- Coherent ($COHR) officially launched PhotonLink, its integrated optics platform for AI datacenters, at ECOC 2026 on September 21.
- PhotonLink is not simply a transceiver product. It spans the full optical signal chain from light generation through reception and supports CPO, NPO, and emerging chip-to-chip optical connectivity.
- The platform is organized around four functions, Generate, Shape, Guide, and Receive, integrating InP lasers, VCSEL arrays, silicon photonics, isolators, specialty fibers, micro-optics, and detectors.
- $COHR intends to provide not only individual components but also integrated external laser sources, precision fiber assemblies, and optical modules assembled and tested for customers' specific architectures.
- The company says it has more than 10 CPO engagements and more than 10 NPO engagements, with anchor customers and long-term agreements in both architectures, plus more than five engagements in emerging chip-to-chip connectivity.
- PhotonLink revenue is expected to begin ramping in Q4 2026, while $COHR is expanding its 6-inch InP and specialty-fiber manufacturing capacity to support the ramp.
- $COHR says its existing datacenter manufacturing base has already shipped more than 300 million InP lasers and more than one billion InP and GaAs photodetectors, giving PhotonLink an established manufacturing foundation.
> The important part of this announcement is not another optical component. It looks more like $COHR positioning itself as a full-stack AI optical connectivity supplier spanning lasers → SiPh → micro-optics → fiber → detectors → assembly/test.
> Supporting both CPO and NPO is particularly important. Rather than betting on one packaging architecture, $COHR is positioning itself to monetize the broader optical integration layer whichever architecture scales first.
> The numbers that stand out most are 10+ CPO engagements, 10+ NPO engagements, and a Q4 2026 revenue ramp. That suggests PhotonLink is moving beyond an ECOC technology showcase toward customer qualification and commercial deployment.
> This also fits the broader direction of the recent $NVDA-$COHR relationship. As optics moves closer to compute and switching silicon across AI scale-up and scale-out networks, vertical integration across optical components, precision assembly, and test could become increasingly valuable versus supplying lasers alone.