In regards to wavelength division multiplexer or WDM, how much do you realize about it? In reality, it can synthesize a series of optical signals which can be loaded with information and have different wavelengths. Then, the synthesized optical signals will likely be transmitted via a single optical fiber. Lastly, depending on particular method, the optical signals with unique wavelengths will be separated on the receiving end. Within the current marketplace, you will discover two most important WDM multiplexer merchandise, that are CWDM multiplexer and DWDM multiplexer. The following will give detailed introduction on them.



 



Regarding towards the  CWDM device, it really is shortened from coarse wavelength division multiplexing. Comparatively speaking, it is a form of low-cost WDM transmission method and mostly applied to Metropolitan Region Network access stratum. When it comes to the positive aspects, the low device expense comes extremely first. Meanwhile, because of the smaller size, low power consumption, straightforward maintenance and very easy power supply, it can cut down the operating cost of network certainly. Apart from, the CWDM device also can largely improve the transmission capacity of optical fiber at the same time as the utilization rate of optical fiber resource. The transparent speed and treaty paves the way for faster improvement of high-speed data traffic of MAN. What exactly is alot more, the CWDM multiplexer enjoys wonderful flexibility and extendibility. For example, it can open the online business for shoppers inside various hours. Also, it may produce protection for those systems like gigabit Ethernet which has no protective function. Simply because of above benefits, the CWDM is widely well-known in enterprise network and campus network.



 



Speaking of dense wavelength division multiplexer or DWDM device, it truly is well-known for the bandwidth of single mode fiber and low-loss character. In addition, it turns to numerous wavelengths as carrier waves and allows every single carrier channel to transmit simultaneously. In accordance with the structure, you can find integrated program and open technique. Because the integrated program, the optical signal of inserted monochromatic light transmission gear terminal must satisfy the G.692 regular. Nevertheless, optical transmitter might be installed on the front and back with the wave separator inside the open technique. Compared with CEDM multiplexer, the DWDM device can make the very best use of low-loss band of optical fiber, which can increase the transmission capacity tremendously. Meanwhile, it also has the capacity of transmitting a series of signals inside one particular optical fiber. Such a home is fantastic towards the compatibility of digital signal and analog signal. Additionally, in addition, it has the positive aspects of speedy recovery speed, low price and higher program reliability.