Another Point of Thought about Fiber Optics Which Take WDM as an Example

We usually defined unfamiliar things as mystical, or difficult to understand but must be associated with the creation of that which is not familiar and already understood. In fact, I think that the familiar thing or regular thing you often do it. Maybe you do not really understand it completely. You just know what you need it to do. For example, when you go up early to work and ready to go to have a shower, Do you know all the things that had to happen for that hot water to come out of the shower? Possiblely not, you just know that once you turn on the switch, you will have a warm shower. Have a think of all the happened things in a normal day, you may not have second though because they are so familiar. Turn on the light, Watch TV, have a call, send an email and so on.

This always makes me think about that when a new technology is brought in the daily life, we always keep evasive attitude towards it, and the improvements of benefits and so many converiences it brings to our daily life. Well, I set the fiber optics product as an example. WDM, wavelength division. Related product: 8 channel cwdm multiplexer. See the figure. They have a similar feature is that people all used it but they are not aware that they are. Well, if you ask me about what the optical wavelength division multiplexing is, I will be glad to tell you the answer in a special way.


While in the copper cabling, if you want to get multiple signals on the same cable, it needs various of technical phenomena and acronyms which you may think it too boring. Such as ASK, CPFSK, DTMF, FSK, MFSK, OFDM and others. In fact, it just used in the old common telephone.

white light

While in the optical wavelength division multiplexing, it likes this. When go out and see the bright sunny day, the light from the Sun is basically white color. However, you take that light and shine it through a triangular glass prism and voila, you are presented with a rainbow of different colors! Well, those colors that are visible to us. We all know scientists divided it as Red, Orange, Yellow, Green, Violet, Indigo and Blue.  Like the figure. As you can see, visible light is actually just a sliver of the total light spectrum. In fiber optics, we use the light at the near infrared side starting at 850nm all the way out to the far infrared side around 1620nm. Each color is related to its particular wavelength. For example, the color green has a wavelength between 495nm Р570nm in the visible spectrum. So, in its simplest form of optical fiber, we take an electrical signal and convert it to a wavelength of light. Then we combine several different wavelengths (multiplexing), each carrying its own signal and transfer it over a glass fiber which so small as a human hair. After you form a habit that understands a technology from a familiar thing which you use it everyday, you will find many differences and more interests in your common life.

What Technology Should be Valued at the Next Generation Data Center Network

With the continual?expansion of business data center, the most several difficult problems for them are mainly about divided network environments, simple says, separate data network, separate storage network, separate calculation?network, protocols and there are different disadvantages of standards. Different networks need different cards, space, power and cooling infrastructures for their business. Interspersed interlaced network cabling may make many administrators feel dizzy. Aimed at different network environments, the company needs a professional technical team to support, manage, maintenance, these problems all block the forward developments of data center, let alone meet the future of cloud computing.?The figure shows?modern data center.

Modern data center

You may ask, what qualities we are taken for the next generation data center networks? Now we can see the characteristics, such as simplicity, virtualization features, can accommodate the expansion of the size of the data center, support higher bandwidth, low latency, non-blocking and so on. But as for these features, mainstream network equipment vendors aimed the advantages of their products and solutions to this goal, so if there is an architecture able to support these features do? The answer is yes, unified architecture (Unified Fabric), regardless of Cisco UCS. Brocade VCS, juniper3-2-1 plan, H3C’s unified fabric, also exist Unified Fabric. This page we just say two points.

The key technology under Unified Architecture (Unified Fabric)

Gigabit Ethernet

With the reduction of gigabyte networks at the server connections, Gigabit Ethernet share is rising, which maily due to the growth in the enterprise data center network traffic.In fact, with the 40G / 100G standard developments, it is sure that Gigabit Ethernet replacing the gigabyte networks, the birth of the Gigabit sfp+ transceiver?standard which has low power, sfp+ direct attach cable?can be achieved in the case of low-cost Gigabit Ethernet. And just mainstream might not be enough, the following what I will be introduced to toward greater success.

FCoE protocol (Fiber Channel over Ethernet)

FCoE is one of the most shining technology data center network currently, any vendors have to talk about the technology of the developments of their products. FCoE refers to the Fiber Channel over Ethernet, it can insert fiber channel information into the Ethernet packet, so that the Fiber Channel storage devices -SAN server requests and data can be transmitted over an Ethernet connection, without the need for a dedicated Fiber Channel fabric . Its main benefits: First, make storage traffic and network traffic share the same Ethernet cable and a fusion of the card, simplifying management and reducing energy consumption. Second, provide the same performance with optics. The third is the ability to integrate effectively existing SAN.

Finally, you know, now i work for Fiberstore and in our website, we can provide the most advanced technology and the most effective way to help you solve the fiber optics problems, and at the same time, we also provide all the fiber optic products, such as 10 100 1000base t ethernet sfp, qsfp 4x10g aoc7m and glc fe 100lx rgd to buy. If you are interested, take a decision for it.