A QSFP-40G-LR Optical Transceiver Module


The QSFP-40G-LR optical transceiver module is a high-performance, compact device designed for data communication applications demanding high bandwidth and long-distance transmission capabilities. QSFP stands for Quad Small Form-factor Pluggable, indicating its small footprint and the capability to support four individual channels of data transmission.

Here is a detailed description of the QSFP-40G-LR module:

Form Factor: The QSFP-40G-LR module adheres to the QSFP form factor standard, ensuring compatibility and interchangeability with other QSFP-compliant devices. Despite its compact size, it packs powerful optics and electronics necessary for high-speed data transmission.

Data Rate: As indicated by its name, the QSFP-40G-LR module supports a data rate of up to 40 gigabits per second (Gbps). This high data rate makes it suitable for applications requiring rapid data transfer, such as high-performance computing, data centres, and telecommunications networks.

Transmission Distance: The “LR” designation in the module’s name signifies its long-reach capabilities. The QSFP-40G-LR module is optimised for long-distance transmission, typically extending up to 10 kilometres (approximately 6.2 miles) over single-mode fibre optic cables. This makes it ideal for interconnecting networking equipment across large facilities or metropolitan areas.

Optical Interface: The QSFP-40G-LR module features an optical interface compatible with single-mode fibre optic cables. It utilises advanced laser technology to transmit data reliably over long distances with minimal signal degradation.

Wavelength: This module operates within specific wavelength ranges optimised for long-distance transmission over fibre optic cables. The exact wavelength may vary depending on the specific implementation and industry standards but typically falls within the C-band (around 1550 nanometres).

Connectors: The QSFP-40G-LR module is equipped with standard LC duplex connectors for easy integration into existing optical networks. These connectors ensure a secure and reliable connection, minimising signal loss and maximising data integrity.

Compliance: The QSFP-40G-LR module complies with industry standards and specifications, ensuring interoperability with a wide range of networking equipment from various manufacturers. It meets stringent quality and reliability standards to deliver consistent performance in demanding environments.

Hot-Pluggable: Like other QSFP modules, the QSFP-40G-LR is hot-pluggable, meaning it can be inserted or removed from a compatible port without powering down the entire system. This feature facilitates easy installation, maintenance, and upgrades without disrupting network operations.

In summary, the QSFP-40G-LR optical transceiver module offers high-speed, long-distance connectivity in a compact and versatile form factor, making it an essential component in modern data communication and networking infrastructures.

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The technical specifications of the QSFP-40G-LR optical transceiver module typically include:

  • Data Rate: Supports a data rate of up to 40 gigabits per second (Gbps), providing high-speed connectivity for data-intensive applications.
  • Transmission Distance: Optimised for long-distance transmission, typically up to 10 kilometers (approximately 6.2 miles) over single-mode fiber optic cables. This range may vary based on environmental factors and the quality of the fiber optic infrastructure.
  • Wavelength: Operates within a specific wavelength range, typically around 1310 nanometers (nm) for the transmit side and around 1550 nm for the receive side. These wavelengths are optimised for compatibility with single-mode fiber optic cables.
  • Optical Interface: Equipped with LC duplex connectors for seamless integration into existing fiber optic networks. These connectors ensure a secure and reliable connection, minimising signal loss and maximising data integrity.
  • Optical Power Output: Provides a specified minimum and maximum optical power output to ensure reliable signal transmission over the specified distance range. The exact power levels may vary depending on the module’s design and implementation.
  • Receiver Sensitivity: Specifies the minimum optical power level required for the receiver to detect and accurately decode incoming signals. A lower receiver sensitivity indicates better performance in challenging optical environments.
  • Operating Temperature Range: Designed to operate within a specific temperature range, typically between -5°C to 70°C (23°F to 158°F). This ensures reliable performance across a wide range of environmental conditions.
  • Power Consumption: Specifies the power consumption of the module during normal operation. Lower power consumption is desirable for reducing energy costs and minimising heat generation within networking equipment.
  • Compliance: Complies with industry standards and specifications, including relevant IEEE (Institute of Electrical and Electronics Engineers) and MSA (Multi-Source Agreement) standards. Compliance ensures interoperability and compatibility with a wide range of networking equipment.
  • Hot-Pluggable: Designed to be hot-pluggable, allowing for easy insertion and removal from compatible ports without disrupting network operations. This feature facilitates convenient installation, maintenance, and upgrades.