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100G and 200G Optical Transceivers Product Detail

100G QSFP28 CWDM4

100G QSFP28 CWDM4 is a QSFP28 CWDM4 option using Duplex LC for 2km single-mode fiber links.

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
QSFP28 CWDM4
Optical interface
Duplex LC
Typical reach
2km
Transmission medium
Single-mode Fiber
QSFP28CWDM42km SMFDuplex LCQSFP28 CWDM4
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Compare 100G SR4, PSM4, CWDM4 and LR4 → Review reach, fiber, connector, breakout and link-budget boundaries before selecting the final model.
100G QSFP28 CWDM4 form-factor illustration

Specs & Features

Features and specifications

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

Product overview

100G QSFP28 CWDM4 is designed for 2km links using Duplex LC. Selection must confirm the host form factor, electrical interface, PMD, FEC, fiber mapping, power and thermal limits, software version and the remote endpoint; the model name alone does not establish interoperability.

  • QSFP28 CWDM4 form factor for the defined host-port direction.

  • Duplex LC interface for 2km links.

  • WDM single-mode optical transmission; 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 100G QSFP28 CWDM4, confirm the exact host, software, port mode, reach, fiber or cable, connector, FEC, temperature, quantity, compatibility coding and delivery version.

Selection FAQ

100G QSFP28 CWDM4 selection questions

Does 100G QSFP28 CWDM4 need an external MUX or DEMUX?

No. The wavelengths are multiplexed inside the module and presented on Duplex LC, so it drops into an ordinary duplex single-mode link. External filters are only needed when you combine separate single-channel modules onto one fiber.

How does 100G QSFP28 CWDM4 compare with an LR module at the same rate?

Both run over duplex single-mode fiber, so the difference is engineering margin rather than fiber type. 100G QSFP28 CWDM4 is listed for 2km; an LR variant targets 10km. Compare the measured link budget instead of choosing on the label.

What do I need to specify to request a quote for 100G QSFP28 CWDM4?

Give the host vendor, model and software version at both ends, the QSFP28 port or lane mode, the operating temperature range, the quantity per site and the target delivery date. For 100G QSFP28 CWDM4 also state the link distance, fiber type and connector already installed. Compatibility is confirmed per platform, so the host details matter as much as the optical specification.