independent chaels to transmit and receive 10G signals, supporting 4x10 Gbit/s data rates. This kind of module can be used both in 40G to 40G application where one QSFP+ transceiver will be coected to another QSFP+ transceiver and in 10G to 40G application where one QSFP+ transceiver will be coected to four SFP+ transceivers.
Do you also want to upgrade your system from 10G to 40G Etheet network by using QSFP+ transceiver? The following will detailedly describe the step-by-step procedures for installing QSFP+ transceiver and attaching optical network cable to the transceiver, which will be helpful for you to achieve a fast, smooth and seamless 40G network deployment.
QSFP+ Transceiver
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As we know, duplex LC interfaces are widely used in 10G SFP modules, for instance, SFP-10G-LR-S module and SFP-10G-SR module, which occupy the majority of 10G module market. However, for 40G QSFP+ modules, both LC interface and MTP/MPO interface play important roles in meeting the high speed transmission, which are available on 40G QSFP module market. What are the differences between these two interface types? Which one should be chosen when deploying 40G Etheet network? Do they function similarly in the same application? Letrsquo;s talk about this topics and find one kind of 40G QSFP+ module with the most suitable interface type so as to make a smooth 40G coection for our network.
Differences Between LC Interface and MTP/MPO Interface
From the following figure, we can see the examples of QSFP+ modules with two different interfaces. The left one is the module with with LC interface, while the right one is with MTP/MPO interface. The differences between these two kinds of modules va
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As we all now, fiber optic cable jumper plays an important role in Etheet network coection, which becomes more and more diversified to satisfy the different coection requirements in recent years. For instance, standard fiber patch cable like single mode patch cable and multimode patch cable, special fiber patch cable like mode conditioning patch cable and bend insensitive patch cable, etc. Among these various fiber patch cables, mode conditioning patch cable has been one of the most popularly used fiber patch cable due to its unique features and advantages, which will be introduced in the following text.
What Is Mode Conditioning Fiber Patch Cable?
Mode conditioning patch cable is a special kind of duplex fiber patch cable that consists of two fibers, a conditioned fiber and a non-conditioned fiber, capped at either end with coectors. In the conditioned fiber, a single mode fiber and a multimode fiber are fusion spliced in an offset maer, with a precise core alignment and ang
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Are the Etheet patch cables you purchase from the local or online stores always at the proper length? Or not so suitable for your network because they are too long or too short that donrsquo;t meet your expectations? Have you ever considered making the improper Etheet patch cable into a suitable one by yourself, so that you can deploy your network by using you own Etheet patch cable and save a lot of money, time and space? In fact, terminating the Etheet patch cables is not so difficult but very useful for fast network deployment, which will be presented in the post. Meanwhile, there are several important things you should take into consideration before making the Etheet patch cable termination, which will be also illustrated in details. Hope these information will guide you to make your own Etheet patch cable and then deploy your Etheet network in a very fast, smooth and cost effective maer.
Selecting a Proper Etheet Patch Cable
Before making the Etheet patch cable
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It is well known that network patch cable can be commonly wired as straight-through or crossover cable, used for data transmission. Both of these two network patch cables are made up of four pairs of high performance twisted wires with different colors, terminated by the RJ45 keystone jacks at each side of the cables. As for their applications, they are designed for serving different aims, with different wire arrangements inside their cables, which will be introduced in the following text for guiding you to pick the most proper one for deploying you network.
Different Wiring Standards for Wire Arrangements
Before discussing the differences between the straight-through and crossover cable, it is necessary to introduce two wiring standards, T568A and T568B, for better understanding the different wire arrangements in each kind of the cable. These two kinds of wiring standards are recognized by ANSI, TIA and EIA for wiring the network patch cables. Generally, the T568B wiring standard is m
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Although the copper-based patch cable performs not so well as the fiber patch cable in Etheet network, it is still popularly used due to its advantages of low cost, high flexibility, easy installation and operation. So far, there are various kinds of copper-based patch cables that were published and came into the market in succession, such as, cat5/cat5e, cat6/cat6a and cat7 Etheet cable, etc. Among these copper-based patch cables, Cat5e and Cat6 Etheet cable are two of the most commonly applied types that have similar features and functions, which may be a little hard to distinguish. Do you also feel confused? Letrsquo;s study the knowledge of these two patch cables and acquire which one is more suitable and cost effective to be used.
Introduction to Cat5e and Cat6 Etheet Cable
Cat5e Etheet cable is an improved version of Cat5 Etheet cable, published in early 2001. In comparison with Cat5 Etheet cable, it has a very similar appearance, but composed of four pairs of coppe
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Patch Panel Overview
The patch panel, also known as the patch bay, patch field or jack field, is a functional unit with a number of same or similar jacks, designed to conveniently and flexibly coect, discoect and monitor circuits in the cabling network. There is no doubt that the patch panel plays an important role in collecting data and routing it to the intended destination, with the function of enabling the ease of cabling network management and avoiding the data transmission error or failure.
At present, there are both copper and fiber patch panels available on the market, both of which are very popularly used due to their features and advantages. To better know about the patch panel, here offers a kind of 48 port cat6 patch panel in the following figure. From this figure, you can easily lea the appearance of the front and rear of the 48 port cat6 patch panel.
Patch Panel Importance to Cabling Network
We used to regard the patch panel as the ldquo;traffic lightrdquo; for ou
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There is no denying that it is very convenient for the public to use the wireless network, which is more and more popularly used in recent years. However, if the high speed and efficiency are required, the wired network must be more suitable for you to choose, which always works with Etheet patch cables to enable a more secure network with faster speed. In general, except for some special devices like cellphone that can only used in the wireless network, the rest of your devices will perform better in the wired network.
Would you also like to deploy a wired network for your home? Since the deployment of a wired network is more sophisticated than that of a wireless network, this paper will present some considerations for you to set up a fast and smooth wired home network.
Design Your Network
Before deploying the wired network, there are some points that you should take into account. Firstly, you must decide how many rooms you want to run your wired network through, which will mainly
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With the rapid development of the network technology, the network deployment becomes much more complicated than ever before to satisfy the increasing network needs. In order to deploy the the complicated cabling network in a tidy, fast and correct maer, the patch panel is designed to better manage the patch cables in the network, which can be divided into two types, the copper patch panel and the fiber patch panel. To avoid the coection errors and making the cabling network flexible, reliable and neat, this paper will mainly introduce some commonly used types of the copper patch panel that may be helpful for you to pick the most suitable one for your cabling network.
Commonly Used Types of Copper Patch Panels
While the copper patch panel has made a great contribution to the complicated cabling network as a cost effective solution, the type of the copper patch panel has become more and more diversified, such as, shielded and unshielded patch panel, flat and angled patch panel, commo
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Although the wireless network becomes more and more popular for its convenience, most of our home still deploy wired coections with copper based devices that can work faster and more stable. Every so often, we get questions from people who plan to deploy copper based networks in their homes. The most frequent question we get is, "how to fast build a copper network at home?" Considering that, the following will give detailed instructions for building a copper home network in a very fast and smooth maer.
Step by Step Instructions
As the copper based network has an important place in the our daily life, it is very necessary to know the steps for deploying our own copper based network that is much easier than that of the fiber based network. Of course, before deploying, you should consider your requirements for the copper based network, such as, easier access to broadband and WiFi, higher network performance. Then letrsquo;s study the step by step instructions for building a copper net
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As the network develops fast, the form of the network is gradually migrated from wired coection to wireless coection, meeting the increasing needs of the network. Does the wireless coection perform better than the wired one? Are you still hesitating over which coection should be choose to deploy your network? In this paper, it will mainly study the basic information of the wired and wireless coection and find which one is better by comparing these two kinds of network coection, giving you the answer you may care about.
Wired and Wireless Network Overview
As their names imply, the wired network is deployed by using the network patch cable to coect all the devices in the wired network, while the wireless network utilizes radio waves and/or microwaves to sustain interaction chaels linking computers, as shown in the following figure. Generally, both of the two forms of network have their own features, which will be introduced below.
In a wired network, network patch cable
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It is well known that there are various kinds of coectors used to terminate the fiber optic patch cables, such as LC, SC, FC and MTP/MPO coector. As for terminating the copper based patch cables widely applied in home wired network, there are also several RJ-style coectors published like RJ11, RJ12, RJ21, RJ35 and RJ45 jack, etc. Among these jacks, the RJ11 and RJ45 jack are the most commonly used jacks that have common in appearance, which may be not easy to tell. Since the RJ45 jack is specially designed for terminating the Etheet patch cable like Cat 5e cable and Cat 6 cable, do you wonder that can the Cat 5e cable or Cat 6 cable be also terminated by RJ11 jack? Letrsquo;s study the RJ11 and RJ45 jack information and find the differences of these two jacks, then seek the answer.
What are RJ11 and RJ45 Jack?
ldquo;RJrdquo; is the acronym of ldquo;registered jackrdquo;, which is a standardized telecommunication network interface designed to coect voice and data equipment to
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As we move to more and more complicated network, the cable management becomes much more difficult than ever before. If there is something wrong in the cable deployment or management, the system downtime may occur that directly affects the productivity and efficiency of the system. Meanwhile, if the cable is not well managed, the whole system will look very dirty, disorderly and bad. In order to solve these issues, several solutions are put forward to make the cable management faster and easier and maximize the performance of the system, such as, zip tie, patch panel, J-Hook, etc. In this paper, it will mainly study these commonly used cable management tools for deploying a sophisticate, but stable and tidy cabling network.
Zip Tie Solution
Zip tie can be also called cable tie or wire tie that functions as a fastener for holding cables or wires together. Compared to other cable management tools, zip tie is very cheap and easy to be used. Hence, it can be easily found in a wide range of
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In recently years, more and more data centers and server rooms feature high density and large capacity, in which there are a large number of copper or fiber patch cables used for coecting the whole network. In order to ensure the performance of the whole network, there is no doubt that these patch cables should be coected with no error. Any improper cable management would directly result in cable damage and network failure that can cause data transmission error, performance issue and system downtime. But the fact is that the work of managing these massive patch cables is a quite difficult task, which is easily in error. Then what can we do to achieve good cable management and ensure network performance? This paper will mainly study the cable lacing bar, which is designed for achieving good cable management.
Cable Lacing Bar Introduction
It is well known that cable ties (like nylon cable ties and velcro cable ties), patch panels (like copper patch panels and fiber patch panels) and
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Have you ever been aoyed by the messy patch cables deployed in your cabling network? Did you take the cabling pathway as an ideal solution to manage the massive cables that provides better support to the cables? In fact, when deploying a high density network with large amount of cables, it is very necessary to choose the cabling pathway to manage the cables, which is generally made up of conduits, cable trays, ladder racks, surface raceways, and underfloor ducting systems. However, considering that it would cost a lot if we put every inch of the cable on the top of each support element to deploy the cabling pathway, this paper will introduce the J-Hook solution that can not only save the construction material but also provides well continuous support for the messy cables.
What Is the J-Hook?
J-Hook is a common kind of fastener, usually made of galvanized steel but sometimes of plastic polymers, that is designed for giving support and management to the massive cables, so that the cabl
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It is well known that the 10G Etheet network has been a traditional favorite that is very commonly used today, and then the 40G Etheet network was published to keep pace with the increasing requirements. However, nowadays, the 10G/40G Etheet network can not meet the demands of some data centers any more, and those data centers are hungry for higher network speed and larger capacity. In order to solve this, they decide to deploy the 100G Etheet network that can accelerate the network speed and expand the network capacity greatly. Are you also eager to upgrade your system? In this paper, it will introduce the basic knowledge of QSFP28 module and some commonly used QSFP28 modules, which may guide you to deploy a smooth and fast 100G Etheet network.
QSFP28 Module Overview
QSFP28 module is the smallest 100G form factor transceiver but has the same size as QSFP+ module used for 40G applications. Although the appearance of QSFP28 module is similar to that of QSFP+, it is a kind of o
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