cwdm wavelengths

sense, the color of purity is also a sense of softness, because they easily reminiscent of camels, foxes, cats, dogs and many other animal fur, as well as woolen, velvet fabrics. High purity and low purity of color are hard to feel, such as their lightness and low, the hard sense is more obvious. Hue is almost irrelevant to the soft, hard feeling of color. (4) Color of the former, after the feeling by a variety of wavelengths of color in the retina

The direct psychological effect of color comes from the direct effect of the physical light stimulation of color on the physiological occurrence of human beings. Psychologists have done a lot of experiments on this. They found that in the red environment, people's pulse would be accelerated, blood pressure increased, emotional excitement impulse. In a blue environment, the pulse slows down and the mood is quieter. Some scientists have found that color can affect brain waves, brain waves on the r

the relatively small mode dispersion can be obtained, so the frequency band is wider and the transmission capacity is larger, and the latter is generally used at present. Several bands of light wave used in optical fiber cabling: 800nm~900nm shortwave bands, 1250nm~1350nm long-wave bands and 1500nm~1600nm Long-wave wavelengths. In these bands, the performance of optical fiber transmission is the best, especially in the central wavelength of the ban

, users through the Downlink optical interface Access system. The relay conversion part is mainly fiber relay amplifier, wavelength converter, photoelectric converter. The optical fiber relay amplifier is used to realize the transmission of the optical fiber signal relay, which can transmit the information in a long distance, and the wavelength converter completes the conversion between the different wavelengths transmitted by the quartz fiber and th

After reasonable management, two kinds of distortion factors (dispersion and self phase modulation) in optical fiber can cancel each other, so that the optical soliton can play its role. The color closing causes the pulse signal containing a group of wavelengths to diverge gradually with the increase of the transmission distance. Self-phase modulation (SPM) spreads the spectrum of light pulses horizontally. These two distortion factors have a certain

1, Photoelectric signal conversion method For a long time, people have been using copper wire for the transmission of sound and information. However, more and more recently, fiber-optic cabling has begun to be used. Because of the cost, it is not possible to switch all copper wire into optical fiber all of a sudden. But if you want to convert some of the cables into light signals, the most important thing is to convert the electrical signals into light signals and then convert the light signal i