Things to Know About 40G QSFP+ AOC

As the demand for reliable, efficient and fast data transfer continues to heat up, the need for a more capable alternative to traditional copper cables also grows parallel with it. Achievements in network technologies have ushered in a new era with higher speed connectivity, thus migration from 10G to 40G nowadays is no longer a fresh topic but an irresistible trend. The active optical cable (AOC), since it was introduced in 2007, has been considered to be an optimum option for 40G support connectivity. This article will explain some vital elements in related to 40G QSFP+ AOC in detail.

40G QSFP+ AOC Description

40G QSFP+ AOC, as the name indicates, is a type of active optical cable used for 40G networks and applications. It is terminated with 40G QSFP+ connector on one end, and on the other end, it can be terminated with QSFP+ connector, SFP+ connector or LC connector etc. The QSFP+ optical modules provide four parallel full-duplex transmit and receive channels, each capable of 10Gbps operation and in total 40Gbps aggregate bandwidth of at least 100 m over multimode fiber.

With a bit error rate (BER) exponentially better than that of copper cables, along with being lighter and with a tighter bend angle, AOCs have since become mass-produced for data centers and server rooms all over the world.

40G QSFP+ AOC

How Does AOC Work?

The feature that distinguishes AOCs from traditional types of connectors is the fact that data passes through optical fiber lanes as opposed to copper, while maintaining a traditional electrical connectivity interface. Besides, optical cable possess a greater capability to carry a high-speed signal over longer distances than any other types of cable, without compromising signal integrity. Not to mention that it ensures data security and non-conductivity.

All active optical cables are comprised of four main functional parts:

1. High-density connector: The form factor of the connector equipped to either side of the optical fiber cable can come in many variants to fulfill a variety of functions, whether in QSFP+ format for data centers and server rooms or HDMI format for consumer entertainment.

2. Ribbon optical fiber cable: A multi-channeled optical fiber cable (that could come in multi or single-mode) ranging from 1 to 100 meters in length.

3. Full-duplex AOC transceiver: An optical transceiver is embedded into either side of the optical cable, two optical-electrical and electrical-optical converters on either side of the cable.

4. MPO optical connector: A connector that is permanently fixed to the form factor shell and fiber, designed to shield the optical interface from external interference.

Diagram of AOC

Comparison Between 40G QSFP+ AOC and QSFP+ Optics

Currently, 40G QSFP+ AOC is becoming increasingly popular in data centers, especially those are supposed to accommodate massive and high density bandwidth. Then, how dose 40G QSFP+ AOC differ from standard QSFP+ optics? And what we can benefit from employing 40G QSFP+ AOC? Here, we simply make a comparison between them from the perspective of total cost, insertion loss and return loss.

Cost—by adopting 40G QSFP+ AOC to your existing infrastructure, there is no need to use extra fiber patch cables. So, it generally costs less when compared with QSFP+ optic modules. Let’s just take QSFP+ to QSFP+ AOCs for example, it is usually employed to very short distance data transmission while offers a rather cost-effective way to establish 40G links between QSFP ports of switches within racks and across adjacent racks. Moreover, with 40G QSFP+ AOC, you will be free from cleaning the optical connectors as well as from termination plug and test when troubleshooting, which is time-saving and cost-efficient.

Insertion loss and return loss—when considering the repeatability and interchangeability performances within the same transmission distance, 40G QSFP+ AOC is superior to that of QSFP+ optics. Because when different fiber optic patch cables plug into the module, it will have the different insertion loss and return loss, which is the same even for the same module. However, an AOC is more stable and has better swing performance than other QSFP+ optics in this situation.

Conclusion

The 40G QSFP+ AOC is a high performance, low power consumption integrated cable for short-range multi-lane data transmission and interconnect applications. It has been widely used in high-density connectivity data centers to upgrade the current network equipment. 40G QSFP+ AOC also offers an optimum solution for high-performance computing and storage applications. So one can rely on 40G QSFP+ AOCs when designing for higher speed and more reliable network connectivity. For more detailed products information and interconnect solutions, please visit www.fs.com.

LC Uniboot Fiber Patch Cable – An Optimum Cable Management Option

With the ever lasting advancement of networking technology, there comes an increasing demand for data centers to accommodate higher density cables and more bandwidth. However, it is generally acknowledged that data centers are often with limited space. Then how to handle those massive cables in such circumstances becomes a vital issue. This article will introduce the LC uniboot fiber patch cable, an optimum alternative for cable management that is designed to deliver maximum connectivity performance.

LC Uniboot Fiber Patch Cables Description

LC uniboot fiber patch cable consists of two LC connectors that wrapped by a common housing with one boot. It is terminated on a single, round, two-fiber cable to achieve duplex data transmission. LC uniboot patch cable allows for up to 68% savings in cabling volume due to a compact design, and it can ensure easier maintenance and operability with tool-less field reversible polarity and color identification. All the features presented by LC uniboot fiber patch cable make it an ideal option for high density network environment.

LC uniboot fiber patch cable

Comparison Between LC Uniboot Fiber Patch Cables and Standard Ones

LC fiber optic connectors offer higher density and better performance in most environments when compared with other fiber optic connectors, making it a reliable and popular choice for many applications and equipment. This can explain why uniboot fiber patch cables are terminated with specially designed LC connectors. The innovative LC uniboot fiber patch cable, with its unique structure and compact design, performs even better than standard LC fiber patch cables in high density cabling environment. Here, we present the obvious differences between the LC uniboot patch cable and the standard LC fiber patch cable in the following picture.

LC uniboot fiber patch cable vs.standard fiber patch cable

Features of LC Uniboot Fiber Patch Cables

Genarally, there are three primary features concerning the uniboot fiber patch cables:

Adjustable Pitch—the unique style of the clip allows the LC Connectors to easily adjust for the increasing demand of a 5.25 pitch, as well as the standard 6.25 pitch. Eliminating the requirement for hybrid patch cables.

Reverse Polarity—with a few simple steps, the connectors polarity of the LC uniboot fiber patch cables can be reversed at will without connector re-termination.

Quick Release Latch—the latch of LC uniboot fiber patch cable allows for the quick and easy release of this connector from the adapter panel, which makes great sense in the growing trend of high density applications.

What LC Uniboot Fiber Patch Cables Can Achieve?

As we have mentioned previously, LC uniboot fiber patch cables are especially vital to space sensitive data centers and high density cabling environments, so what exactly we can benefit from deploying LC uniboot fiber patch cables?

Cable Congestion Reduction

With two fibers for duplex transmission firmly enclosed in a single cable, LC uniboot fiber patch cable effectively cuts down the cable count up to 50% compared with the standard LC duplex patch cords. Thus the space requirement of cabling can be significantly reduced by it, naturally result in less chance of cable congestion in data centers.

Effective Polarity Reversal

Changing the polarity of a standard LC duplex fiber patch cable may be annoying to many data center operators, especially when there happens to be a high density cabling system. This is sort of a time and energy consuming task since some minor mistakes could lead to various troubles. However, with LC uniboot patch cable, the polarity replacement can be much easier even without any additional tools. In terms of different types of LC uniboot patch cables, the polarity reversal steps may vary. We just illustrate two most used ones as follows.

LC uniboot polarity reversal

Conclusion

To address the increasing demand for high density applications and smaller fiber cable, the LC uniboot fiber patch cable is designed to help cut down cabling space and provide more effective polarity reversal solution, and to streamline cable management and logistics. Without doubt, LC uniboot fiber patch cable is the savior of popularized high-density cabling system. Hope this article could help you to choose the right LC uniboot patch cable for your applications, and for more products information and solutions, please visit www.fs.com.