CWDM - Coarse Wavelength Division Multiplex
CCWDM is Compact CWDM (Compact Coarse Wavelength Division Multiplexing), a wavelength division multiplexing technology based on TFF (Thin Film Filter). It works in the same way as CWDM modules, except that CCWDM uses free space technology. , compared with the common CWDM optical fiber cascading method , the CCWDM package size is greatly reduced compared with CWDM modules, and the insertion loss is lower and the consistency is better; it can replace CWDM Products are used in telecommunications, enterprise networks, PON networks, cable television and other fields. The lower insertion loss enables the CCWDM module to have lower signal attenuation during use, thereby reducing the power requirements of the signal transmitter.
For the CWDM module, limited by the minimum bending radius of the optical fiber line, the size of the packaging box cannot be made too small, resulting in most of the space in the box being idle. The adjacent channels of CCWDM use parallel beams to cascade in free space instead of optical fibers. Without the optical fiber used for cascading, the size of the CCWDM packaging box can be greatly reduced. For example, the size of the common standard 4CH CWDM is 80×60×12 mm, and the size of the CCWDM module of Yiyuantong is 50×27×7.7mm, which is only 1/4 of the standard CWDM package size. Can be widely used in high-density environments.
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The characteristics of the LED light make it an attractive home light source. The first is power saving. At the same brightness, the power consumption is only 1/10 that of incandescent lamps and 1/2 of fluorescent lamps. This kind of energy-saving effect cannot be distracted by the shortage of electric energy. Moreover, the number of light sources used as a whole home lighting will increase a lot more than before, so energy saving is even more important. Second, LED lights have a long life, which is more cost-effective for consumers. For LED into home lighting, many consumers believe that LED lights are energy-saving and have a long life. This saves both living expenses and energy. It is a double-edged thing.
Secondly, there is one other LED lamp that can't be achieved, that is, it can be cut and bent at will. The reporter saw in a Philips Lighting Museum in Beijing that the use of Philips LED strips in home decoration can cut out and bend out various creative graphics, and some can also be cut out like a volcano, while others are bent into stars and moons. The shape, and some cut into slender, hidden in bed, sofa, walls, curtains, and any hidden secret you want to hide. It is understood that the minimum cutting of LED lights can reach 5mm. Such performance not only facilitates the overall design of home lighting, but also facilitates the consumer DIY.
However, the current LED lamp prices are generally high, many consumers are discouraged. In spite of this, dealers are very confident in the prospect of LED home lighting. According to Wen Xuanrong, general manager of DTL Lighting, after many years of development and technological improvements, LED industry has made great progress in heat dissipation, driving, light sources, chips, and other technologies, plus consumers’ income has continued to increase. The energy saving and environmental protection benefits brought about by the products are eager to achieve. This is the opportunity for LED lamps to be used in home lighting. 