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Phlux Technology
Antimony-based infrared sensors for LiDAR and communications.
About Phlux Technology
Phlux Technology designs and manufactures infrared sensors for optical sensing and communications systems. A spinout of the University of Sheffield, it builds avalanche photodiodes (APDs) on an antimony-based semiconductor alloy that adds very little noise as the signal is amplified, so its detectors pick up weaker light than conventional InGaAs devices.
Its Noiseless InGaAs product family includes the Aura series of APD chips and Apex receiver modules, which work at the eye-safe 1550 nm wavelength. The company says its sensors can extend the range of LiDAR and laser rangefinders by up to 50% and raise data rates in fibre and free-space optical links.
Customers are makers of LiDAR systems, laser rangefinders, optical fibre test equipment (OTDR), free-space and quantum (QKD) communication receivers, gas sensing and defence equipment. Phlux sells its sensors and modules to these equipment manufacturers and develops new devices with industrial and academic partners through collaborative R&D projects.
Source: Dealroom company dataAt a glance
- Status
- Operational
- Founded
- 2020
- Headquarters
- Sheffield, United Kingdom
- Employees
- 23
- Open positions
- None listed
- Dealroom signal
- 74.7/100
- Sector
- Semiconductors, Autonomous Mobility, Lidar, Spinout, Sensor Tech, Sensors, Semiconductor Designers and Manufacturers, Fiber Optic Sensors, LiDAR Tech, Photonics Tech, Hard Tech
- Technology
- Hardware, Deep Tech
- Business model
- Manufacturing
- Client focus
- b2b
Knowledge graph
More headlines
Funding history
Company financing events and reported valuations.
| Deal type | Date | Amount | Valuation | Investors | Source |
|---|---|---|---|---|---|
| GRANT✓Other financing | Apr 2025 | $297K | — | UK Research and Innovation | — |
| SERIES A✓Equity / VC | Mar 2025 | $12M | $48M | Foresight Group · Octopus Ventures · Business Growth Fund · Northern Gritstone | ↗ |
Growth signals
Latest recorded traffic for Phlux Technology is 7.6K monthly website visits, up 28.8% over the last three months. Phlux Technology's team grew 0% over the past year.
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Investments and acquisitions
Recent portfolio relationships for companies that also act as investors or acquirers.
Investors
From Dealroom's funding and investor records, grouped by the round each investor first entered.
Seed3 investors entered at this stage
Northern Gritstone
Octopus Ventures
UK Research and Innovation
Series A2 investors entered at this stage
Business Growth Fund
Foresight Group
Other known investors4 additional known investors
University of Sheffield
Innovate UK Business Connect
Royal Academy of Engineering Enterprise Hub
TEAM SY
Source: Dealroom Talent Intelligence.
Global footprint
team presence
Market sentiment
An AI-synthesised read of the highest-engagement posts about Phlux Technology on X, ranked by likes and reposts, corporate channels excluded.
Reading the room on X — pulling top posts and synthesizing themes…
Source: X recent search ranked by engagement (likes + retweets) · Synthesis by Claude · Cached for 1 hour
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