Fiber Optic Adapter | DK Photonics Blog

5G and Fiber Optics: The Next Digital Revolution

We all are hearing about the onset of 5G networks. 5G comes with the promise to connect people and things via intelligent networks and apps and transform the way we live and work. All of this is going to generate massive amounts of data and 5G is the solution to achieve the highest possible performance.

However, before 5G becomes possible around the world, we need to build the network infrastructure to accommodate billions of devices and enormous amounts of traffic that will be sent over the network.

In this blog, we will see how 5G spurs the demand for fiber optics even more. What role do passive optical components play in making 5G possible?

How does 5G spur the demand for fiber optics even more?

An increasing number of new applications and users demand high data rates. It increases data traffic at a rate of more than 50 percent per year per head. Besides, the emergence of new technologies, such as Internet of Things (IoT) and virtual reality (VR) will accelerate the demand for high data rates more than ever. To address this challenge, 5G is being introduced.

5G networks use different optical technologies and concepts, such as a radio-over-fiber (RoF) network, passive optical network (PON), light fidelity (Li-Fi), optical millimeter wavelength bridge, etc. to achieve high data rate and capacity.

A Passive Optical Network (PON) is a fiber optic network to deliver broadband network access to end-customers. It uses ans architecture that implements a point-to-multipoint topology in which a single optical fiber serves multiple endpoints by utilizing passive optical splitters – one of the most common passive optical components in the fiber optic communication industry.

Besides, an optical network utilizes a range of optical passive components, including branching components, such as DWDMs, optical isolators, optical circulators, and optical filters.

Since 5G needs Passive Optical Networks to meet a variety of challenges, it is natural for optical passive components to increase in demand.

How do optical networks help 5G implementation?

Optical network technologies are emerging as one of the most promising solutions to address and eliminate different challenges encountered in 5G communication networks. The main challenge of the 5G network is to facilitate access to information when, where, and in what format we need it. Optical and wireless technologies are being used as pillars in 5G implementation.

While optical fiber cannot go everywhere, it provides a huge amount of bandwidth where it can be implemented, which solves the speed and capacity problems in the 5G network. According to experts, the best approach to make 5G possible is to integrate an optical fiber network and a wireless network. This approach is called Radio over Fiber (RoF) network.

Besides, in addition to the millimeter wave band of wavelength 1mm – 10mm, the optical wave band from wavelength 390nm to 750nm is also considered very promising for 5G communication. Flex-grid optical network is also emerging as a promising network technology for 5G communication systems, which uses sliceable bandwidth variable transceivers, bandwidth variable optical cross connectors, optical splitters and combiners, and bandwidth variable wavelength select switches.

If you need optical passive components to implement passive optical networks for 5G, contact DK Photonics now.

Introduction of Fiber Optic Coupler with its Benefits & Classification

A fiber optic coupler is an indispensable part of the world of electrical devices. Without these no signals would be transmitted or converted from inputs to outputs. This is the reason these are so important thereby this article discussed about these, introduction, classification and benefits in detail.

Fiber Optic Coupler is an optical cog that is capable of connecting single or multiple fiber ends in order to permit the broadcast of light waves in manifold paths. This optical device is also capable of coalescing two or more inputs into a single output while dividing a single input into two or more outputs. In comparison to a connector or a splice, the signals may be even more attenuated by FOC i.e. Fiber Optic Couplers; this is due to the division of input signal amongst the output ports.

Types of Fiber Optic Coupler

Fiber Optic Couplers are broadly classified into two, the active or passive devices. For the operation of active fiber coupler an external power source is required, conversely no power is needed when it comes to operate the passive fiber optic couplers.

Fiber Optic Couplers can be of different types for instance X couplers, PM Fiber Couplers, combiners, stars, splitters and trees etc. Let’s discuss the function of each of the type of the Fiber Optic Couplers:

Combiners: This type of Fiber Optic Coupler combines two signals and yields single output.

Splitters: These supply multiple (two) outputs by using the single optical signal. The splitters can be categorized into T couplers and Y couplers, with the former having an irregular power distribution and latter with equal power allocation.

Tree Couplers: The Tree couplers execute both the functions of combiners as well as splitters in just one device. This categorization is typically based upon the number of inputs and outputs ports. These are either single input with a multi-output or multi-input with a single output.

PM Coupler: This stands for Polarization Maintaining Fiber Coupler. It is a device which either coalesces the luminosity signals from two PM fibers into a one PM fiber, or splits the light rays from the input PM fiber into multiple output PM fibers. Its applications include PM fiber interferometers, signal monitoring in its systems, and also power sharing in polarization sensitive systems etc.

Star Coupler: The role of star coupler is to distribute power from the inputs to the outputs.

Benefits of Fiber Optical Couplers

There are several benefits of using fiber optic couplers. Such as:

Low excess loss,
High reliability,
High stability,
Dual operating window,
Low polarization dependent loss,
High directivity and Stumpy insertion loss.

The listed benefits of Fiber Optical Couplers make them ideal for many applications for instance community antenna networks, optical communication systems and fiber-to-home technology etc.

Optical Fiber In-line Polarizer & its Fine Features

The significance and value of Optical fibers don’t need any explanations or specifications in the world of electronics and technology. These devices are no doubt the tiny part but are equally important as well as requisite for the effective / efficient working of the machinery and electronic. When we talk about optical fiber In-line polarizer these are the cogs which can never be overlooked.

Optical Fiber In-line Polarizer

Low cost optical fiber In-line polarizer is the device to convert unpolarized light into linearly polarized light. It encompasses both, input as well as output as one input of single mode fiber and one output with polarization maintaining fiber. It can easily be connected conveniently into the optical systems through pigtailed input / output connectors.

Now let’s discuss the fine features of In-line Polarizer:

Low insertion loss: in telecommunications, the loss of signal power coming from the insertion of a device into the optical fiber is generally referred to as insertion cost. The insertion cost of the In-line polarization is stumpy and quite lesser than the other similar devices.

High extinction ratio: the polarizer especially, the In-line polarizer usually have the high extinction ratio i.e. the ratio of the two optical power levels of a digital signal produced by an ocular source.

High return loss: The optical fiber polarizer generates high return loss i.e. the loss of power in the signal reflected / returned by a discontinuity in a broadcast line or ocular fiber.

Compactness and light weight: Yet another beneficial feature of an In-line Polarizer is that it is quite compact as well as light weighted. This helps in the placement and execution of the appliance. Its light weight helps it work easily and effortlessly.

High stability and reliability: In-line polarizer is always recommended as it is quite stable as well as reliable. Unlike all other types of polarizers, the in-line polarizer has higher stability. This is the reason why companies and industries trust these.

Beyond all, the optical fiber In-line polarizer is available in market at low costs. There are several organizations which offer and sell the high quality optical fiber solutions at competitive prices and ensure you an effective as well as a durable working.

So, whenever you seek the high quality optical fiber In-line Polarizer, or decide to buy them, make sure you choose a copper-bottomed company to get the best products and high quality services as well as high class solutions at competitive prices!

Optical Fiber In-line Polarizer

Now let’s discuss the fine features of In-line Polarizer:

Low insertion loss: in telecommunications, the loss of signal power coming from the insertion of a device into the optical fiber is generally referred to as insertion cost. The insertion cost of the In-line polarization is stumpy and quite lesser than the other similar devices.

High extinction ratio: the polarizer especially, the In-line polarizer usually have the high extinction ratio i.e. the ratio of the two optical power levels of a digital signal produced by an ocular source.

High return loss: The optical fiber polarizer generates high return loss i.e. the loss of power in the signal reflected / returned by a discontinuity in a broadcast line or ocular fiber.

Compactness and light weight: Yet another beneficial feature of an In-line Polarizer is that it is quite compact as well as light weighted. This helps in the placement and execution of the appliance. Its light weight helps it work easily and effortlessly.

High stability and reliability: In-line polarizer is always recommended as it is quite stable as well as reliable. Unlike all other types of polarizers, the in-line polarizer has higher stability. This is the reason why companies and industries trust these.

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Testing Fiber Optic Splitters Or Other Passive Devices

A fiber optic splitter is a device that splits the fiber optic light into several parts by a certain ratio. For example, when a beam of fiber optic light transmitted from a 1X4 equal ratio splitter, it will be divided into 4-fiber optic light by equal ratio that is each beam is 1/4 or 25% of the original source one. A Optical Splitter is different from WDM. WDM can divide the different wavelength fiber optic light into different channels. fiber optic splitter divide the light power and send it to different channels.

Most Splitters available in 900µm loose tube and 250µm bare fiber. 1×2 and 2×2 couplers come standard with a protective metal sleeve to cover the split. Higher output counts are built with a box to protect the splitting components.

Testing a coupler or splitter (both names are used for the same device) or other passive fiber optic devices like switches is little different from testing a patchcord or cable plant using the two industry standard tests, OFSTP-14 for double-ended loss (connectors on both ends) or FOTP-171 for single-ended testing.

First we should define what these passive devices are. An optical coupler is a passive device that can split or combine signals in optical fibers. They are named by the number of inputs and outputs, so a splitter with one input and 2 outputs is a 1×2 fiber splitter, and a PON splitter with one input and 32 outputs is 1×32 splitter. Some PON splitters have two inputs so it would be a 2X32. Here is a table of typical losses for splitters.

Splitter-Ratio

Important Note! Mode Conditioning can be very important to testing couplers. Some of the ways they are manufactured make them very sensitive to mode conditioning, especially multimode but even singlemode couplers. Singlemode couplers should always be tested with a small loop in the launch cable (tied down so it does not change and set the 0dB reference with the loop.) Multimode couplers should be mode conditioned by a mandrel wrap or similar to ensure consistency.

Let’s start with the simplest type. Shown below is a simple 1X2 splitter with one input and two outputs. Basically, in one direction it splits the signal into 2 parts to couple to two fibers. If the split is equal, each fiber will carry a signal that is 3dB less than the input (3dB being a factor of two) plus some excess loss in the coupler and perhaps the connectors on the splitter module. Going the other direction, signals in either fiber will be combined into the one fiber on the other side. The loss is this direction is a function of how the coupler is made. Some couplers are made by twisting two fibers together and fusing them in high heat, so the coupler is really a 2X2 coupler in which case the loss is the same (3dB plus excess loss) in either direction. Some splitters use optical integrated components, so they can be true splitters and the loss in each direction may different.

optical coupler

So for this simple 1X2 splitter, how do we test it? Simply follow the same directions for a double-ended loss test. Attach a launch reference cable to the test source of the proper wavelength (some splitters are wavelength dependent), calibrate the output of the launch cable with the meter to set the 0dB reference, attach to the source launch to the splitter, attach a receive launch cable to the output and the meter and measure loss. What you are measuring is the loss of the splitter due to the split ratio, excess loss from the manufacturing process used to make the splitter and the input and output connectors. So the loss you measure is the loss you can expect when you plug the splitter into a cable plant.

To test the loss to the second port, simply move the receive cable to the other port and read the loss from the meter. This same method works with typical PON splitters that are 1 input and 32 outputs. Set the source up on the input and use the meter and reference cable to test each output port in turn.

What about the other direction from all the output ports? (In PON terms, we call that upstream and the other way from the 1 to 32 ports direction downstream.) Simply reverse the direction of the test. If you are tesing a 1X2 splitter, there is just one other port to test, but with a 1X32, you have to move the source 32 times and record the results on the meter.

fiber-splitter

What about multiple input and outputs, for example a 2X2 coupler? You would need to test from one input port to the two outputs, then from the other input port to each of the two outputs. This involves a lot of data sometimes but it needs to be tested.

There are other tests that can be performed, including wavelength variations (test at several wavelengths), variations among outputs (compare outputs) and even crosstalk (put a signal on one output and look for signal on other outputs.)

Once installed, the splitter simply becomes one source of loss in the cable plant and is tested as part of that cable plant loss for insertion loss testing. Testing splitters with an OTDR is not the same in each direction.

Other Passive Devices

There are other passive devices that require testing, but the test methods are similar.

Fiber optic switches are devices that can switch an input to one of several outputs under electronic control. Test as you would the splitter as shown above. Switches may be designed for use in only one direction, so check the device specifications to ensure you test in the proper direction. Switches may also need testing for consistency after multiple switch cycles and crosstalk.

Attenuators are used to reduce signal levels at the receiver to prevent overloading the receiver. There is a page on using attenuators that you should read. If you need to test an attenuator alone, not part of a system, use the test for splitters above by using the attenuator to connect the launch and receive cables to see if the loss is as expected.

Wavelength-division multiplexers can be tricky to test because they require sources at a precise wavelenth and spectral width, but otherwise the test procedures are similar to other passive components.

Fiber optic couplers or splitters are available in a wide range of styles and sizes to split or combine light with minimal loss. All couplers are manufactured using a very simple proprietary process that produces reliable, low-cost devices. They are physically rugged and insensitive to operating temperatures. Couplers can be fabricated in custom fiber lengths and/or with terminations of any type.

DK Photonics – www.dkphotonics.com specializes in designing and manufacturing of high quality optical passive components mainly for telecommunication, fiber sensor and fiber laser applications,such as PLC Splitter, WDM, FWDM, CWDM, DWDM, OADM,Optical Circulator, Isolator, PM Circulator, PM Isolator, Fused Coupler, Fused WDM, Collimator and Polarization Maintaining Components, Pump Combiner, High power isolator, Patch Cord and all kinds of connectors.

Market Forecast–MPO Connectors in 40/100GbE – DK Photonics

MPO fiber optic connectors used in North American 40/100GbE communication links are forecast to increase at a rate of 49.8% per year through 2018…

Aptos, CA (USA) – August 20, 2014 —ElectroniCast Consultants, a leading market & technology forecast consultancy addressing the fiber optics communications industry, today announced the release of their market forecast and analysis of the use of MPO fiber optic connectors in 40 gigabit Ethernet (GbE) and 100GbE Standard communication network links. MPO is the industry acronym for “multi-fiber push on.”

“Applications such as video, virtualization, cloud computing, switching/routing and convergence are driving the need for bandwidth expansion in data centers, 4G/LTE (wireless) networks, and other deployments. We continue on the path of gradually migrating from 1G to 10G to 40G and 100G and eventually beyond; and the MPO connector is a key component in 40/100GbE network links, ” said Stephen Montgomery, director of the fiber optics components group at ElectroniCast.

The use of MPO fiber optic connectors in North American 40GbE and 100GbE networks is expected to reach $28 million in 2014, an increase of 84% over last year (2013). The use of 40/100GbE MPO connectors in North American is forecast to increase at annual rate of 49.8% per year over the 2013-20189 timeframe covered in the ElectroniCast market forecast. Market forecast data in the market study refers to consumption (use) for a particular calendar year; therefore, this data is not cumulative data.

The market forecast is segment by the use of single-mode and multimode 12-fiber and 24-fiber MPO connectors, and further broken-out by the use of connectors in 40G and the connectors used in 100G.

According to the market study, the North American 40/100GbE MPO connector market expansion will be dominated by the 12-fiber multimode MPO connectors, increasing at an average annual growth rate of 48.5 percent during the forecast period.

DK Photonics – www.dkphotonics.com specializes in designing and manufacturing of high quality optical passive components mainly for telecommunication, fiber sensor and fiber laser applications,such as PLC Splitter, WDM, FWDM, CWDM, DWDM, OADM,Optical Circulator, Isolator, PM Circulator, PM Isolator, Fused Coupler, Fused WDM, Collimator, Optical Switch and Polarization Maintaining Components, Pump Combiner, High power isolator, Patch Cord and all kinds of connectors.

Huawei, Rostelecom collaborate on FTTH distribution boxes—DK Photonics

Huawei says it has collaborated with Russian service provider Rostelecom to develop floor distribution boxes (FDBs) for use in Rostelecom’s flexible fiber to the home (FTTH) deployments. The FDBs will help improve the efficiency of the operator’s FTTH deployments, particularly in sparsely populated areas, Huawei says.

Rostelecom is under a mandate from the Russian government to connect 13 million CWDM Module users by 2015, Huawei says. This task is complicated by the fact that much of the operator’s footprint covers rural areas.

To improve deployment efficiency, Huawei says it recommended what it calls “the thin-covered network deployment model.” According to the model, fiber-optic networks are constructed to user access points and the FDBs, the latter of which are used as the interface between the outside plant and the inside plant. As the network expands and more users are connected, pre-made drop cables can be used for plug-and-play, quick service provisioning.

The customized FDBs were designed for success-based deployment. Rostelecom can deploy FDBs that provide access to a single user, then add connections as many as four or eight users as take rates improve. Technicians can complete the expansion in one minute without the use of tools, Huawei says.

Huawei and Rostelecom will further collaborate on other network elements, including the closure, optical splitter, and fiber distribution terminal (FDT), the technology provider added.

For more information on FTTx products, visit the DK Photonics Website.

DK Photonics – www.dkphotonics.com specializes in designing and manufacturing of high quality optical passive components mainly for telecommunication, fiber sensor and fiber laser applications,such as PLC Splitter, WDM, FWDM, CWDM, DWDM, OADM,Optical Circulator, Isolator, PM Circulator, PM Isolator, Fused Coupler, Fused WDM, Collimator, Optical Switch and Polarization Maintaining Components, Pump Combiner, High power isolator, Patch Cord and all kinds of connectors.

Optical Isolators Global Market Forecast-DK Photonics

According to ElectroniCast, optical isolator value in Telecommunications is forecast to increase 19.6% this year…

Aptos, California (USA) – April 29, 2014 —ElectroniCast Consultants, a leading market research & technology forecast consultancy addressing the fiber optics communications industry, today announced the release of a new market forecastof the global consumption of optical isolators in optical communication and specialty applications.

According to ElectroniCast, the worldwide optical isolator consumption was led by Telecommunication applications in 2013 with a 70 percent market share or $349.7 million, and is forecasted to increase 19.6 percent in value to $418.2 million this year (2014). Market forecast data in this study report refers to consumption (use) for a particular calendar year; therefore, this data is not cumulative data.

Optical isolators are devices that allow light to be transmitted in only one direction. They are most often used to prevent any light from reflecting back down the optical fiber, as this light would enter the source and cause backscattering and feedback problems. This is especially important for high data rate transceivers and transponders, or those devices requiring long span lengths between transceiver pairs. Optical feedback degrades signal-to-noise ratio and consequently bit-error rate.

“Continuing demand for upgrading communication networks to accommodate rapidly increasing bandwidth requirements will drive the steady consumption of optical fiber links. Optical isolators are used in with high-speed transmitters that are required to transmit longer distances and/or multiple wavelength transmitters,” stated Stephen Montgomery, Director of the Fiber Optics Components group at ElectroniCast Consultants.

Optical isolators are not widely used in Private Enterprise applications; however, worldwide use of fiber optic isolators in Cable TV controlled device deployments are forecast to grow significantly in value at an annual rate of 8.8 percent (2013-2018), as optical fiber is deployed closer to the home driven by multi-media applications.

Optical isolator units are used in a variety of Military/Aerospace applications requiring rigorous testing and harsh environment fiber optic (HEFO) certification to ensure reliability and performance. Laser-based fiber optic technology incorporating optical isolators are used in a wide variety of air, sea, ground, and space applications.

A major user-group within the Specialty application category is Laboratory/R&D. Optical isolators are used for noise reduction, medical imaging, pulse selection for mode locked lasers, sensing, regeneration switches, disc master, optical trapping, phase shifters, frequency modulation spectroscopy and general shuttering. The optical isolators are also used in sensing for industrial, structures and other many other communication product-oriented manufacturing/test/R&D uses.

“During the forecast period (2013-2018), bandwidth expansion demands will push for new network links, incorporating Metro Core, Metro/Access, Long Haul, Optical Fiber Amplifiers, WDM, OADM and other system-based deployments, which incorporate optical isolators,” Montgomery added.

The American region held the lead in terms of relative market share consumption value of optical isolators in 2013, with nearly 43.4 percent; however the American region is forecast to increase at a slower rate compared to the other regions (2013-2018). The Asia Pacific region (APAC) is forecast to increase in worldwide market share from 39.7 percent in 2013 to with 53.7 percent in 2018. The Europe, Middle East, African region (EMEA) is forecast to remain in the third-place position, however, increase at a faster annual pace versus the American region.

According to ElectroniCast, the American Region leads optical isolator consumption value…

2013 – Optical Isolator Global Value Market Share (%),

By Region, $498 Million

Source: ElectroniCast Consultants

Optical Isolator Global Value Market Share (%)

DK Photonics – www.dkphotonics.com specializes in designing and manufacturing of high quality optical passive components mainly for telecommunication, fiber sensor and fiber laser applications,such as PLC Splitter, WDM, FWDM, CWDM, DWDM, OADM,Optical Circulator, Isolator, PM Circulator, PM Isolator, Fused Coupler, Fused WDM, Collimator, Optical Switch and Polarization Maintaining Components, Pump Combiner, High power isolator, Patch Cord and all kinds of connectors.

The Ion exchange process and the Glass choice of the PLC Splitter Chip

Along with development of the optical communication, its good environmental stability and compatibility with fiber, began to widely used optical communication components manufacturing.( Such as self-focusing lens, optical divider, optical amplifier, etc), And extend to the sensing area, (such as: all kinds of biological and chemical sensors , current sensors which is based on fading light waves, etc.)

Glass ion-exchange technology has several one hundred years long history, Its earliest used to change the light absorption characteristics of glass, glass coloring,then, the technology is widely used in processing on the surface of the glass surface (such as touch screen add hard processing). Along with development of the optical communication, its good environmental stability and compatibility with fiber, began to widely used optical communication components manufacturing.( Such as self-focusing lens, optical divider, optical amplifier, etc), And extend to the sensing area, (such as: all kinds of biological and chemical sensors , current sensors which is based on fading light waves, etc.)

Current mainstream technology of PLC Splitter chip includes: PECVD technology, flame hydrolysis technology, glass ion exchange technology. Glass principle and technological process of ion exchange technology as shown in figure 1,figure 2. The main process flow flame hydrolysis technology shown in figure 3. The process characteristics of contrast see table 1. From years of use and reliability experiment, the two technologies are used in mass production and the performance is good.The features of PECVD/flame hydrolysis technique are that equipment and raw materials is the existing material, but its process is very complicated, the production cycle is long, the processing tolerance is small; Glass ion exchange technology is characterized by equipment and raw materials need special customized, but its technology is relatively simple, high production efficiency, process tolerance is larger, the chip cost is relatively low.

DK Photonics – www.dkphotonics.com specializes in designing and manufacturing of high quality optical passive components mainly for telecommunication, fiber sensor and fiber laser applications,such as PLC Splitter, WDM, FWDM, CWDM, DWDM, OADM,Optical Circulator, Isolator, PM Circulator, PM Isolator, Fused Coupler, Fused WDM, Collimator, Optical Switch and Polarization Maintaining Components, Pump Combiner, High power isolator, Patch Cord and all kinds of connectors.

Application of optical communication is still broad prospects

Once the Nortel global leader in fiber optic communications during the Internet bubble in 2000, the money in the acquisition of a large number of optical communications research and the production of small and medium enterprises, the industry has been criticized in the subsequent bankruptcy of Nortel. In fact, Nortel grasp of technology trends, the direction is right, unfortunately, Nortel too hasty, global demand for optical communication was not to such an extent.

But now the situation is very different compared with around 2000. The rapid development of mobile Internet and the widespread popularity of smart mobile terminal equipment, being a huge challenge to the global telecommunications network capacity, transmission speed. The era of “data flood peak to optical communication technology has always been known by the transmission bit of new development opportunities and a huge space. Optical communication technology not only did not fall behind, the contrary, the optical communication industry chain, from fiber optic cable system equipment, terminal equipment to optical devices, a critical period in the comprehensive technology upgrade.

The field of optical communication is a noteworthy event, the National Development and Reform Commission recently organizing the preparation of strategic emerging industries key products and services Guidance Catalogue, which in conjunction with the relevant departments, the optical communication technology and product responsibility and selected emerging industries of strategic focus products.

In fiber optics, including FTTx G.657 optical fiber, broadband long-distance high speed large capacity optical fiber transmission with G.656 optical fiber, photonic crystal fiber, rare earth doped fiber (including ytterbium doped fiber, erbium doped fiber and thulium doped fiber, etc.) the laser energy transmission fiber, and has some special properties of new optical fiber, plastic optical fiber, polymer optical fiber is fully finalists. The upgrade of the fiber optic technology, will bring the data transmission capacity, distance, quality leap.

In the field of fiber access equipment, passive optical network (PON), wavelength division multiplexer (WDM),OLT and ONU on the list. Optical transmission equipment, especially the line rate of 40 Gbit/s, 100Gbit/s large capacity (1.6Tb/s and abobe) DWDM equipment, reconfigurable optical bifurcation Multiplexer (ROADM) wavelength division multiplexing system ran cross-connect (OXC) equipment, large-capacity high-speed OTN optical transport network equipment as well as packetized enhanced OTN equipment, PTN packet transport network equipment also impressively. These products are “broadband China” works to promote a powerful weapon; both long-distance backbone network, metropolitan area network or access network even close to the user’s “last mile” of these products will come in handy.

The major products are classified as strategic emerging industries in the field of optical devices, high-speed optical components (active and passive). This is the core and foundation of the field of optical communication technology, device development, the improvement of integration, function enhancement can bring significantly reduce the cost of system equipment and provide a performance boost.

At the same time, the annual OFC / NFOEC (fiber-optic communications exhibition) will be held in late March in California. This event will showcase the latest technology and research progress of the global optical component modules, systems, networks and fiber optic products, represents a new trend of development of optical communication technology.

100G for ultra-high-speed network technology is the current OFC hot one. 2012 100G technology on a global scale backbone network level scale application of 100G optical network applications will rapidly expand with the 100G device further mature. In the same time, the industry has also increased efforts to develop the 100G optical modules, silicon photonics technology pluggable multi-source agreement 100G CFP MSA CPAK optical module has been available. Outside the backbone network, 100G MAN application is the current one of OFC discussion topic.

The rise of cloud computing brings data center construction boom, 100G technology in the data center is a popular data center for high-speed pluggable optical devices is also a hot topic. Experts believe that photonic technology has a key role to play in the large enterprise data centers, but this is only a start, the size of the new cloud computing data center such as a warehouse, with more than 100,000 servers carrying the computing and storage resources, the required network bandwidth than PB level. These data centers only optical communications technology in order to achieve VCSEL (vertical cavity surface emitting lasers) and multi-mode fiber has played an important role, and will continue to introduce new fiber optic communication technology.