Relating to wavelength division multiplexer or WDM, how much do you realize about it? In fact, it can synthesize a series of optical signals which are loaded with information and facts and have numerous wavelengths. Then, the synthesized optical signals will be transmitted by means of a single optical fiber. Lastly, based on particular system, the optical signals with various wavelengths are going to be separated on the getting end. Inside the present market, there are actually two most important WDM multiplexer products, which are CWDM multiplexer and DWDM multiplexer. The following will give detailed introduction on them.



 



Concerning to the CWDM device, it really is shortened from coarse wavelength division multiplexing. Comparatively speaking, it is a form of low-cost WDM transmission strategy and mostly applied to Metropolitan Region Network access stratum. When it comes to the benefits, the low device cost comes exceptionally initially. Meanwhile, as a result of the tiny size, low power consumption, very simple maintenance and very easy energy provide, it may lower the operating price of network clearly. Besides, the CWDM device also can largely increase the transmission capacity of optical fiber as well as the utilization price of optical fiber resource. The transparent speed and treaty paves the way for faster development of high-speed data site visitors of MAN. What is even more, the CWDM multiplexer enjoys wonderful flexibility and extendibility. By way of example, it may open the online business for buyers inside many hours. Also, it can present protection for all those systems like gigabit Ethernet that has no protective function. Just because of above benefits, the CWDM is broadly widely used in enterprise network and campus network.



 



Speaking of dense wavelength division multiplexer or DWDM device, it's famous for the bandwidth of single mode fiber and low-loss character. In addition, it turns to a number of wavelengths as carrier waves and permits every carrier channel to transmit at the same time. Based on the structure, you will discover integrated system and open program. As the integrated system, the optical signal of inserted monochromatic light transmission equipment terminal should really satisfy the G.692 normal. Then again, optical transmitter might be installed on the front and back on the wave separator inside the open program. Compared with CEDM multiplexer, the DWDM device can make the right use of low-loss band of optical fiber, which can boost the transmission capacity considerably. Meanwhile, additionally, it has the ability of transmitting a series of signals within 1 optical fiber. Such a property is really good towards the compatibility of digital signal and analog signal. Moreover, additionally, it has the advantages of rapid recovery speed, low price and higher system reliability.