Background
The huge and growing volume of data being accumulated by users and businesses today makes it more demanding to store and access this massive data, requiring greater data capacity and longer data transfers. Our customers are looking for a solution to install the DWDM system on their existing 40G network in preparation for capacity expansion.
Challenge
The current storage and delivery facilities of data centers are generally 10G and 40G switches. Increasing the network transmission distance is a difficult challenge, especially for 40G networks, because the maximum transmission range of 40G QSFP+ fiber is 40km. Our customer network has a dark fiber connection between two sites over 40km, and they don’t even know the link loss between these sites.
The solution
HTF uses 8CH DWDM systems and DWDM optical modules to transmit via bidirectional dual fiber.
This solution has the larger link budget, can realize data transmission, 60 km, 80G without adding extra fiber, 40G optical signal is divided into 4 all the way road 10G optical signal, through OEO transform them into corresponding DWDM wavelength, add dispersion compensator and optical fiber amplifier, link transmission distance can more than 60 km, even up to 80 km.
In this scheme, DWDM 10G 80km optical module is used for data transmission. Attenuator is used to adjust the received optical power of the optical module and keep it within the range of -13dbm ~ -20dbm to avoid burning out the optical module.
The power amplifier (BA) is set behind the MUX WDM transmitter end and before the fiber link to increase the power of transmitted light. The preamplifier (PA) is set before the MUX WDM receiver and behind the fiber link to enhance the weaker optical signal.
Conclusion
The cost-effective 40GbE solution is a key driver in providing higher bandwidth over traffic and supporting lower latency. The HTF 40G networking solution USES an economical and simple 10Gb DWDM system to extend the 40GbE service without adding new hardware and laying out fiber optic infrastructure, reducing input costs.
