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400G Optical Transceivers Product Detail

400G QSFP-DD AOC

400G QSFP-DD AOC is a active optical cable for ai clusters and high-density data-center interconnects, with length and compatibility defined by the ordered version.

Product specification information

Use the published model direction and key parameters for selection and sample planning. Confirm compatibility coding, optional temperature grade, and production parameters in the formal specification or order document.

Product family
QSFP-DD AOC
Optical interface
QSFP-DD to QSFP-DD
Typical reach
Custom length
Transmission medium
Integrated active optical cable
QSFP-DD400G AOCPAM4QSFP-DD AOC
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400G QSFP-DD AOC form-factor illustration

Specs & Features

Features and specifications

For the latest specification and samples, contact sales@staricatech.com.

Product overview

400G QSFP-DD AOC integrates both host ends and the cable assembly for fixed short-reach deployment. Confirm the exact length, both host models, port mode, FEC, routing space, temperature, compatibility coding and delivery version before ordering.

  • QSFP-DD AOC form factor for the defined host-port direction.

  • QSFP-DD to QSFP-DD interface for Custom length links.

  • Active optical cable; confirm the exact fiber or cable assembly before ordering.

  • Validate host coding, FEC, diagnostics, power, thermal behavior and long-duration stability.

Selection and deployment notes

  • Before ordering 400G QSFP-DD AOC, confirm the exact host, software, port mode, reach, fiber or cable, connector, FEC, temperature, quantity, compatibility coding and delivery version.

Selection FAQ

400G QSFP-DD AOC selection questions

How is the length of 400G QSFP-DD AOC chosen?

400G QSFP-DD AOC is built to a fixed length, so measure the real cable path including slack, bend radius and cable-management detours rather than the straight-line distance between ports. An assembly that is slightly short cannot be extended, and one that is far too long congests the tray.

Is 400G QSFP-DD AOC easier to route than a DAC at the same speed?

Usually yes: 400G QSFP-DD AOC is lighter and bends tighter than a Twinax assembly at the same rate, which matters across dense QSFP-DD panels. The trade-off is that it draws power at both ends and cannot be repaired in the field.

What do I need to specify to request a quote for 400G QSFP-DD AOC?

Give the host vendor, model and software version at both ends, the QSFP-DD port or lane mode, the operating temperature range, the quantity per site and the target delivery date. For 400G QSFP-DD AOC also state the exact length per link and whether the assembly has to break out to lower-rate ports. Compatibility is confirmed per platform, so the host details matter as much as the optical specification.