400G OpenZR+ High Power Coherent QSFP-DD DCO Transceiver: 400G-QDD-DCO-ZRHP

Our EDGEOPTIC 400G-QDD-DCO-ZRHP is a multi-vendor compatible 400G OpenZR+ High Power coherent QSFP-DD DCO (Digital Coherent Optics) transceiver module designed for demanding long-haul 400 Gigabit Ethernet applications requiring enhanced optical performance over single-mode fiber infrastructure. The 400G-QDD-DCO-ZRHP module employs advanced coherent transmission technology utilizing DP-16QAM (Dual Polarization 16-Quadrature Amplitude Modulation) to achieve an aggregate data rate of 425 Gbps over a single wavelength. This high-power tunable C-Band DWDM transceiver supports ITU-T grid channels 13 through 61 with 75 GHz or 100 GHz spacing, delivering enhanced link budget for challenging fiber routes and extended unamplified reach scenarios.

Our 400G OpenZR+ High Power coherent QSFP-DD transceiver utilizes an ITLA (Integrable Tunable Laser Assembly) transmitter with enhanced output power capability, providing launch power up to +4 dBm for extended reach applications without external amplification. The receiver section incorporates an ICR (Integrated Coherent Receiver) with advanced DSP processing for polarization and phase recovery. The module ensures a 15 dB guaranteed optical link budget, supporting transmission distances up to 450 kilometers over amplified single-mode fiber spans, or approximately 60 kilometers unamplified – significantly extending reach compared to standard-power variants. However, distance is an indicative parameter calculated for identification purposes – ultimately we calculate reach taking into account optical amplification, fiber characteristics, and OSNR requirements of the deployed network.

The 400G-QDD-DCO-ZRHP compatible coherent module is a hot-pluggable QSFP-DD form factor transceiver with duplex LC/UPC connectors as the optical interface. The electrical interface conforms to QSFP-DD MSA, CMIS V5.0, 400GAUI-8, 100GAUI-2, and OIF Coherent CMIS specifications, ensuring compatibility with standard QSFP-DD host systems across multiple vendor equipment platforms. Our 400G OpenZR+ High Power coherent QSFP-DD transceiver can be encoded for compatibility with latest platforms from leading vendors including Cisco, Juniper, Arista, Nokia, Huawei, and other major network equipment manufacturers. The module features integrated Forward Error Correction within the onboard DSP and incorporates CDR (Clock and Data Recovery) functionality.

The transceiver includes DDM/DOM (Digital Diagnostic Monitoring) capability providing real-time operational parameters including transmitted and received optical power, OSNR monitoring, chromatic dispersion compensation status, module temperature, and laser frequency. This comprehensive diagnostic data is accessible via the CMIS-compatible management interface, enabling detailed monitoring of coherent transceiver health and optical path performance. The module operates within a 0 to 70°C commercial temperature range with maximum power consumption of 20W, requiring appropriate thermal management for sustained operation in high-density deployments.

Standards compliance includes OpenZR+ MSA Implementation Agreement, QSFP-DD MSA, and OIF Coherent CMIS specifications. The transceiver achieves multi-vendor interoperability through adherence to industry-standard coherent specifications, though equipment with vendor-specific module authentication may require custom EEPROM programming for full compatibility. Our 400G OpenZR+ High Power coherent QSFP-DD transceiver is RoHS certified.

Typical applications include extended unamplified metro links, regional backbone connections with challenging loss budgets, carrier-grade DWDM networks requiring margin for aging and repair splices, and scenarios where optical amplification is impractical or cost-prohibitive. The High Power designation provides critical additional link budget for network designs requiring operational margin. Because our focus is providing top quality service, we perform comprehensive quality verification before delivery including coherent optical parameter measurements, output power verification, wavelength accuracy testing, connector cleanliness inspection, and QSFP-DD transceiver EEPROM memory validation tests.