Wavelength Division Multiplexing (Wavelength Division Multiplexing) is a technology that uses multiple lasers to simultaneously send multiple lasers of different wavelengths on a single fiber. Each signal is transmitted in its unique color band after data (text, voice, video, etc.) is modulated. WDM can greatly increase the capacity of the existing optical fiber infrastructure of telephone companies and other operators. Manufacturers have introduced WDM systems, also called DWDM (Dense Wavelength Division Multiplexing) systems
This is the CWDM 8 channels mux and demux with EXP band ports for bi-directional data transmission over dual fiber.
● Features & Benefits:
► Low Insertion Loss;
► Wide Pass Band;
► High Channel Isolation;
► Epoxy Free Design;
► High reliability;
► WDM Network;
► Line Monitoring;
► Local Area Networks;
► Testing instruments.
Central Wavelength (nm)
1270, 1290, …1610
Operating Bandwidth (nm)
Channel Spacing (GHz)
Insertion Loss (dB)
Channel Ripple (dB)
Adjacent Channel Isolation (dB)
Non-adjacent Channel Isolation (dB)
Power Handling (mW)
Operating Temperature (℃)
-5℃ ~ +70℃
Storage Temperature (℃)
-40℃ ~ +85℃
Package Dimensions (mm)
L120 x W80 x H11.6
L142 x W102 x H14.5
● Order Information:
● Lifetime Warranty:
All the fiber optic products in FOCC are fully warranted against defects in material and workmanship with a lifetime guarantee. This warranty does not cover damage caused by accident, improper care, improper use, negligence, normal wear and tear, or the natural breakdown of colors and materials over extended time and use.
Focus on optical communication interconnection products
15 years of manufacturing experience-we are unwavering
Choose our 3 advantages
Standard production workflow through multi-channel process detection, using the international imported testing equipment, strict testing product each performance to ensure consistency of product;Product outbound before and after practice on computer test 85 ℃ high temperature environment test, 24 hours of continuous aging test, to ensure product compatibility, high temperature resistance and anti-aging. all the products have been strictly tested to meet customer demands for reliable and high-performance.
We continue to overcome technical difficulties, independently develop high-speed cables with low power consumption, and pass ISO quality certification, provide free technical support services, can provide targeted solutions and cooperate with user wiring to meet user needs.
Under the guarantee of strong production capacity, the day of the order will be shipped on the same day, and the delivery will be within 48 hours at the latest to ensure that the customer's needs will not be delayed by one second.
Coarse Wavelength Division Multiplexing
Following the application in backbone networks and long-distance networks, wavelength division multiplexing technology has also begun to be used in metropolitan area networks, mainly referring to coarse wavelength division multiplexing technology. CWDM uses a wide window of 1 200 to 1 700 nm, and is mainly used in systems with a wavelength of 1550 nm. Of course, a wavelength division multiplexer with a wavelength of 1 310 nm is also under development. The distance between adjacent channels of the coarse wavelength division multiplexing (large wavelength interval) device is generally ≥20 nm, and the number of wavelengths is generally 4 or 8 waves, up to 16 waves. When the number of multiplexed channels is 16 or less, because the DFB laser used in the CWDM system does not require cooling, the CWDM system has more advantages than the DWDM system in terms of cost, power consumption requirements and equipment size. CWDM is more and more widely used. Accepted by the industry. CWDM does not need to choose expensive dense wavelength division multiplexers and "optical amplifier" EDFAs, and only needs to use cheap multi-channel laser transceivers as relays, so the cost is greatly reduced. Nowadays, many manufacturers have been able to provide commercial CWDM systems with 2 to 8 wavelengths, which are suitable for use in cities where the geographic area is not particularly large and the development of data services is not very fast.
Dense Wavelength Division Multiplexing
Dense Wavelength Division Multiplexing (DWDM) technology can carry 8 to 160 wavelengths, and with the continuous development of DWDM technology, the upper limit of its demultiplexing wave number is still increasing, and the interval is generally ≤ 1.6 nm, which is mainly used in long Distance transmission system. In all DWDM systems, dispersion compensation technology (to overcome the nonlinear distortion in multi-wavelength systems-four-wave mixing phenomenon) is required. In 16-wave DWDM systems, conventional dispersion compensation fibers are generally used for compensation, while in 40-wave DWDM systems, dispersion slope compensation fibers must be used for compensation. DWDM can combine and transmit different wavelengths in the same fiber at the same time. To ensure effective transmission, one fiber is converted into multiple virtual fibers. Using DWDM technology, a single optical fiber can transmit data traffic up to 400 Gbit/s. As manufacturers add more channels to each optical fiber, the transmission speed of terabits per second is just around the corner.