25G Tunable DWDM SFP28 10km Industrial Transceiver: DWDM-25G-S28-10I-TUN

Our EDGEOPTIC DWDM-25G-S28-10I-TUN is a multi-vendor compatible industrial-grade tunable DWDM SFP28 dual-fiber optical module designed for wavelength-agile 25 Gigabit Ethernet applications in harsh environmental conditions. The DWDM-25G-S28-10I-TUN module features software-tunable transmission across 45 channels (17-61) in the DWDM C-Band 100 GHz ITU grid, with data rates from 8.5 to 28.1 Gbps supporting multiple protocol standards and applications. Our industrial tunable DWDM SFP28 transceiver utilizes Monolithic MZM Tunable TOSA (Transmitter Optical Sub-Assembly) technology for transmission and APD (Avalanche Photodiode) for receiving, engineered specifically for flexible wavelength provisioning in extreme temperature environments.

The transceiver ensures an 18 dB guaranteed optical link budget with host-based Forward Error Correction (FEC) support, which determines the maximum transmission distance capabilities. Over standard single-mode fiber (SMF), the module achieves reliable transmission up to 10 kilometers, making it ideal for wavelength-routed optical networks, industrial DWDM systems, and outdoor telecom deployments requiring wavelength flexibility. However, distance is just an indicative parameter calculated for convenience of identification – eventually we calculate distance taking into account minimal optical budget and average attenuation of optical cabling in industry standards. The tunable architecture enables dynamic wavelength allocation without physical transceiver changes, dramatically simplifying inventory management and network provisioning.

DWDM-25G-S28-10I-TUN compatible industrial tunable module is hot-pluggable SFP28 with duplex LC/UPC connectors as an optical interface. The electrical interface conforms to SFF-8431, SFF-8472, IEEE 802.3, SFF-8432, and SFF-8690 MSA (Multi-Source Agreement) specifications, ensuring compatibility with standard SFP28 host systems supporting multiple vendor equipment platforms. Our industrial tunable DWDM SFP28 transceiver can be encoded to be compatible and successfully operate in different 80+ brands of equipment. The module incorporates comprehensive DDM/DOM (Digital Diagnostic Monitoring) functionality providing real-time information including transmitted and received optical power levels, module temperature, bias current, supply voltage, and wavelength monitoring. This diagnostic data is available via MSA-compatible EEPROM interface, enabling continuous monitoring of transceiver operational parameters across all tunable channels and temperature variations.

The module operates within an extended industrial temperature range of -45°C to +85°C, with maximum power consumption of 2.5W, specifically designed for deployment in uncontrolled environments including outdoor cabinets, remote cell sites, industrial facilities, and harsh telecom infrastructure. The Monolithic MZM Tunable TOSA provides exceptional wavelength stability with output power from 0 to 4 dBm and enhanced extinction ratio of 6 dB minimum across all 45 channels. The APD photodiode receiver delivers superior sensitivity of -18 dBm across the entire ITU-T DWDM Grid 100 GHz C-Band spectrum, crucial for maintaining performance across extreme temperature variations. The wide receiver acceptance enables reception of both 50 GHz and 100 GHz spaced DWDM signals. The transceiver achieves multi-vendor interoperability through adherence to SFP28 MSA standards, though equipment with vendor-specific module validation may require custom EEPROM programming for compatibility.

Our industrial tunable DWDM SFP28 transceiver is CE/RoHS certified and compliant with Class 1 FDA and IEC60825-1 laser safety standards. Typical applications include reconfigurable optical add-drop multiplexers (ROADMs), industrial DWDM networks, smart grid communications, outdoor mobile backhaul systems, and wavelength-switched optical networks in harsh environments. The tunable capability eliminates the need to stock multiple fixed-wavelength transceivers, reducing operational complexity and spare inventory costs while enabling rapid service provisioning. The multi-rate capability accommodates both 10G Ethernet (10.31 Gbps) and 25G Ethernet (25.78 Gbps) applications across any selected DWDM channel. Because our focus is providing top quality service, we perform extensive environmental testing including thermal cycling across all tunable channels, wavelength accuracy verification, vibration resistance, humidity exposure tests, in addition to optical parameter measurements, connector cleanliness tests, and SFP28 transceiver EEPROM memory data validation tests.