VCHUNG's QSFP-DD DCO is a high-performance digital coherent optical module designed for long-reach transmission in metro, access, and Cloud/DCI applications. It supports 100G/400Gbps data rates with flexible client-side interfaces (100/400GbE, OTU4) and line-side FEC options. Quad Small Form-factor Pluggable Double Density (QSFP-DD) solution that fits into high-density switch and router client ports for optical interconnect links Powered by Greylock and Delphi DSP ASICs, and silicon photonic integrated circuits (PICs) for an optimized co-packaged design with 3D. ZR+, Standard Tx output power (-10dBm), C-band tunable, Pull tab, 0°C to 70°C, LC receptacle The emerging OIF 400ZR and Open ZR+ MSA coherent transceivers in QSFP-DD and OSFP form factors generally have low transmit output power (-10 dBm), making them incompatible with ROADM networks. The synergy between DWDM (Dense Wavelength Division Multiplexing) and routing technology stands as the linchpin for the realization of the 400G QSFP-DD DWDM optical module. With one VOA inside the TX optical path the out output optical power has 4dB attenuation window. This module is managed to utilize the Two Wire Interface that is s ide are provided through the optical receptacles on the QSFP-DD.
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