40GBASE-PSM4 QSFP+ Transceiver: 40G-QSFP-11

Our EDGEOPTIC 40G-QSFP-11 is a multi-vendor compatible 40GBASE-PSM4 QSFP+ optical transceiver module engineered for long-reach 40 Gigabit Ethernet applications over single-mode fiber infrastructure. The 40G-QSFP-11 module operates with four parallel lanes at 1310nm wavelength for both transmission and reception, supporting data rates up to 44.8 Gbps across various network protocols and applications. Our 40GBASE-PSM4 QSFP+ transceiver employs DFB (Distributed Feedback) laser technology for transmission and PIN photodiode receivers, specifically optimized for extended-reach data center and metropolitan network connectivity.

The transceiver ensures a 7 dB guaranteed optical link budget, which determines the maximum transmission distance capabilities. Over standard single-mode fiber with parallel architecture, the module reliably achieves distances up to 10 kilometers, providing robust connectivity for campus backbones and metropolitan area deployments. However, distance is just an indicative parameter calculated for ease of identification – ultimately we calculate distance considering minimum optical budget and average attenuation of optical cabling in the industry.

40G-QSFP-11 compatible PSM4 module features hot-pluggable QSFP+ form factor with MTP/MPO-12 APC connector supporting 8 fibers (4 transmit and 4 receive channels). The angled physical contact (APC) connector design minimizes back-reflection, ensuring superior signal integrity over extended single-mode fiber links. The electrical interface conforms to INF-8438i and SFF-8436 MSA (Multi-Source Agreement) specifications, ensuring seamless compatibility with standard QSFP+ host systems across multiple vendor equipment platforms. Our 40GBASE-PSM4 QSFP+ transceiver can be encoded to be compatible and successfully operate in over 80 different brands of networking equipment.

The module incorporates advanced DDM/DOM (Digital Diagnostic Monitoring) functionality providing real-time operational data including per-lane transmitted and received optical power levels, module temperature, laser bias current, and supply voltage monitoring. The PSM4 architecture delivers cost-effective 40G connectivity for 10km distances, offering substantial savings compared to 40GBASE-LR4 solutions while maintaining comparable reach. This comprehensive diagnostic information is accessible via MSA-compatible EEPROM interface, enabling proactive performance monitoring and predictive maintenance strategies. Operating within a standard 0 to 70°C temperature range with single +3.3V power supply, the module maintains consistent performance in controlled telecommunications and data center environments.

Standards compliance encompasses IEEE 802.3ba for 40 Gigabit Ethernet, alongside OTU3/OTU3e2 support at 43.01/44.58 Gbps for Optical Transport Networks and STM-256 compatibility for SDH/SONET applications at 39.81 Gbps. The transceiver achieves extensive multi-vendor interoperability through strict adherence to QSFP+ MSA standards, though equipment with proprietary module verification may require custom EEPROM programming for complete compatibility. Our 40G QSFP-11 transceiver is CE/RoHS certified and compliant with Class 1 FDA and IEC60825-1 laser safety standards.

Primary deployment scenarios include data center interconnects, metropolitan area networks, enterprise campus backbones, and service provider aggregation networks. The 10-kilometer PSM4 technology provides an economical alternative to CWDM-based LR4 modules, utilizing simpler optical multiplexing while achieving equivalent distances. Because our focus is delivering superior quality service, we perform comprehensive quality checks before shipment including optical parameter measurements, APC connector cleanliness verification, and QSFP+ transceiver EEPROM memory validation testing.