100GBASE-ER4 Lite QSFP28 Compatible Transceiver: 100G-QSFP28-40

Our EDGEOPTIC 100G-QSFP28-40 is a multi-vendor compatible 100GBASE-ER4 Lite QSFP28 optical module designed for 100 Gigabit Ethernet, OTN, and Fiber Channel applications operating over single-mode fiber infrastructure. This quad small form-factor pluggable transceiver utilizes four wavelength division multiplexed optical lanes at 25 Gbps each, delivering aggregate throughput up to 112 Gbps for extended-reach metro and regional network deployments.

The 100G-QSFP28-40 module operates using LAN WDM technology with four discrete wavelength channels at 1295.56nm, 1300.05nm, 1304.58nm, and 1309.14nm, employing NRZ (Non-Return to Zero) modulation for signal encoding. Our 100GBASE-ER4 Lite QSFP28 transceiver utilizes EML (Electro-absorption Modulated Laser) array for transmission and APD (Avalanche Photodiode) array for receiving. This high-sensitivity optical architecture enables extended transmission distances by providing superior receiver performance in low signal conditions.

Transceiver ensures a 22 dB guaranteed optical link budget with host FEC enabled, or 18 dB without FEC, which determines the maximum transmission distance. Over standard single-mode fiber, the transceiver can reach distances up to 40 kilometers with FEC or approximately 30 kilometers without FEC. However, distance is just an indicative parameter calculated for comfort of identification – eventually we calculate distance taking into account minimal optical budget and average attenuation of optical cabling in industry. The ER4 Lite designation indicates optimized performance for extended reach while maintaining QSFP28 power envelope.

100G-QSFP28-40 compatible 100GBASE-ER4 Lite module is a hot-pluggable QSFP28 with dual LC/UPC connectors as the optical interface. The electrical interface conforms to SFF-8636 and SFF-8665 MSA (Multi-Source Agreement) specifications, ensuring compatibility with standard QSFP28 host systems supporting multiple vendor equipment platforms. Our 100GBASE-ER4 Lite QSFP28 transceiver can be encoded to be compatible and successfully operate in different 80+ brands of equipment.

The module incorporates DDM/DOM (Digital Diagnostic Monitoring) functionality providing real-time information including transmitted and received optical power levels, module temperature, bias current, and supply voltage. Additionally, the module supports Host FEC (Forward Error Correction) function which helps the receiving side detect and correct bit errors, improving overall link quality and extending achievable transmission distance. The module operates within a 0 to 70°C temperature range with maximum power consumption of 4.5W, with appropriate thermal considerations for sustained operation in controlled environments.

Standards compliance includes IEEE 802.3ba and IEEE 802.3bm for 100 Gigabit Ethernet 100GBASE-ER4 Lite specification and QSFP28 MSA. The transceiver supports multi-protocol operation including 100G Ethernet (103.125 Gbps), 128GFC Gen 6 Fiber Channel (112.2 Gbps), and OTU4 (112 Gbps) for optical transport networks. Our 100GBASE-ER4 Lite QSFP28 transceiver is CE/RoHS certified, Class 1 FDA and IEC60825-1 Laser Safety Compliant.

Typical applications include metro network interconnections, regional backbone links, carrier-class aggregation networks, and data center interconnects requiring extended reach beyond standard LR4 capabilities. The ER4 Lite design provides cost-effective solution for 40km deployments without requiring external amplification.

Because our focus is providing top quality service, we are performing serious quality checks before delivery of our products. As a result, we do optical parameter measurements, connector cleanliness tests and QSFP28 transceiver EEPROM memory data validation tests.