TFF Type WDM
KBAN TFF WDM is based on Thin Film Filter (TFF) technology. Our Filter-Based WDM product family covers following wavelength windows commonly used in optical fibre systems: 1310/1490/1550nm (for FWDM Device), 1271~1611nm (for CWDM Device or Module), 1525~1565nm (C_band for 100G/200G DWDM Device or Module) and 1269.23~1318.35nm (for 800G LWDM Device or Module), 1271±3.5~1371±3.5nm (for MWDM Device or Module) and 1270/1310/1490/1534/1577/1610/1650nm (for Cex-wdm Modules, including GPON, XG-PON, NG-PON2 and OTDR ).
KBAN WDM products have good wavelength stability and temperature stability. They meet the requirements of ordinary commercial-grade environments and the industrial-grade environmental requirements of 5G fronthaul networks; and the wavelength, bandwidth and other parameters of TFF products are flexible. Corresponding products can be customized according to customer requirements, so that TFF-based WDM products can be widely used in various communication scenarios, such as G-PON/XG-PON/NG-PON2 scenarios for access networks, and CWDM/DWDM transmission for metropolitan area networks Scenario, from the BBU/DU of the 4G/5G fronthaul to the RRU/AAU.
FAQs of TFF Type WDM
TFF is composed of dozens to hundreds of dielectric films of different materials, refractive index and thickness. One layer is of high refractive index and the other is of low refractive index, so it is a passband for a certain wavelength range and a stopband for another wavelength range, forming the required filtering characteristics.
MZ, Mach Zehnder, Mach Zehnder modulator. The modulator divides the input light into two equal signals and enters the two optical branches of the modulator respectively. The materials used in the two optical branches are electro-optical materials, and their refractive index varies with the external applied electric signal. Because the change of the refractive index of the optical branch will lead to the change of the signal phase, when the output ends of the two branch signal modulators are combined together again, the synthesized optical signal will be an interference signal with varying intensity, which is equivalent to converting the change of electric signal into the variation of optical signal and realizing the modulation of light intensity.
MZ, Mach Zehnder, Mach Zehnder modulator. The modulator divides the input light into two equal signals and enters the two optical branches of the modulator respectively. The materials used in the two optical branches are electro-optical materials, and their refractive index varies with the external applied electric signal. Because the change of the refractive index of the optical branch will lead to the change of the signal phase, when the output ends of the two branch signal modulators are combined together again, the synthesized optical signal will be an interference signal with varying intensity, which is equivalent to converting the change of electric signal into the variation of optical signal and realizing the modulation of light intensity.
MZ, Mach Zehnder, Mach Zehnder modulator. The modulator divides the input light into two equal signals and enters the two optical branches of the modulator respectively. The materials used in the two optical branches are electro-optical materials, and their refractive index varies with the external applied electric signal. Because the change of the refractive index of the optical branch will lead to the change of the signal phase, when the output ends of the two branch signal modulators are combined together again, the synthesized optical signal will be an interference signal with varying intensity, which is equivalent to converting the change of electric signal into the variation of optical signal and realizing the modulation of light intensity.
MZ, Mach Zehnder, Mach Zehnder modulator. The modulator divides the input light into two equal signals and enters the two optical branches of the modulator respectively. The materials used in the two optical branches are electro-optical materials, and their refractive index varies with the external applied electric signal. Because the change of the refractive index of the optical branch will lead to the change of the signal phase, when the output ends of the two branch signal modulators are combined together again, the synthesized optical signal will be an interference signal with varying intensity, which is equivalent to converting the change of electric signal into the variation of optical signal and realizing the modulation of light intensity.