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Fiber Optical Communication

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نوشته شده توسط : Katherine Wang Introduction to Optical Transponder Optical transponder is also referred to as WDM transponder, wavelength-converting transponder or OEO (Optical-Electrical-Optical) 3R (re-timing, re-shaping, and re-amplifying) converter, and the word “transponder” is named
نویسنده : بازدید : 0 تاريخ : جمعه 2 تير 1396 ساعت: 6:11
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Nowadays, more and more data centers utilize the WDM technology to gain bigger capacity for various applications, such as, 10G LAN, SONET/SDH, Fiber Channel, etc. Through this method, we can not only reduce the multiple fiber use, carry the signals t
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Whatrsquo;s CWDM Technology? CWDM, also referred to as coarse wavelength division multiplexing, is a kind of WDM technology that uses different wavelengths to multiplex two or more optical signals and carry them together via a single optical fiber, aiming at enhancing the network performance. Instea
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As the optical network develops fast, todayrsquo;s network needs much higher capacity than ever before, for carrying the large amount of data. Under this trend, the DWDM technology is come up with that can greatly expand the network capacity in long haul transmission. For those capacity-hungry appli
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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
نویسنده : بازدید : 3 تاريخ : چهارشنبه 9 فروردين 1396 ساعت: 23:43
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As the most commonly used module in 100G Ethernet 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 Ethernet 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, alternative solutions for 100G Ethernet network in data center. Why PSM4 and CWDM4 Interfaces Are U
نویسنده : بازدید : 3 تاريخ : جمعه 20 اسفند 1395 ساعت: 16:43
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As we know, the 10G SFP+ interface offers the highest density, lowest cost and lowest power 10 Gigabit Ethernet 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 alternative 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
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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 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
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Nowadays our network has a gluttonous demand for data, which brings a big challenge to Ethernet network. In order to meet the increasing demand for higher and higher data transmission rate, 10G, 40G, 100G and even 120G Ethernet Network are developed to be deployed for our system. Have you ever known how fast the data transmission speed is in 100G Ethernet network? Do you also want to deploy 100G Ethernet network for your system? Then, are you familiar with the transceivers for 100G Ethernet 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 Ethernet 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 Ethernet network, a series of 100G transceivers are designed for connecting cabling to the network a
نویسنده : بازدید : 3 تاريخ : دوشنبه 9 اسفند 1395 ساعت: 0:53
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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 Ethernet. 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 Ethernet 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
نویسنده : بازدید : 3 تاريخ : دوشنبه 9 اسفند 1395 ساعت: 0:53
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