标签归档:100GbE

Double Density QSFP (QSFP-DD) Is Coming

Recently the building of QSFP-DD (Multi Source Agreement) Group has excited optical communication industry. This group, including 13 members which are all the leading vendors in the industry, like Cisco, Brocade and Finisar, aims to create a upgraded version of QSFP transceiver, which is called QSFP-DD ( double density QSFP) and will be able to support 200G/400G Ethernet.

Introduction

The QSFP-DD is similar to the current QSFP. But there are many differences between the current QSFP. The reason why the new transceiver is called “double density” is related to the current 100G QSFP28 transceivers. The “double density” means the doubling of the number of high-speed electrical interfaces that the module supports compare to regular QSFP28 module.

QSFP-DD transceiver

QSFP-DD and QSFP28

We can understand the QSFP-DD better by comparing it with the current 100G QSFP28 module. QSFP28 transceiver is a four-channel transceiver which is able to transmit and receive 100G per second simultaneously. With the advantages of high speed and low power, QSFP28 transceiver is becoming more popular than other 100G transceivers like CFP2 and CFP4. The 100G QSFP28 transceiver is implemented with four lanes with each supporting data rate of 25G.

The working principle of QSFP-DD is similar with 100G QSFP28 transceiver. The QSFP-DD MSA group will increase the lane to eight. There will be a row of contacts providing for an eight lane electrical interface in QSFP-DD. If modulated by NEZ, each lane of the QSFP-DD can support data rate up to 25G, thus, it can support a total data rate of 200G. If modulated by PAM4, it can support data rate up to 400G with each lane supporting data rate of 50G. The MSA group also announced that the QSFP-DD can enable up to 14.4Tbps aggregate bandwidth in a single switch slot, which can definitely satisfy the increasing need for higher bandwidth.

Another great feature of QSFP-DD is that its system will be backwards compatible, allowing them to support existing QSFP modules and provide flexibility for end users and system designer. This means the data center could save a considerable sum of money in the future upgrading.

Future and Present

The appearance of QSFP28 transceiver has changed the regular development road map of Ethernet. The regular upgrade road is 10G to 40G and then 100G. While the QSFP28 transceiver has changed it from 25G directly to 100G. The road map of this QSFP-DD is also drawing our attention. It is predicted that it will become a useful family of modules for the industry with application at greater than 400G. Meanwhile, there is no efforts underway to define these new speeds but it is expected that QSFP-DD will have a roadmap that supports.

qsfp28 transceiver

Any way, no matter where the QSFP-DD lead our Ethernet to, it is good news for our future networking system. The creating of this new module will still need some time. For now, many data centers are considering about upgrading their data center with 100G QSFP28 transceivers. And there are a variety of switches which support QSFP28 interfaces on the market. However, 100G QSFP28 transceiver is still not cheap in the current market. For example, the price of a 100GBASE-SR4 QSFP28 transceiver is generally more than $2000.00. However, in FS.COM, supported by OEM, the price is much more favorable. A 100GBASE-SR4 QSFP28 transceiver only cost $650.00 in FS.COM. The following chart is detailed information of 100G QSFP28 transceivers in FS.COM.

FS P/N Form Type Data Rate Wavelength Max Cable Distance Interface Cable Type DOM Support
100G QSFP28-SR4 QSFP28 103.1 Gbps 850 nm 100 m MPO (MTP12) MMF Yes
100G QSFP28-LR4 QSFP28 103.1 Gbps 1310 nm 10 km LC Duplex SMF Yes

For more details, please contact us at sales@fs.com or visit FS.COM.

Related Articles: 40GBASE QSFP+ AOC VS 40GBASE SR4 QSFP+ Transceiver

                              40G Transceiver Module: QSFP+ Module And CFP Module

What 2016 Optical Interconnection Hardware Market Will Be Like?

2016 optical interconnection hardware market trend

2015 is a harvest year to many vendors in optical communication. According to the research “Optical Network Hardware Tracker” by IHS, the global optical network market has increased 3 percent to $ 12.5 billion in 2015. Even, optical interconnection hardware market, which usually has the most fierce competition, also increased in 2015 driven by the whole industry. Will this tendency be kept in 2016 for optical interconnection hardware market?

Needs Drive the Market

Firstly, the insight of optical interconnection hardware market in last year should be given. In 2015, optical growth is greatly driven by the increasing needs for higher Ethernet speed. This is because the application of advanced technologies like Cloud, Internet of Things, and virtual data center. In addition, the deployment of projects like FTTH (fiber to the home) and 4G network also promoted the optical interconnection hardware market. It is clear that these applications and projects will still be the largest driver of the optical interconnect market in 2016. The most possible trends of optical interconnection hardware market could be concluded by three keywords: high speed, compatible and high density.

High Speed—Breakout Year of 100G

High speed is one of the keywords of this industry, and for 2016, it still plays an important role. It is clearly proved by the market needs that higher Ethernet speed is the irresistible trend. Although not many data centers have taken the lead to migration to 40/100G, the 40G and 100G will be the key growth segment of the market in the next few years according to the research by IHS. As shown in the following picture, the 100G market is predicted to grow 262 percent from 2015 to 2016. Inspecting the 2015 market signals, 2016 might be the breakout year of 100G. Fiberstore as the leading provider in optical communication has already launched 100G interconnection products including 100G transceiver and DAC (direct attached cable).

IHS global network market prediction

Compatible—More Economical Choices for Customers

An important reason why so many data centers and enterprise networks slow down the 40/100G migration plan, is the cost. For example, almost every data center needs optical transceivers and DAC for interconnection. And these products must be compatible from the switches. However, the switch market has already been monopolized by large vendors like Cisco. And the original brand 100G optical transceivers and DACs are usually very expensive. Luckily, vendors like Fiberstore can provide full series optical transceivers with a lifetime warranty, fully compatible with networking kit. What’s more these products are much cheaper than the original brand ones and have the same performance. These third party transceivers offer customers more choices with lower prices, which is very likely to promote the optical interconnection market, especially, for 100G products.

High Density—Urgent Problem

High Ethernet speed means more devices and cables should be deployed in data center where the space is usually limited. Enlarging the size of a data center is a good method, however, it will cost a lot. Except the investment for more room, the invest for maintenance and cooling also cannot be ignored. Thus, increasing the port and cabling density would be the most economical and effective way for most data centers. In the past years, small form factor optics, high density network rack system and MPO products are applied to increase the cabling and port density. In 2016, Fiberstore innovatively provides high density LC and MPO patch cords with push-pull tabs which can increase the cabling density and flexibility effectively for optical interconnection.

Facing the Competition

High speed, compatible, and high density three most obvious trends of 2016 optical interconnection hardware market. With the driver of the market needs, the market is very likely to keep the tendency of 2015. Growth of 100G interconnection products is predicted to be a key growth segment in 2016. However, where there is market there is competition. Seen the market signals, more vendors will join the competition of optical interconnection hardware market. By providing fully tested products and the most reasonable price of optical interconnection products, Fiberstore is ready and willing to face the challenges and opportunities in 2016.