Company profile
Lumentum Technology UK
Operator of the Caswell indium phosphide wafer fabrication site in Northamptonshire, producing photonic chips and optical modulators for optical networking; the UK arm of a US-headquartered group.
Company overview
Lumentum is a global designer and manufacturer of photonic products for optical networking and laser applications. Headquartered in San Jose, California, the company has a significant UK presence, operating the Caswell indium phosphide (InP) wafer fabrication facility in Towcester, Northamptonshire. Lumentum's products are built on its expertise in materials science across various semiconductor platforms, particularly InP. The company states it is vertically integrated to support supply chain resilience. Its portfolio includes optical transceivers, electro-absorptive modulated lasers (EMLs), continuous wave (CW) lasers, and optical circuit switches. These components are supplied to end markets such as AI infrastructure, cloud data centres, telecommunications, and industrial sensing. The UK site is a key part of its manufacturing capabilities, producing photonic chips and optical components.
Semiconductor activity
Primary capability: Compound Semiconductor Fabrication. Supply-chain role: Component Design, Component Manufacturing, Wafer Fabrication.
Technologies and capabilities
- Indium Phosphide / InP
- Photonics
- VCSELs
- Co-Packaged Optics
- Indium Phosphide
Optical Transceivers; Lasers; Optical Switches; VCSELs; Photonic Integrated Circuits; Optical Modulators
Markets served
- Data Centres
- AI Infrastructure
- Telecommunications
- Industrial Sensing
- Submarine Networks
UK presence
Towcester. Part of the Midlands cluster.