Coherent Launches First Dual-Laser QSFP28-DCO for Single-Fiber 100G Transmission
Event summary
- Coherent Corp. released the industry’s first dual-laser QSFP28-DCO module for bi-directional 100G coherent transmission over a single fiber.
- The solution enables up to 300km reach and a 10x capacity upgrade compared to legacy 10G bi-directional links.
- General availability began March 6, 2026, leveraging Coherent’s existing single-laser QSFP28-DCO technology platform.
- Target applications include Cable/MSO and wireless transport in fiber-constrained environments.
The big picture
Coherent’s innovation addresses a critical bottleneck in network expansion, particularly for operators facing high fiber deployment costs. The dual-laser QSFP28-DCO module aligns with broader industry trends toward higher-capacity, lower-footprint optical solutions, potentially reshaping how service providers approach infrastructure upgrades.
What we're watching
- Adoption Pace
- How quickly service providers will integrate the dual-laser QSFP28-DCO into existing infrastructure.
- Competitive Response
- Whether competitors will accelerate development of similar single-fiber coherent solutions.
- Market Expansion
- The extent to which this technology enables new use cases in fiber-limited regions.
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