Fiber Optical Communication

When choosing fiber transceiver, you may usually hear the description like Tx (transmit) power and Rx (receive) power for a fiber transceiver. Do you know what do these two phrases stand for? If we want to choose a proper kind of fiber transceiver, do we have high requirements on its Tx power and Rx, ...ادامه مطلب

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, ...ادامه مطلب

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 manner. 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 interconnect using a twinax cable assembly that connects directly into an SFP+ housing, designed for 10G short distance tr, ...ادامه مطلب

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 interconnect system. As a highly cost-effective solution for 40G to 40G or 10G to 40G connection, 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 connecting 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, ...ادامه مطلب

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 connecting cabling to the network a, ...ادامه مطلب

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, ...ادامه مطلب

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,, ...ادامه مطلب

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, ...ادامه مطلب

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 connection, QSFP+ transceiver, a compact, hot-pluggable module, is designed with four independent channels 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 connected to another QSFP+ transceiver and in 10G to 40G application where one QSFP+ transceiver will be connected 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 , ...ادامه مطلب

As we all now, fiber optic cable jumper plays an important role in Etheet network connection, which becomes more and more diversified to satisfy the different connection 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 connectors. In the conditioned fiber, a single mode fiber and a multimode fiber are fusion spliced in an offset manner, with a precise core alignment and ang, ...ادامه مطلب

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 manner. Selecting a Proper Etheet Patch Cable Before making the Etheet patch cable, ...ادامه مطلب

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, ...ادامه مطلب

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, ...ادامه مطلب

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 connect, disconnect 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, ...ادامه مطلب

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 manner, 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 connection 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, ...ادامه مطلب