Category: FAQs

Details picture to show you how single fiber CWDM Solution work

Discover how HTFuture’s optical amplifiers—pre-amplifiers, line amplifiers, and booster amplifiers—enhance signal quality and stability in DWDM systems.

What are your solution requirements? 1. What‘s the fiber type in your network connection? Can you tell if fiber is single fiber or dual fiber?   Fiber Type G.652 G.655 Other   Number of fiber Single fiber Dual fiber Other Other requirements (Optional)   2. How many spans are in the whole link? And what‘s… Continue reading DWDM OTN solution design requirement

WDM technology has many advantages and is developing rapidly. Main features include: 1)The bandwidth resources of the optical fiber can be used to increase the transmission capacity of an optical fiber several times to several tens of times compared with single-wavelength transmission; 2) multi-wavelength multiplexing in single-mode optical fiber transmission can save a lot of optical fiber… Continue reading DWDM/OTN Application Scenario

OLP-Optical Line Protection is a product that is used in the protection of network transmission line,the product can realize optical power monitoring and automatic switching. In optical communication network, OLP real-time monitoring optical power of working optical fiber and standby optical fiber. When the optical power value of working optical fiber is below the set… Continue reading What is OLP in DWDM ( Optical Line Protection) ?

The WDM Transponder(OEO) is widely used  in many networks, and the most classical function is wavelength conversion. When adding a CWDM/DWDM Mux to the WDM network, there is a requirement to convert the optical wavelengths like 850nm, 1310nm and 1550nm to corresponding CWDM/DWDM wavelengths. Then the WDM Transponder comes to assist,it can convert incoming optical… Continue reading What is the main function of the WDM Transponder (OEO)?

Is it possible to add EDFA and DCM  modules in CWDM  system?   No, EDFA  and DCM modules  can not be used in CWDM system. Since  the EDFA  and DCM modules‘ operating wavelength range is C- Band (1528~1564nm) which can not cover all the CWDM operating wavelength. Generally, the amplifier is used  for DWDM systems.

Why do I need DCM in DWDM link? Dispersion is a fiber based physical effect that spreads the optical pulse while it travels down the optical fiber. This effcet worsens the signal quality and thus limits the maximum distance you can achieve with your optical system. In order to counter this efef ct, DCM (Dispersion Compensation Modules)… Continue reading Why do I need DCM in DWDM link?

Can we add add EDFA to the single fiber DWDM solution？   Yes, EDFA modules can be added to the single fiber solution, but they should be used with Red/Blue C Band Filter.    Since the EDFA can only amplify signals from one direction, in single fiber application, the Red/Blue C Band Filter should be… Continue reading Can we add add EDFA to the single fiber DWDM solution？

0G coherent optical modules are mainly used for line-side optical transmission in 100G wavelength division systems. Compared with other line-side optical modules, they have good OSNR performance, sensitivity, dispersion tolerance, and DGD tolerance. DWDM technology using coherent modules is widely used in 100G metropolitan area networks to meet high-capacity and long-haul requirements.   HTF will… Continue reading Why use 100G Coherent Optical Module?