Browsed by
Tag: fiber optic network

Using CWDM Technology To Construct Cost-Effective Fiber Networks

Using CWDM Technology To Construct Cost-Effective Fiber Networks

The utilization of fiber optic cables for communication has opened up gates for communication multiplexing technologies that increase the capabilities at minimum costs. Coarse wavelength division multiplexing (CWDM) modulates different wavelength laser beams with multiple signals. Essentially, what this means is maximized utilization of a single fiber optic to deliver and get a large number of signals, minimizing costs for telecom companies. Companies simply employ the right optical amplifiers, multiplexers and demultiplexers to boost capacity from the fiber optic using CWDM technology.

In CWDM technology, it comes with an increase in channel space. This means requirement of less sophisticated and less costly transceiver devices. Operating in the same window of 1550 nm and making use of OH-free silica fibers, maximum efficiencies are achieved in channels 31, 49, 51, 53, 55, 57, 59 and 61. The channels are spaced 20 nm apart. DWDM spaces them 0.4 nm apart. Less precision optics minimizing cost, uncooled lasers with lower maintenance requirements can therefore be used in CWDM devices, operating in the region of 1470, 1490, 1510, 1530, 1550, 1570, 1590 and 1660nm. 18 different channels can be used with wavelengths as much as 1270 nm. For instance, a 8 channel CWDM includes 8 different CWDM channels. In addition to being economical, power consumption for laser devices used in CWDM technology is also far less.

CWDM signals cannot be transmitted long term but are ideal for applications inside a range of 60 km for example in a city as well as for cable tv networks allowing upstream and downstream signals. CWDM product is usually considered a low-cost alternative which is now widely used to replace the DWDM system. Due to the benefit of CWDM technology uses low cost lasers that don’t need cooling and low-cost passive filter. Moreover, if using CWDM technology, we can use low-cost and smaller transceivers such as CWDM 10Gig SFP+. However, because of relatively large CWDM channel spacing, so the system will reduce the number of available wavelengths, this also limits the system’s transmission capacity.

Related technologies are dense wavelength division multiplexing (DWDM) and conventional WDM. Conventional WDM use the 3rd transmission window with a wavelength of 1550nm, accommodating as much as 8 channels. DWDM is identical however with a higher density channel. Systems could use 40 channels, each at 100 GHz spacing or 80 channels spaced 50 GHz apart. A technology, the ultra dense WDM is capable of doing working in a spacing of just 12.5 GHz, allowing more channels. However, DWDM and WDM are much more expensive in contrast to CWDM.

A quantity of manufacturers offer all related CWDM multiplexer, demultiplexer and optical amplifier. Networking solution providers would be the right individuals to seek guidance for use of CWDM, DWDM or WDM technology. They perform entire installation and commissioning from the right, integrated devices for error-free high speed, high data transmissions over fiber optic cables. Cost and gratifaction optimized CWDM solutions with built-in expansion capabilities can be found from reliable and trusted online network solution companies. Choose the best one with years of experience and technological expertise to provide the best CWDM solution and use the CWDM technology to construct your cost-effective fiber optic networks.

Fiber Optic Internet Services

Fiber Optic Internet Services

custom your fiber optic cables

Fiber Optic Internet is among the modern channel and way of communication. It’s greatly improved the method people manage businesses. This marvelous approach to communication that uses light in glass tubes was initially used in the 1970s by a great scientist and engineer. With the use of this cable, data transmission is made possible through sending information with the cable with the pulsing light.

There are various beneficial packs that include fiber optic internet. Probably the most distinctive characteristic is its speed. It’s incredibly fast that anybody who uses the service will enjoy the comfort of speedy internet service- especially when one is rushing an important task such as a portfolio or school project. Download files or submit files; buy online; download music; watch a film and many more- the fiber optic internet may be the way to go.

With the short speed, employees and executive officers can run their tasks at double or triple but a fraction of time. Less time is required for awaiting a file to load and therefore fiber optic internet increases workplace productivity. Along with the high-speed and also the rise in production rates, almost all businesses will prosper. More production plus more work equals more profit. No stone remains untouched. Every employee beginning with the cheapest categories climbing as much as the highest rank is going to be taken advantage of this fast fiber optic online sites.

The fiber optic internet has been a good steer and active cause of sustainable development and growth through dissemination of information out of all sectors from the economy. It has ensured that expansions are achieved even in the telephone signaling and cabling of televisions.

Subscription to a fiber optic online sites, every businessman or manager or boss will be amazed about how an employee does his job at a considerably faster rate rather than using a dial-up connection which takes forever to complete tasks. Employees will have the convenience of using such high speed internet service and it will also improve the way they intend to accomplish their individual tasks. Every person in the office is motivated to operate and submit their reports and files on time or well in advanced because of this very handy technology.

Clients could be more than pleased with the short and efficient service a business gives to them due to the help of a Fiber Internet connection. It starts from the benefits of this particular service and falls to motivating the workforce after which bringing on more client satisfaction. The services are particularly useful when you need to accomplish a report with your an earlier deadline. Fast internet service equals rapid results.

A lot of businesses are reaping the rewards that a fiber optic internet connection gives for them. They not only retain and develop their valued clients they also gain a new customer base. More customers result to more profits and more business. No one would want to avail of a sloppy service which in turn delivers disappointing results. Everyone wants to obtain their concerns and requests addressed right away which is why this sort of online sites is very beneficial not only to big and small businesses and industries, but additionally to university students and stay-at-home that do their very own daily tasks of reports, online investigation and paper works.

I am a specialist from FiberStore, where you can obtain the most quality fiber optic products, for example plastic optical fiber, MTP trunk cable and other fiber patch cables for the fiber optic internet services.

How to Build a Business Fiber Optic Network

How to Build a Business Fiber Optic Network

What A Business Fiber Optic Network Contains:
The essential philosophy of contemporary LAN wiring may be the idea of structured cabling. The complete networking method is separated into chunks that allow workstation wires to become concentrated. In a typical enterprise LAN system, the fiber optic network contains Telecommunication Rooms, Backbone Wiring, Work Areas and Horizontal Wiring.

  • On each floor, there will be a telecommunication room located on top of the other person. These telecommunication rooms hold all network equipment including routers, servers and switches. Telecommunication rooms are linked together with fiber optic cables passing through vertical shafts which are called backbone wiring/cabling or vertical wiring/cabling.
  • The backbone fiber optic cables typically run at 10Gbps Ethernet speed to supply enough bandwidth for the whole enterprise.
  • Work areas are work stations (PCs) split up into cubicles. These work areas are connected to each floor’s telecommunication room with horizontal cabling. These horizontal copper/fiber optic cables typically run at 1Gbps Ethernet speed.

How To Pull The Fiber Optic Cable Through Vertical Shaft:
The backbone cabling was once twisted pair copper cables. The good news is it is normally multimode fibers as well as single mode fibers. There are many tools available to pull the vertical backbone fiber cables. Included in this are Gopher poles, cable caster pulling tools or fish tapes. In most cases you have to put in a pulling eye to guard the fiber cables and connectors while pulling the fiber cables.

How To Terminate A Backbone Vertical Fiber Optic Cable:
The backbone fiber optic cables can be found in without termination (connector). You always have to terminate these fibers with fiber optic connectors such as ST, SC or LC connectors. The termination steps usually are not extremely hard nevertheless it does require some extensive training before you perform a fairly good job.

Fiber optic termination tools

The equipment necessary for fiber terminations are fiber optic cable strippers, Kevlar cutters, fiber cleavers, ST, SC, LC or MTRJ fiber optic connectors, fiber connector hand polishing puck, fiber polishing films and fiber inspection microscope.

Fiber optic cable termination steps

  • 1. Strip the fiber: Fiber cables have 3mm jacket, Kevlar strength member and 0.9mm buffer coating. To get at the 0.125mm fiber cladding, you should remove the 3mm jacket having a fiber jacket stripper, then cut the Kevlar fibers having a Kevlar cutter, finally strip the 0.9mm buffer down to 0.125mm cladding having a fiber optic stripper.
  • 2. Cleave the fiber: After stripping the fiber as a result of 0.125mm cladding, you insert the fiber into a SC, ST or LC connector, after which inject some fiber optic epoxy in to the connector using a syringe. You will then lay the connector into a hot oven for stopping the fiber epoxy so it can take the fiber tightly. After the curing process, you cleave extra fibers in the connector tip having a fiber optic cleaver.
  • 3. Hand polishing the fiber: Within the next step, you place the connector (already with fiber fixed inside) into a hand polishing puck, which serves as a fixture while you polish the end face with the connector to get a good quality mirror like finish. Then you definitely hold the polishing puck and polish the connector over a connector lapping film in a figure 8 shape for 10~15 times. Repeat the hand polishing steps stepping from 12um, 3um to 0.5um lapping films.
  • 4. Fiber termination quality inspection: The last step is to inspect the caliber of work. You insert the finished connector right into a fiber optic inspection microscope which zooms to 200 to 400 time level to show you all the scratches and pits which could exist around the connector end face. If everything looks perfect, then you can connect your fiber into the network.

This is only a beginning of building a fiber optic network. Please go to FiberStore for more information. FiberStore is a fiber optic cable supplier who offers a large selection of fiber optic network solutions. You can buy figure of 8 cable and plastic fiber there with high quality!

The Application of 10G PON Technology

The Application of 10G PON Technology

With the major carriers “Broadband speed”, “Light of Copper” project extensively, The future will be a multimedia broadband services, video on demand, interactive games as the main feature, high-bandwidth, integrated operators will be judged promoted by the merits of the standard broadband products.
Under the broadband Fiber Optic Network in the trend, PON technology has become the world’s attention to various telecom operators hot technology is one of the operators to implement “broadband speed”, “Light of Copper” engineering technology base. Wheter EPON, or GPON, which provides only for the uplink and downlink bandwidth of 1G or 2G, but with the current interactive network TV (IPTV), high definition television (HDTV), online games, video services and other large flow, a large broadband business development and popularization of the per-user bandwidth demand is expected to grow every three years, a trend of increasing magnitude, from the future operator of long-term trends, per-user bandwidth demand will be 50-100 Mbit/s between. This way, EPON and GPON are unable to meet the future needs of the development of broadband services, the existing PON port bandwidth, there will be a bottleneck. Therefore, ITU-T, FSAN, IEEE and other major standards organizations begin the next generation of PON technology research.
Similar to 1G PON Technology, 10G PON and 10G EPON technology is still divided into two camps 10G GPON. In IEEE 802.3av 10G EPON standards, maximizing follows the usual IEEE 802.3ah content, with good upward compatibility.
>> 10G PON technical analysis
Recalling the history of PON technology can be found in each of the PON technology from birth to the end of the day have to go through large-scale commercial development of technical standards, the relevant chip and optical module development, test and production, the creation of experimental and commercial bureau 4 stages of deployment, which lasted five years or so, each one of which will go through several stages of development of the argument.
* Standardization Advances
Standards are mature is the precondition of judging whether a technology have lead to condition. At this stage, including IEEE, ITU-T, FSAN and number of ongoing international standardization organizations 10G EPON and 10G GPON standards development work of two technologies. Overall, the 10G EPON technology start time earlier than 10G GPON, therefore, the current standardization process of 10G EPON slightly faster than 10G GPON.
a. 10G EPON
Technologies with 1G EPON, 10G EPON standards are mainly led by the IEEE to complete. IEEE organization at September 12, 2009 released the 10G EPON international standards 802.3av, this standard focuses on the physical layer 10G EPON technology research, followed the tradition of 1G EPON MPCP protocol, the 1G EPON downlink bandwidth increases to 10G at the same time, to ensure that the operator of the original investment is not compromised and 10G EPON smooth upgrade, IEEE 802.3av standard defines and 1G EPON ONU coexist in the same ODN network of 10G EPON ONU standard parameters.
Further, in IEEE 802.3av standard, the physical layer defines two parameters: one asymmetric model, which 10G rate downlink and 1G rate uplink; other is symmetrical pattern, i.e. uplink rate and downlink rate are both 10G. Asymmetric mode can be considered as a transitional form symmetrical patterns, in the early less demand for upstream bandwidth and cost sensitive applications, you can use an asymmetric form. With the development of business and technology progress, will be gradually transition to a symmetrical mode.
b. 10G GPON
According to ITU-T Study plans, NGPON will experience two standard phases: the first phase is the coexistence with GPON, GPON ODN heavy use of XG-PON, which in turn contains the uplink and downlink phase XG-PON1 asymmetric and symmetric XG-PON2 two kind of model; Second stage is completely new ODN’s NGA2. High concern Wavelength Division Multiplexing – Passive Optical Network (WDM-PON) technology areas belong to the second stage, it was adopted in a fiber access network using multiple wavelengths to achieve the expansion, but the burst mode CWDM, colorless ONU transceivers, tunable WDM devices and some difficult technology can not break, WDM-PON is still at the proof stage.
In the end of September 2009 meeting of the ITU-T SG 15 plenary session, Q2 Working Group officially launched the NG-PON standard text in the first stage, that overall demand for next-generation PON systems (G.987.1) and Physical Layer Specifications (G.987.2), and also developed in mid-2010, publishing transmission convergence layer (G.987.3) and management control interface (G.988) standards program.
* Technical Parameters
Wheter IEEE 802.3av, or ITU-T G.987 protocol suite, all relevant technical parameters for 10G PON physical layer index, optical power budget to make a detailed definition. However, due to the two major standards organizations considered the starting point, the technical indicators are also some differences.
a. 10G EPON
There are four key points of 10G EPON technology:
1. Defines six 10G EPON optical power budget, in view of the asymmetric mode PRX10, PRX20 and PRX30 as well as for symmetric mode PR10, PR20 and PR30, these six kinds of optical power budget model is basically to meet the construction needs of the service provider network;
2. 10G EPON technology in achieving the 1G EPON conventional multi-point control protocol layer (MPCP) based on the forward compatibility, also extended the original message type, for reporting optical terminal equipment (OLT), ONU Optical Transceivers switch time to meet the 10G EPON system requirements;
3. 10G EPON uses (255, 223) Forward Error Correction (FEC) encoding method, the encoded with FEC coding for the same strain of 1G EPON, but its strong support 10G EPON coding gain can lower the sensitivity of the optical receiver;
4. 10G EPON uplink and downlink wavelength for the re-planning, downlink using 1268-1280nm wavelength, then reuse the original uplink of 1G EPON 1575-1580 nm wavelength, the wavelength in order to avoid conflicts, 10G EPON uplink only use time division multiple access (TDMA) manner.
b. 10G GPON
Has been released G.987.1 standard that defines 10G GPON system’s overall technical requirements and system architecture, clearly put forward the 10G GPON system to ensure good QoS, based on the traditional telecom services to fully support all emerging businesses and the same time, also provides dynamic Bandwidth Allocation (DBA) algorithm, energy saving, authentication and encryption related content to inherit the original 1G GPON technology; The G.987.2 is the focus of standardized 10G GPON physical layer parameters, including downlink rate, ODN power budget, splitting ratio, up and down the line wavelength range and line coding, etc., although down the line of 10G EPON same wavelength range and 10G EPON, GPON but due to the wavelength with 1G is not conflict, therefore, 10G GPON uplink and downlink are used wavelength division multiple access (WDMA) manner.
* Industrial chain development
A complete industrial chain, including chip PON, optical modules and equipment three links. If to analysis PON industry chain, it need to start from the three links, analysis of every link current development status and future development trend.
Overall, 10G EPON and 10G GPON is currently not reach the requirements of large-scale commercial applications, although some equipment manufacturers have recently introduced a 10G EPON or 10G GPON products, and with operators, the creation of some experimental inning, but still in the laboratory testing phase, is still some distance away from the large-scale commercial.
>> Conclusion

10G PON technology to meet future access networks, “large-capacity, fewer offices,” the direction of development, while improving access speed, supports larger branching ratio, covering more users. Therefore, 10G PON technology will become the future telecom operators to achieve “broadband speed”, “Light of Copper” and other broadband network construction hot technology for sustainable development.

To Introduce Optical Communication and Internet Technology

To Introduce Optical Communication and Internet Technology

Technology of terabit optic circuit packet integrated switching system
New exchange system and integrated optic circuit packet layers will be provided to meet the large capacity, high quality, low cost and effective demand so as to adapt to the cable wireless traffic spikes in the service in the future.
A connection-oriented packet transport technology is considered to be an effective way to improve the performance of packet data transmission. It is necessary, can put a layer of transport network in the direction of capital spending and minimizing operating costs to overcome the network provider’s storage and traffic increase of income. And unified control mechanism is applied to the network resource allocation, flexible wavelength circuit and packet layer according to the service characteristics. The key technologies of the system are as followings.
Technology of Terabit Optic-Circuit-Packet Integrated Switching System
  * Connection-oriented Packet Transport
  * Optic-Circuit-Packet Integrated Switch
  * Optic-Circuit-Packet Layer Integrated Control/Management
Technology of beyond-100G Optical Transmission
  * Long-reach OTN Transceiver

  * Short-reach Ethernet Transceiver

Technology of terabit optic circuit packet integrated switching system
Smart IDC Network Control Technology for Cloud Service
Along with the rapid spreads and changes of cloud services and the technologic growth of the components in the IDC, the IDC networks are demanding following changes.
Cloud optimized: The virtualization rate of the server is rising up to 10:1-100:1 and storage virtualization is also possible recently. So IDC is requiring the cloud-optimized virtualization to the network side which are connecting the virtualized cloud resources.
Flattened: There are network control needs to reduce the delay latency of virtualized server-to-server communications which is occuping up to 70%, to rise the utilization rate the link resources of L2 IDC networks of Tree-shape multi-layer hierarchical architecture with STP.
Auto-Managed: There are demands of integrated management of network and cloud resources between IDC and create/delete/VM migration to ensure seamless services in the cloud.

Therefore, our research target to develop the Smart IDC fiber optic products to solve the current problems of IDC network with the 3 IDC network control technologies of the Cloud-Optimized Virtual Network Control technology, the Flattened IDC Network Control Technology and Auto-managed IDC network control technology.

High speed optical transmission technology
The rapid progress in optical transmission technology has been supporting the ever increasing transmission traffic. In particular, the WDM technology, it is by the end of last century, played a main role. However, the new technology needs to use data traffic exponentially. A solution is 100Gb/s transmission. IEEE announced 40G/100G Ethernet standard and ITU-T has completed ONT standard to accommodate 100G signals in DWDM backbone network. Recently, the 100Gb/s transmission technology has become the commercial deployment, in addition to the existing 10Gb/s and 40Gb/s. Already technologies beyond 100G or 400G are started being discussed. With a long-term perspective, it is a disruptive

technology, SDM (space division multiplexing) technology is seriously explored to harness the traffic in economic and energy efficient way.

Next Generation WDM-PON Technology
The WDM-PON is promising technology to provide broadband access offering optic-wireless converged next generation multi-application service with the highest quality.
There are many advantages of the WDM-PON:
* Using multiple wavelength on a single fiber, each of which carries a transmission bandwidth up to 10Gb/s at maximum; Therefore, the WDM-PON can reduce the optical access infrastructure;
* Suitable for long-reach application and possible to achieve OPEX reduction;
* Provide co-existence with legacy TDM-PON (EPON system, and GPON) systems and pay as you grow upgradability;
* Unique advantages of so-called protocol transparency, which means that it requires no specific transmission protocol, and the physical layer security, in addition to scalability in the increase of the bandwidth and guarantee of the quality of service based on bandwidth abundance.