ORTE photonics Coarse wavelength division multiplexer (CWDM) is oriented to the access layer of the metropolitan area network. In principle, the optical multiplexer is used to multiplex the optical signals of different wavelengths into a single fiber for transmission. At the receiving end of the link, the mixed signal in the fiber is decomposed into signals of different wavelengths with the help of the optical demultiplexer. , connect to the corresponding receiving device. CWDM equipment can be used to increase the transmission bandwidth and transmission distance of the network, so that the network capacity can be rapidly increased exponentially without affecting the original business, and the security of the network can be greatly improved at the same time. The standard wavelength interval commonly used in the industry is 20nm, and each wavelength covers 1270~1610nm of the single-mode fiber system.
ORTE photonics CWDM method is to connect multiple channels of CWDM devices in series one by one through the method of fiber cascading. As the number of cascaded channels increases, the product package size will gradually increase, and the channel insertion loss will also increase, affecting the consistency. While CCWDM uses the diaphragms of different channels to reflect the light step by step, so that the reflected light follows the "Z" shape, which is equivalent to "folding" the optical path, which greatly increases the space utilization rate. At the same time, there is no cascade coupling between fibers, as long as the input and output collimators meet the corresponding matching conditions, the insertion loss value of each channel can be made small, and the channel consistency is excellent.
ORTE photonics CCWDM sample:
ORTE photonics CWDM vs CCWDM parameters: