Tag Archives: CWDM SFP

CWDM/DWDM SFP transceiver for Gigabit Ethernet

The Coarse Wavelength Division Multiplexing (CWDM) SFPs (Small Form-Factor Pluggable) are hot-swappable, transceiver components that you plug into SFP-compatible uplink ports. DWDM  SFP transceivers provide the high speeds and physical compactness that today’s networks require while delivering the deployment flexibility and inventory control that network administrators demand. The Cisco DWDM SFP transceiver allows enterprise companies and service providers to provide scalable and easy-to-deploy Gigabit Ethernet or Fiber Channel services in their networks. Our DWDM SFP transceivers are available in all 100 GHz C-band wavelengths on the DWDM ITU grid. They are designed to Multi-Source Agreement (MSA) standards to ensure broad network equipment compatibility. Our DWDM SFP transceiver has the following features: Up-to 80km over SMF 1Gbps, 100GHz (C-Band) DWDM SFP Transceiver, 0º – 70º Operating Case Temperature, SFF-8724 Digital optical monitoring, Hot-swappable for SFP LC ports, Cisco 90 day standard warranty, Cisco SFP optical module can be covered by SMARTnet, SFP MSA / IEEE Std 802.3, Cisco compact DWDM MUX DEMUX is RoHS compliant. (Fiberstore Transceivers products 10% discount, welcome to choose and buy!)

DWDM SFP transceiver, CWDM SFP
CWDM is a technology that allows for multiple channels, of mixed protocols and data rates, to be COMBINED and transmitted over fiber optic cable.

Where previously additional fiber needed to be run, now existing strands can be more fully utilized, reducing fiber plant expenditures as bandwidth needs increase. Fiberstore’s CWDM SFP transceivers provide scalable intra- and inter-campus connections over fiber links. Eight wavelengths are available in multiple distances enabling substantial bandwidth without running new fiber.

Coupled with Fiberstore’s passive CWDM Mux/Demux or WDM transport systems, the these products reduce the cost of high bandwidth network updgrades.

About Fiberstore

Fiberstore designs, manufactures, and sells a broad portfolio of optical communication products, including passive optical network, or PON, subsystems, optical transceiver modules like CWDM SFP and DWDM SFP which are used in the enterprise, access, and metropolitan segments of the market, as well as other optical components, modules, and subsystems. In particular, Fiberstore products include optical subsystems used in fiber-to-the-premise, or FTTP, deployments which many telecommunication service providers are using to deliver video, voice, and data services.

The global, vertically-integrated business model and expertise in optical design enables Fiberstore to rapidly deliver market-leading, high performance fiber optic components and subsystems. The R&D and engineering teams provide strong innovative capability , who have core technical knowledge ranging from optoelectronic device, optical subassembly, and optical module design, to product and manufacturing process development expertise. With over 200 employees primarily in Dong Guan and ShenZhen, we can serve the customers and distribution partners around the world fast. What’s more, our custom service and wholesale service save customers’ time and money, making customers enjoy personalization.

Related article: How Many Types of SFP Transceivers Do You Know

DWDM vs CWDM the most effective method

Within today’s globe associated with rigorous conversation requirements as well as needs, “fiber optic cabling” has turned into a extremely popular expression. In neuro-scientific telecoms, information middle online connectivity as well as, movie transportation, dietary fiber optic wiring is actually extremely appealing with regard to today’s conversation requirements because of the huge bandwidth accessibility, in addition to dependability, minimum lack of information packets, reduced latency as well as elevated protection. Because the bodily dietary fiber optic wiring is actually costly in order to put into action for every person support, utilizing a Wavelength Department Multiplexing (WDM) with regard to growing the capability from the dietary fiber to transport several customer interfaces is really a extremely recommended. WDM is really a technologies which brings together a number of channels associated with data/storage/video or even tone of voice methods on a single bodily fiber-optic cable television by utilizing a number of wavelengths (frequencies) associated with gentle along with every rate of recurrence transporting another kind of information. By using optical amplifiers and also the improvement from the OTN (DWDM System) coating designed with FEC (Ahead Mistake Corection), the length from the dietary fiber optical conversation may achieve a large number of Kms with no need with regard to regeneration websites.
DWDM (Dense Wavelength Division Multiplexing) is a technology allowing high throughput capacity over longer distances commonly ranging between 44-88 channels/wavelengths and transferring data rates from 100Mbps up to 100Gbps per wavelength. Each wavelength can transparently carry wide range of services such as FE/1/10/40/100GBE, OTU2/OTU3/OTU4, 1/2/4/8/10/16GB FC,STM1/4/16/64, OC3/OC12/OC48/OC-192, HD/SD-SDI and CPRI. The channel spacing of the DWDM solution is defined by the ITU.xxx (ask Omri) standard and can range from 25Ghz, 50GHz and 100GHz which is the most widely used today. Figure – 1 shows a DWDM spectral view of 88ch with 50GHz spacing.

Figure -1: Spectral view of 50GHz spacing 88 DWDM channels/wavelengths
DWDM systems can offer as much as ninety six wavelengths (from 50GHz) associated with combined support kinds, and may transportation in order to miles as much as 3000km through implementing amplifiers, because shown within determine two) as well as distribution compensators therefore growing the actual dietary fiber capability with a element associated with x100. Because of its much more exact as well as stable lasers, the actual DWDM technologies is commonly more costly in the sub-10G prices, however is really a appropriate answer and it is ruling with regard to 10G support prices as well as over supplying big capability information transportation as well as online connectivity more than lengthy miles from inexpensive expenses. The actual DWDM answer these days is usually inlayed along with ROADM (Reconfigurable Optical Add Drop Multiplexer) that allows the actual creating associated with versatile remotely handled national infrastructure by which any kind of wavelength could be additional or even fallen from any kind of website. A good example of DWDM gear is actually nicely shown through PL-1000, PL-1000GM, PL-1000GT, PL-1000RO, PL-2000 as well as PL-1000TN through DK Photonics Systems.
Figure-2 Optical amplifier used in DWDM solution to overcome fiber attenuation and increase distance
CWDM (Coarse Wavelength Division Multiplexing) proves to be the initial entry point for many organizations due to its lower cost. Each CWDM wavelength typically supports up to 2.5Gbps and can be expanded to 10Gbps support. This transfer rate is sufficient to support GbE, Fast Ethernet or 1/2/4/8/10G FC, STM-1/STM-4/STM-16 / OC3/OC12/OC48, as well as other protocols. The CWDM is limited to 16 wavelengths and is typically deployed at networks up to 80Km since optical amplifiers cannot be used due to the large spacing between channels. An example of this equipment is well demonstrated by PL-400, PL-1000E and PL-2000 by DK Photonics Networks.
You will need to remember that the complete selection regarding DK Photonics’ products was created to help equally DWDM and also CWDM engineering through the use of specifications centered pluggable optical web template modules for instance SFP, XFP and also SFP+. The particular engineering employed will be cautiously computed every venture and also in accordance with consumer specifications regarding length, ability, attenuation and also upcoming wants. DK Photonics furthermore gives migration way coming from CWDM to be able to DWDM permitting lower access expense and also upcoming enlargement which can be looked at inside the DWDM above CWDM engineering site.

Detailed description of CWDM module and system

CWDM is actually brief with regard to Rough Wavelength Department Multiplexing. Initially, the word “coarse wavelength department multiplexing” had been pretty universal, as well as designed a variety of points. Generally, this stuff discussed the truth that the option associated with funnel spacings as well as rate of recurrence balance had been so that erbium doped dietary fiber amplifiers couldn’t end up being employed. Before the fairly current ITU standardization from the phrase, 1 typical which means with regard to rough WDM designed 2 (or even much more) indicators multiplexed on to just one dietary fiber, exactly where 1 transmission is at the actual 1550 nm music group, and also the additional within the 1310 nm music group.
CWDM quests consist of CWDM mux/demux component as well as CWDM DWDM component. The most popular settings associated with CWDM mux/demux component is actually 2CH, 4CH, 8CH, 16CH, 18CH CWDM MUX component. 3 Solitary dietary fiber or even twin dietary fiber link with regard to CWDM Mux/demux can be found. Appropriately, they’ve 2 essential features natural within techniques using CWDM optical elements that permit simpler and for that reason additionally less expensive compared to within DWDM techniques. CWDM really is easy when it comes to system style, execution, as well as procedure. CWDM works together with couple of guidelines that require optimisation through the person, whilst DWDM techniques need complicated information associated with stability associated with energy for each funnel, that is additional complex whenever stations tend to be additional as well as eliminated or even when it’s utilized in DWDM systems diamond ring, particularly when techniques include optical amplifiers.
WDM (Wavelength Department Multiplexing) is really a method, that runs on the distinctive home associated with fiber-optics. This particular home enables the actual mixture of several indicators on to just one follicle associated with dietary fiber. Every transmission is actually possessed through an additional wavelength, associated with gentle. Because 1 wavelength doesn’t have impact on an additional wavelength, the actual indicators don’t conflict. As well as CWDM (Rough wavelength department multiplexing) is often a technologies that multiplexes several optical indicators for any moving extravagant dietary fiber optic follicle by using various wavelengths, or even colours, associated with laser beam gentle to keep the various indicators. By using bidirectional marketing communications greater than a solitary follicle associated with dietary fiber, system supervisors may recognize the multiplication impact inside the capability of those obtainable dietary fiber national infrastructure.
CWDM quests carry out 2 features. Very first, these people filtration system the actual gentle, making sure basically the required wavelengths are utilized. 2nd, these people multiplex or even demultiplex several wavelengths, which may be utilized on only one dietary fiber hyperlink. The actual distinction is within the actual wavelengths, which are utilized. Within CWDM room, the actual 1310-band along with the 1550-band tend to be split in to scaled-down rings, every just 20-nm broad. Inside the multiplex procedure, the actual several wavelength rings tend to be mixed on to only one dietary fiber. Within the demultiplex procedure, the actual several wavelength rings tend to be divided from the solitary dietary fiber. Usually, the CWDM system requires 2 types. The point-to-point program links 2 areas, muxing as well as demuxing several indicators for any moving extravagant dietary fiber. The cycle or even multi-point program links several areas, usually utilizing Add/Drop quests.

CWDM transceiver standard analysis and introduction

According to different standards, CWDM transceivers include CWDM SFF, CWDM GBIC, CWDM SFP, CWDM SFP+, CWDM XFP, CWDM X2, CWDM XENPAK, and CWDM LX-4.

CWDM SFF (Small Form Factor): The SFF was one of the first commercially available small form transceivers that used only half the space of the popular conventional SC types. CWDM SFF transceivers found their way into applications ranging from 100 Mbps all the way up to 2.5 Gbps.

CWDM GBIC (GigaBit Interface Converter): GBIC was the first pluggable MSA (Multi-Source Agreement) transceiver with applications primarily in switch and router blades for Gigabit Ethernet. An easy migration from the standard LH part was to have specific wavelength DFB lasers; this enabled the development of CWDM GBICs and eventually DWDM GBICs. The GBIC transceivers have been used primarily in Gigabit Ethernet applications, but in some cases both lower speed, multi-rate parts and higher speeds of around 2.5 Gbps have been developed. The GBIC was one of the first transceivers to have an APD receiver rather than a PIN type for higher sensitivity. Tips: There were three basic types of Ethernet transceivers: the short reach, an 800-nm VCSEL-laser-based part called the SX with a span of 500 m over MMF; the medium reach, 1310-nm FP laser part called the LX with a span of 2 km over SMF and a 1550-nm DFB part used for long haul called the LH with a span of 80 km, also over SMF.
CWDM SFP (Small Form Pluggable): SFP is the transceiver combining the space savings of the SFF and the flexibility of the GBIC. It has approximately the same size of the SFF but with the functionality of a GBIC. Besides the size advantages over the GBIC, the SFP had lower power dissipation, since it operates at 3.3 V while the GBICs worked with 5V supply voltage. In addition, the transceivers provide monitoring capabilities for power, temperature, and voltage levels. With technology being pushed to meet the demands of both function and size, CWDM and DWDM SFP transceivers have been developed for use in Gigabit Ethernet as well as 2.5 Gbps SONET applications. Moreover, SFPs have also been developed for use in 1, 2, and 4 Gbps Fibre Channel applications.
CWDM 10G (CWDM SFP+, CWDM XFP, CWDM X2, CWDM XENPAK, and CWDM LX-4): There are multiple MSAs for the 10-Gbps transceivers, typically denoted by an X in the name, X standing for the Roman numeral 10. XFP, XENPAK, X2 and LX-4 are the names of some of these devices. To enable longer spans at 10 Gbps, the institute of IEEE has developed a standard for use of CWDM in the design of these high bit-rate devices, IEEE 802.3 ae-2002. Instead of having a serial link running at 10 Gbps line rate, the LX-4 concept optically transmits and receives four signals at different wavelengths spaced at 1275, 1330, 1325, and 1350 nm. The 25-nm grid is slightly different than the ITU 20-nm grid. The operating bit-rate per channel is 3.125 Gbps, the aggregate bandwidth of all four channels is 12.5 Gbps, which includes the associated protocol overhead. The advantage of the LX-4’s parallel approach is that each of the four tributary channels has a lower bit-rate and better dispersion tolerance. At the same time, lower-cost lasers and detectors can be used.