The DWDM-QSFP-DD-120KM is a C-band 75G/100 GHz grid coherent opticalmodule thatcombines coherent DSP ASIC functionality with best in class ultra-narrow line-width tunable lasers, high speed modulators and high responsively coherent receivers to deliver high performance at 400G. The DWDM-QSFP-DD-120KM is a C-band 75G/100 GHz grid coherent opticalmodule thatcombines coherent DSP ASIC functionality with best in class ultra-narrow line-width tunable lasers, high speed modulators and high responsively coherent receivers to deliver high performance at 400G. A distributed-feedback laser (DFB) is a type of laser diode, quantum-cascade laser or optical-fiber laser where the active region of the device contains a periodically structured element or diffraction grating. The structure builds a one-dimensional interference grating (Bragg scattering), and the. A distributed-feedback laser (DFB laser) is a laser where the whole resonator consists of a periodic structure in the laser gain medium, which acts as a distributed Bragg reflector in the wavelength range of laser action. Typically, the periodic structure is made with a phase shift in its middle. TheDWDM-QSFP-DD-120KMcoherentmodule, compliant withtheOIF400ZRMSAandQSFP-DD MSAstandards, is designed for DCI applications. The digital diagnostics function is available via an I2C interface, as specified by the QSFP-DD MSA. 1GHz fine turning 400G DP-16QAM Modulation 0°C to 70°C 10~1dBm, it utilizes EDFA. host platform to support 400G transmission over optical links in DCI applications. Recommended Operating Conditions. The QSFP-DD 400G Digital Coherent Optical (DCO) 0dBm Open ZR+ transceiver is a 400 Gbit/s multirate pluggable module for 100/200/300/400GBASE Ethernet optical data communication. The transceiver operates with dual polarization quadrature amplitude modulation (DP-16QAM) and oFEC to achieve up to 120. Cisco offers a range of GBIC, SFP, XFP, SFP+, CXP, CFP, Cisco CPAK, and QSFP+ pluggable modules.
