Tag Archives: CWDM

Fiberstore WDM Solution

WDM Application Overview
Since the advent of optical communications,great technological efforts happen to be dedicated to the exploitation of the large bandwidth of optical fibers.The Wavelength Division Multiplexing (WDM) Techonology is such one of these techonologies.WDM provide high performance multiplexing or de-multiplexing for various of applications. CTC Union WDM product family covers following wavelength windows widely used in optical fiber systems: From 1471nm to 1611nm for CWDM optical communications.The optical multiplexers are utilized to combine signal in the traffic card (single channel transponders or GE Multiplexer) onto a single pair of fiber.The WDM components cash wider operating bandwidth,lower insertion loss,higher power handling,high isolation,etc.(Application diagram see Figure 1.2.3)


Figure 1. WDM Application Digram

local network application

Figure 2.Local Network Application—Access

Local Network Application—Interoffice

Figure 3. Local Network Application—Interoffice

1.Significantly increases the amount of data transmitted over a single fiber (up to 80x)
2.Expands the capacity of the network without laying additional fiber
3.Allows Operators of Storage Area Networks (SANs) and Datacenters to increase bandwidth between sites without
4.leasing additional fiber from carriers
5.Flexibility: each wavelength can carry a different type of data(Ethernet, Fibre Channel, SONET/SDH, etc)
6.Easy to manage

CWDM & DWDM SFP and GBIC Transceivers
WDM transponder

Fiberstore Hot sale WDM Product
CWDM MUX/DEMUX (Coarse Wavelength Division Multiplexer/Demultiplexer) is a flexible and low-cost solution that enables the expansion of existing fiber capacity. Coupled with highly reliable passive optics certified for environmentally hardened applications,the CWDM MUX/DEMUX solution lets operators make full use of available fiber bandwidth in local loop and enterprise architectures.Fiberstore CWDM MUX/DEMUX modules split up to 18 channels (20 nm spaced) to a single fiber.The standard packages are ABS Plastic Box,19″ Rack Mount Chassis and LGX Metal Box.No matter what kind of connectors (such as FC, ST, SC, LC, etc.) are all available,and we can also mix connectors on one device.

4CH CWDM mux single fiber details

Fiberstore DWDM MUX DEMUX with 50GHz/100GHz/200GHz channel spacing can be used to combine or separate wavelength channels at standard ITU grid.The common configuration including 2,4,8,16,24,32,40,44,and 48 channels.These DWDM modules passively multiplex the optical signal outputs from 4 or more electronic devices,and send them over a single optical fiber and then de-multiplex the signals into separate,distinct signals for input into electronic devices at the other end of the fiber optic link. Our standard package types of DWDM MUX DEMUX are Field Module ABS Plastic Box,19″ Rack Mount Chassis and LGX Metal Cassette Box.We also supply custom package to meet customers’requirements.All the DWDM MUX DEMUX modules provide excellent optical performance and high reliability to ease of fiber handling and power saving solution.

16CH DWDM MUX dual fiber details(1)

Fiberstore CWDM SFP Module
The Fiberstore Coarse Wavelength-Division Multiplexing (CWDM) Small Form-Factor Pluggable (SFP)(Figure 1) provides scalable and easy-to-deploy Gigabit Ethernet(GE) and Fibre Channel(FC) services in optical networks.These products enable the design of flexible multiservice networks.The Fiberstore CWDM SFP provides a convenient and cost-effective solution for Gigabit Ethernet and Fibre Channel in campus,data-center,and metropolitan-area access networks.The Fiberstore CWDM SFP solution consists of ten different pluggable transceivers complimented by different CWDM multiplexer/demultiplexer or optical add/drop multiplexers (OADMs).The CWDM SFP transceivers are compliant with the ITU-T G.694.2 standard CWDM grid.


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Reuse technology analysis of optical network

Within optical dietary fiber conversation, multiplexing technologies is actually regarded as prolonged so far as we all know, the capability associated with optical dietary fiber system architectural. FDM as well as WDM usually believe that there’s basically absolutely no distinction in between, to help you believe that WDM is actually “rough”, as well as rate of recurrence department multiplexing is really a “niche”, in order to place both 1 class. Wavelength department multiplexing (DWDM) tend to be talked about beneath, sparse wavelength department multiplexing (CWDM), transplanting multiplexing (higher) along with optical multiplexing technique. 


So-called DWDM (Thick exactly where Department Multiplexing) technologies, is also the folks frequently state how the DWDM, describes a type of optical dietary fiber information tranny technologies, this particular technologies UTILIZES laser beam Wavelength based on little bit parallel tranny collection or even chain information tranny setting within optical dietary fiber tranny.DWDM very first launched the actual optical transmission designated to some specific music group inside the specific rate of recurrence (wavelength, lambda), then your transmission multiplexing right into a solitary dietary fiber, in this manner may significantly boost the bandwidth associated with may be lounging optical cable television. Because of intro (inbound) transmission within optical coating doesn’t quit, the actual price from the user interface as well as platforms may stay impartial, this enables providers in order to DWDM technologies as well as system integration associated with current gear as much as, simultaneously received the present lounging optical cable television didn’t possess to utilize a large amount of bandwidth.DWDM may complement the actual several optical transmission tranny, the outcomes from the optical transmission could be increased to the exact same team simultaneously with just one optical dietary fiber tranny, the actual bandwidth from the system is actually significantly elevated. Every showing indicators could be arranged in order to various tranny price (OC — 3/12/24, and so on. )#) and various platforms (SONET, ATM, information, and so on. )#).The DWDM systems, for instance, could be combined within DWDM depending on OC — forty eight (two. 5 Gbps) as well as OC — 192 (10 Gbps) 2 price associated with SONET transmission. To achieve around forty Gbps associated with large bandwidth. Ownership associated with DWDM program within the over objective simultaneously may nevertheless keep up with the exact same degree of program overall performance and also the current tranny techniques, dependability as well as balance. Long term DWDM fatal may have an overall total in excess of eighty wavelengths much more OC — forty eight in order to two hundred Gbps or even move price is actually up to forty wavelength associated with OC — 192 in order to four hundred Gbps associated with tranny price, the actual bandwidth may be sufficient in order to inside 1 2nd tranny 90000 quantities from the encyclopedia!(Related products inDWDM MUX DEMUX)

2. FDM technologies

FDM may be the gentle surf within optical dietary fiber tranny based on it’s rate of recurrence split in to gentle influx funnel, every funnel because impartial associated with info company. To attain inside a multi-channel multiplexing associated with optical dietary fiber tranny. FDM technologies could be coupled with WDM technologies, help to make the actual recycle method end up being bending, specifically the very first rough factors based on the wavelength associated with gentle influx, when the thickness of every funnel is actually lambda, is at every thickness is actually Δ lambda funnel, in order to fill the actual stations (f1, f2,…,fn), every funnel may also impartial associated with fill info. Simply because coherent optical conversation has an superb selectivity, FDM technologies and it is mixture, produces the actual FDM technologies associated with optical dietary fiber system useful problems. Optical FDM multiplexing technologies gear complicated, the actual overall performance from the optical products need is actually higher, therefore joined the actual phase associated with useful architectural require lots of work.


DWDM (thick wavelength department multiplexing) may be the technologies of preference with regard to dietary fiber optic programs, however it’s costly cost impact it’s broad software. When confronted with marketing communications marketplace need, CWDM (sparse wavelength department multiplexing) occurs in the historical second.Sparse wavelength department multiplexing, just like it’s title suggests, is really a near family member associated with DWDM, the actual distinction primarily offers 2 factors:

3. 1 CWDM company funnel spacing is actually broad, consequently, exactly the same optical materials may recycle wavelength associated with gentle surf close to 5 or even 6, “sparse” as well as “intensive” name in order to that the distinction;

3.2 rain fall submission upon 10-12 CWDM modulation laser beam utilizing uncooled laser beam, laser beam as well as DWDM used is actually awesome. Laser beam air conditioning retreats into heat tuning, uncooled laser beam retreats into digital tuning. Simply because inside a broad wavelength area heat submission is extremely unequal, because of the heat tuning had been very hard in order to put into action, expenses tend to be higher. CWDM eliminates the problem, therefore significantly decreased the price, the actual CWDM program price is just 30% associated with DWDM.(Related products in CWDM MUX DEMUX)

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Learning CWDM Knowledge Follow Me

With the need for greater capactiy of optical communication systems, wavelength divison multiplexing (WDM) technology was developed.
WDM basically puts multiple signals on a single fiber, each one represented by a different wavelength. While early systems utilized two or three wavelengths with relatively wide separation, we would today characterize those as wide wavelength division multiplexing(WWDM) systems, and primarily they employed dual window(Fused Biconic Taper) FBT couplers. These devices typically operated in the range of 810/870/1310nm or 1310/1550nm, with the light sources such as Fabry Perot (FP) lasers or light emitting diodes(LEDs) operating at those wavelengths. Those early systems eventually evolved in what we today know as coarse wavelength divison multiplexing(CWDM) and dense wavelength division multiplexing(DWDM) system. While DWDM is the technology of chocie for long-haul or ultra long-haul(ULH) applications across the network back bones, in metro applications CWDM rapidly filled the gap between DWDM and WWDM systems, yet less expensive and complex than DWDM. Today, CWDM is becoming more widely accepted as an important transport architecture, where up to 18 wavelengths are available for transmitting information over a fiber link in metro or access network.

After i readed some professinal books, i know the agreed technial standards, in many industries, benefi both producers and cosumers by stimulating the uptake of a new technology, reducing costs, and increasing the overall market size of a new technology. CWDM standards have allowed the manufacturers of CWDM lasers and optical filters to commit to mass production of a small range of standardized components that they know will be used by all of telecommunication systems equipment who incorporate standardized components into their designs can reduce their design effort and materials costs.

I will to learn the CWDM standards seriously. In next artcial, i will introduce the stansdards fo you soon.