The bandpass filter is not a DWDM wavelength division multiplexer

Depus Electric will answer for you: 1. Filter out current harmonics, which can efficiently filter out the harmonics of 2 25 times in the load current, so as to make the distribution network clean and efficient, and meet the requirements of the national standard for distribution network harmonics. The product truly achieves adaptive tracking compensation, which can automatically identify the overall change of load and the change of load harmonic content and quickly track the compensation, 80us response to load change, 20ms to achieve complete tracking compensation.

2. Improve the system imbalance, which can completely eliminate the system imbalance caused by harmonics, and in the case of equipment capacity, the negative sequence and zero sequence unbalance components of the system can be compensated according to the user's settings and the reactive power can be appropriately compensated. On the basis of ensuring the function of filtering out harmonics, the system imbalance is effectively improved. 3. Suppress the resonance of the power grid, and will not resonate with the power grid, and in its capacity

No, DWDM technology uses the bandwidth of single-mode fiber and the characteristics of low pulse loss to use multiple wavelengths as carriers, allowing each carrier channel to transmit simultaneously within the fiber.

Compared with the general single-channel system, Dense WDM (DWDM) not only greatly improves the communication capacity of the network system and makes full use of the bandwidth of optical fiber, but also has many advantages such as simple expansion and reliable performance.

FWDM WDM WDM: 3-port multi-mode filter type WDM (1310 1550nm) can realize 1310nm, 1550nm two communication window optical signal combination and wavelength division The selection of excellent thin film filter to ensure high-quality optical performance, stability and reliability can realize fiber bidirectional channel.

It can realize the combination and division of optical signals in 1310nm and 1550nm communication windows.

Excellent thin-film filters are selected to ensure high-quality optical performance, stability and reliability.

Fiber bidirectional channels can be realized.

1. First understand a junior high school physics knowledge point: light is reversible.

2. There is no essential difference between multiplexing and demultiplexing, only the transmission direction of light is different3. Because the CWDM wavelength interval reaches 20nm, and the frequency drift index requirements are very loose, which cannot meet the requirements of DWDM, the use of DWDM wave decomposition multiplexer to demultiplex CWDM signals will cause the optical signal to be filtered out at the center frequency.

4. In addition, CDWM wavelengths are commonly used as 1470, 1490, 1510, 1530....1660, which is completely out of the carrying range of DWDM optical devices.