40G QSFP+ ZR4 80km

Q: Which 40G optical modules can be used for 4x10G transmission?

A: The 40GBASE-SR4, 40GBASE-CSR4, 40GBASE-PLR4, and 40GBASE-PLRL4 optical modules all employ parallel technology with 4 channels in each direction, making them suitable for 4x10G transmission.

Q: What kind of cable should be used with QSFP+ PLR4 and QSFP+ PLRL4 optical modules?

A: They both require the use of single-mode fiber jumpers equipped with MTP-12 APC connectors.

Q: What are the advantages and disadvantages of QSFP+ DAC high-speed cables?

A: QSFP+ DAC high-speed cables boast advantages such as low cost, low power consumption, high interoperability, and plug-and-play functionality; however, they are heavy, bulky,difficult to transport, have limited transmission distance, and can be challenging to manage. QSFP+ AOC high-speed cables, on the other hand, are lighter, offer greater bandwidth, and feature electromagnetic interference resistance, ensuring safer data transmission with higher performance.

Q: How to choose appropriate QSFP+ DAC high-speed cables and QSFP+ AOC high-speed cables?

A: When the transmission distance is less than 15 meters, QSFP+ DAC high-speed cables provide the most cost-effective solution. For distances between 15 meters and 100 meters, it’s advisable to use 40G QSFP+ AOC high-speed cables. Beyond 100 meters, 40G SR4 optical modules can be paired with OM3 or OM4 multimode fiber jumpers, or 40GBASE LR4 optical modules can be used with single-mode fiber jumpers to achieve even longer transmission distances.

Q: What are the typical solutions for a 40G network?

A: At the core of the 40G network layer, a common setup involves using multimode fibers like OM3 or OM4 connected at both ends by pairs of optical modules (most commonly 40G QSFP+ optical modules), primarily for long-distance transmissions; high-speed cables and active optical cables often serve as cost-saving alternatives to these optical modules and fibers in short-range interconnect applications.

Q: Power consumption of 40G QSFP+ optical modules

A: Power consumption varies by module, typically ranging around 1-3 watts, optimized for energy efficiency to meet the requirements of data centers.

Q: Compatibility of 40G QSFP+ optical modules

A: Compatibility is generally good, adhering to the MSA (Multi-Source Agreement) to ensure interoperability among different vendors, though it’s recommended to check the compatibility list for confirmation.

Q: Form factor of 40G QSFP+ optical modules

A: The form factor measures approximately 7×2.35×0.35×0.85 inches (length x width x height), featuring a compact design suitable for high-density line card slots.

Q: Bit error rate of 40G QSFP+ optical modules

A: The bit error rate is exceedingly low, typically <10^-12, ensuring accuracy in data transmission and network reliability.