Category: Fiber Transceivers

by http://www.fiber-mart.comAfter recent years of research and practice, the first fiber optic cable to the curb (FTTC), Fiber to the Building (FTTB) is the consensus of telecom operators in the construction of access to fiber optic cable. The organization of the access cable is mainly used in the circular access trunk cable + star wiring cables, cable transfer equipment using a cable transfer box. With the popularization and promotion of the fiber, the fiber optic cable access in recent years demand for further growth: (1) fiber access number and proportion of large customers have greatly increased; (2) “light into the copper,” the construction of the implementation of the strategy, resulting in the increase of the number of service access points; (3) a number of important customer requirements to protect the fiber optic cable on the wiring segments; (4) increased demand for FTTH construction Fiber access growth in demand, leading to greatly increase the building size and coverage of the fiber optic cable. Existing building patterns and the network organization has been unable to meet the needs of large-scale fiber optic cable construction, especially in big cities some of the fiber access user-intensive problems of the region is more prominent, the following problems: (1) access to the backbone fiber ring long construction period, can not meet the requirements of rapid deployment; (2) cable transfer box space is limited, is not conducive to expansion; (3) non-standard way optical switching box with fiber inside the cable fixing point and other resource consumption; (4) a large number of customers wiring fiber optic cable to protect the existing ring cable structure in order to achieve the second route to increase the complexity of access to the backbone fiber optic cable used.

by http://www.fiber-mart.comThe 100G QSFP28 modules are the most popular 100G transceivers on the market today. Among many factors, this is primarily due to their low production cost, efficient size, and high output. This article is going to go over the specs, versions and details that make the QSFP28 market giant that it is today. 10Gtek currently manufactures mainly 4 modules of the 100GB QSFP28: SR4, LR4, CWDM4, and IR4 PSM. Let’s look at what each one provides. QSFP28 SR4 The runt of the 100GB transceivers is the the SR4. While SR stands for “short range” the transceiver still outputs the same 100GB/s speeds as the other drives. QSFP28 SR4 transceiver uses an MTP/MPO interface, using a multi-mode cable for short distances. Both the IR4 PSM and the SR4 use a 12-fiber MTP/MPO patch cable. The advantage of the SR4 is its economical price point. While it doesn’t have the longest distance, it does provide the same top quality speed, only for a fraction of the cost of the higher-end modules. And like all 10Gtek modules, it is fully tested on Cisco & Accton devices for application. 10Gtek has SR4s in-stock and ready for delivery. QSFP28 LR4 The top end of the QSFP28 product line is the LR4. The LR4 is a full duplex LC module that provides everything you could want in a transceiver. The duplex function allows the LR4 to work as both a transmit and receive path in one module. On the transmit side, 4 lanes of high-end optical signals push out over a staggering 25GBps per lane. On the receive side, the 4 lanes can de-multiplex data streams with a fully integrated de-multiplexer, transforming that data into CAUI-4 electric output. The module has a maximum link length of 10km and operates on 1 single-mode fiber cable with duplex LC connector. All 10GTek LR4 modules have been fully tested on Cisco & Accton devices to make sure they work on your system. This is the best of the line in 100GB transceivers from 10GTek. We always have them in-stock and provide lightning fast delivery. QSFP28 CWDM4 Along with the LR4, the CWDM4 is another full duplex LC module. Along with the LR4, it pushes out over 100GB from its 4 lanes of high-end optical transmitters and de-multiplexes with the same fully integrated de-multiplexer. The advantage of both the LR4 and CWDM4 modules is the easy of which upgrading can be done. Both modules run on common single-mode duplex LC patch cable requiring no need to replace all of those fiber patch cables. That saves money, headaches and downtime with trying to replace all of that cable. You can also save space with removable “push-pull” tabs. Like all 10GTek modules, it is fully tested on Cisco & Accton devices. The main difference between the CWDM4 to the LR4 is the maximum link length with the CWDM4 having a max length of 2km, suitable for most common demands. QSFP28 IR4 PSM Moving from our duplex LC modules, we get the IR4 Parallel Single Mode Transceiver. The IR4 is an MTP/MPO interface transceiver with 4 independent full-duplex lanes. Along with its LC brothers, it puts out at over 25GB/s per transmit lane and converts input signals with its parallel optical receiver lanes. The transceiver accepts input signals compatible with Common Mode Logic (CML) levels. You also don’t need to sacrifice distance with a 2km range. The IR4 PSM uses single-mode cable meaning it can work over long distances. Like all 10Gtek modules, it is fully tested on Cisco & Accton devices. The IR4 PSM is a great choice for customers that don’t want to upgrade to the more expensive LC modules but still high quality speed and distance.

by http://www.fiber-mart.comThere is a vast number of switches with PoE coming up, PoE(Power over Ethernet) is a kind of technology that is used to simplify the power supply. We are going to focus on several features to explain the reasons why you need a PoE switch. 1. PoE switches could help you out on bothering with the cables. Devices like Wireless Access Point(AP) and Network Camera could be able to gain power directly from the connected switches through the PoE port, which means the PoE switch can transmit data and power through a cable in the meantime. As to the Non-PoE switch, if you want to connect a Network Camera to it, basically you need a power cord to power up the Network Camera along with a cable for data transmitting. It means you have to cost extra money for the purchasing and maintenance of power cords. 2. PoE switches is a bit more expensive than Non-PoE switches. The only shortcoming of PoE switch is the expense of deployment, given the convenience that the PoE provided to us, it is quite reasonable for them to claim a higher price. But if you are going to deploy a group of switches and maintain the function in long-term, PoE switch can definitely help you save the budget with fewer cables. 3. There is no potential security issue need to be worried about. Some of you might be thinking what would happen if Non-PoE device were connected to PoE switch? Is there a potential to damage each other? Actually, there is no need to worry about it. The claim below quoted from a PoE switch of 10Gtek has fully explained that situation. ‘POE power port can automatically detect and supply power with all IEEE 802.3af compliant Powered Devices (PDs). The Non-PoE device is not mandatory powered, only transmit data.’ quoted from the Datasheet ofA7S3-31-3GT-8TX.

by http://www.fiber-mart.comOSFP MSAThe public launch of efforts to develop the Octal Small Form Factor Pluggable (OSFP) optical transceiver module for 400-Gbps applications has arrived. The multisource agreement (MSA) development group, led by Arista Networks, includes 49 members. “It is rare to see so much industry support behind a new optics module form factor,” said Andreas Bechtolsheim, chief development officer at Arista Networks. “We believe that the OSFP ecosystem will be a key element in enabling a successful market transition from 100 Gbps Ethernet to 400 Gbps and beyond.” In addition to Arista, OSFP MSA participants include Acacia Communications, Accelink, ADVA Optical Networking, Amphenol, AppliedMicro, Applied Optoelectronics, Barefoot Networks, Broadcom, Cavium, ClariPhy Communications, ColorChip, Coriant, Corning, Dell EMC, Finisar, Foxconn Interconnect Technology, Fujitsu Optical Components, Google, Hewlett Packard Enterprise, Hitachi Cable Systems, Huawei Technologies, Infinera, Innolight, Innovium, Inphi, Intel, Ixia, Juniper Networks, Kaiam, Lorom, Lumentum, Luxtera, MACOM, Marvell, Mellanox Technologies, Molex, MultiLane, NeoPhotonics, NEL America, Nokia, Oclaro, PHY-SI, SAE, Senko, Source Photonics, Sumitomo Electric Industries, TE Connectivity, and Yamaichi Electronics. The OSFP is a new pluggable form factor with eight high speed electrical lanes that will initially support 400 Gbps (8x50G). It is slightly wider and deeper than the QSFP but it still supports 32 OSFP ports per 1U front panel, enabling 12.8 Tbps per 1U. 400G Optics require more power than 100G Optics and many of them will not fit into the existing QSFP form factor. Depending on the specific 400G optics technology the initial power projections range from 7.5 Watt to 15 Watt. The OSFP MSA will seek to develop specifications for an optical transceiver capable of supporting transmission rates up to 400 Gbps (8x50G initially) in a size that will enable 32 ports per 1RU line card. The modules will support reaches from the data center to metro networks and, according to the MSA members, will be “slightly wider and deeper” than a QSFP module. The OSFP is able to meet the projected thermal requirements for 800 Gbps optics when those systems and optics become available in the future. What about Backwards Compatibility with QSFP?400G Optics require more power than 100G Optics and many of them will not fit into the existing QSFP form factor. Depending on the specific 400G optics technology the initial power projections range from 7.5 Watt to 15 Watt.The OSFP is able to meet the projected thermal requirements for 800 Gbps optics when those systems and optics become available in the future. What about Forwards Compatibility?The OSFP is able to meet the projected thermal requirements for 800 Gbps optics when those systems and optics become available in the future. The small size and comparatively low power consumption of the OSFP aims to meet the requirements of member Google and similar large-scale data center operators. The OSFP is the third MSA aimed at creating a 400 Gigabit Ethernet optical transceiver form factor.

by http://www.fiber-mart.comOSFP MSAThe public launch of efforts to develop the Octal Small Form Factor Pluggable (OSFP) optical transceiver module for 400-Gbps applications has arrived. The multisource agreement (MSA) development group, led by Arista Networks, includes 49 members. “It is rare to see so much industry support behind a new optics module form factor,” said Andreas Bechtolsheim, chief development officer at Arista Networks. “We believe that the OSFP ecosystem will be a key element in enabling a successful market transition from 100 Gbps Ethernet to 400 Gbps and beyond.” In addition to Arista, OSFP MSA participants include Acacia Communications, Accelink, ADVA Optical Networking, Amphenol, AppliedMicro, Applied Optoelectronics, Barefoot Networks, Broadcom, Cavium, ClariPhy Communications, ColorChip, Coriant, Corning, Dell EMC, Finisar, Foxconn Interconnect Technology, Fujitsu Optical Components, Google, Hewlett Packard Enterprise, Hitachi Cable Systems, Huawei Technologies, Infinera, Innolight, Innovium, Inphi, Intel, Ixia, Juniper Networks, Kaiam, Lorom, Lumentum, Luxtera, MACOM, Marvell, Mellanox Technologies, Molex, MultiLane, NeoPhotonics, NEL America, Nokia, Oclaro, PHY-SI, SAE, Senko, Source Photonics, Sumitomo Electric Industries, TE Connectivity, and Yamaichi Electronics. What is the OSFP (Octal Small Form Factor Pluggable)? The OSFP is a new pluggable form factor with eight high speed electrical lanes that will initially support 400 Gbps (8x50G). It is slightly wider and deeper than the QSFP but it still supports 32 OSFP ports per 1U front panel, enabling 12.8 Tbps per 1U. 400G Optics require more power than 100G Optics and many of them will not fit into the existing QSFP form factor. Depending on the specific 400G optics technology the initial power projections range from 7.5 Watt to 15 Watt. The OSFP MSA will seek to develop specifications for an optical transceiver capable of supporting transmission rates up to 400 Gbps (8x50G initially) in a size that will enable 32 ports per 1RU line card. The modules will support reaches from the data center to metro networks and, according to the MSA members, will be “slightly wider and deeper” than a QSFP module. The OSFP is able to meet the projected thermal requirements for 800 Gbps optics when those systems and optics become available in the future. What about Backwards Compatibility with QSFP?400G Optics require more power than 100G Optics and many of them will not fit into the existing QSFP form factor. Depending on the specific 400G optics technology the initial power projections range from 7.5 Watt to 15 Watt.The OSFP is able to meet the projected thermal requirements for 800 Gbps optics when those systems and optics become available in the future. What about Forwards Compatibility?The OSFP is able to meet the projected thermal requirements for 800 Gbps optics when those systems and optics become available in the future. The small size and comparatively low power consumption of the OSFP aims to meet the requirements of member Google and similar large-scale data center operators. The OSFP is the third MSA aimed at creating a 400 Gigabit Ethernet optical transceiver form factor.

by http://www.fiber-mart.com10GBASE-T SFP+ transceiver is specifically designed for high speed communication links that require 10 Gigabit Ethernet over copper cable (Cat 6a/7 cable). 10GBASE-T SFP+ copper transceiver is the first SFP+ transceiver that offers 10Gb/s communication over this type of media. Compared with other 10GbE optical modules, the 10G SFP+ copper transceiver has stable performance, and can take full advantages of the existing copper cabling. Introduction of 10GBASE-T SFP+ Copper Transceiver10G copper SFP+ transceiver has high performance, good reliability and is a cost-effective I/O solution for 10G Ethernet and 10G Fibre Channel applications. 10GBASE-T SFP+ copper transceiver is mainly used in Cat 6a or Cat 7 copper cabling system for 10G transmission with a maximum distance up to 30m. In addition, compared with SFP+ DAC cable, 10GBASE-T copper SFP+ transceiver can save at least 0.5W power consumption, and its port can both support STP (shielded twisted pair) and UTP (unshielded twisted pair). Therefore 10GBASE-T SFP+ copper transceiver is becoming more and more popular in network switches and servers because of its lower power consumption and pay-as-you-grow flexibility. 10GBASE-T SFP+ Copper Transceiver VSSFP+ DACDirect attach cables (DAC) have been available and deployed since about 2007. For 10Gb/s data rates, they are implemented as a fixed length of Twinax cable with SFP+ plugs integrated at both ends. Passive versions can be used for connections up to 7m and active versions for connectivity up to 15m. A DAC is a low power, low latency connection offering “pay-as-you-grow” flexibility but can be awkward, because it is difficult to install through typical cable management. The degree of difficulty increases with DAC length. In addition to limited length, a DAC can be an expensive connectivity solution insomuch as it is does not take advantage of installed Cat 6a structured cabling. But The 10GBASE-T SFP+ transceiver module is compatible with SFF-8432 and plugs into any standard SFP+ cage. The front of the module features a standard RJ45 socket ready for connection to any Cat 6a cabling. And it can reach up to 30m over CAT6a UTP cable, sufficient for all network access use cases. What’s more, The RJ45 connector interface is rock solid. No surprises will occur when deployed in your data center. 10GBASE-T SFP+ CopperTransceiver vs SFP+ Optical TransceiverShort wavelength (850nm) SFP+ optical transceiver modules can be used for lengths up to 300m at 10Gb/s data rates, through 10GBASE-T SFP+ copper transceiver module is a power optimized solution for lengths up to 30m. In comparison, multi-mode fiber cabling is considerably more expensive than Cat 6a UTP. SFP+ optical transceiver overall is not well suited for cost sensitive network edge applications. Field termination of fiber requires special skill sets and tools which significantly increase the complexity and cost of installation. But 10GBASE-T is compatibility with existing structured cabling devices and existing low-speed devices makes it uniquely suited for widespread deployment. These features, combined with superior cost and achievable features, make the simplest path of 10GBase migrate from Gigabit Ethernet to 10G Ethernet. Features of 10GBASE-T SFP+ CopperTransceiverCost effective at up to 30m distance on UTP cablesExtension of the life of any switch hardware, without having to change existing infrastructureArchitecture Flexibility: Supports Top of Rack, Middle of Row or End of Row architecturesAuto-negotiable backward-compatibility with previous-generation BASE-T networks for a seamless migration to 10GbEField twisted pair cabling with familiar RJ-45 connectorSupport for multi-gigabit data rates up to 10 Gbps  ConclusionAs 10GBASE-T network equipment becomes increasingly available, data center decision makers will want to take advantage of the cost savings, convenience, and flexibility provided by deploying 10 Gb/s technology over balanced twisted-pair copper cabling. Nowadays SFP+ 10GBASE-T transceiver, owing to the compatible issue with switches, is not offered by many vendors. However, from a network equipment designer’s perspective, 10G copper SFP+ modules will become popular in the near future.