Phlux annnounces beta samples of latest noiseless APD devices
Phlux Technology, a UK manufacturer of avalanche photodiode (APD) IR sensors, is beta sampling its Apex 200 µm receiver module, PX02200-TO.
These are designed for ultra-low-light detection as part of a family of Apex receivers that combine Phlux’s Noiseless InGaAs Aura APD detectors with low noise, optimised pre-amplifier circuits all integrated in a convenient industry standard TO-8, 12-pin header package.
Operating across the 900 to 1700 nm wavelength range and optimised for 1550 nm detection, the Apex receiver modules support high bandwidth, small signal acquisition for demanding applications. They are designed to maintain stable performance across wide environmental operating conditions, and feature an integrated temperature sense diode for temperature compensation of the high-voltage supply, supporting consistent responsivity in precision applications.
The module has an exceptionally low noise equivalent power (NEP) of 35 fW/√Hz whilst maintaining a bandwidth of 100 MHz. Other features include high responsivity of 600 kV/W at 1550 nm; and an output voltage swing of 2.4 V (unloaded, 150 ns pulse).
The Apex family is suited to Laser Range Finding, LiDAR, defence and security, distributed temperature sensing, gas sensing and analytical instrumentation, and general high-speed, low light detection applications requiring best-in-class sensitivity.
In addition to the Apex 200 µm product, Phlux is developing 80 µm and 30 µm APD variants of the Apex integrated receiver family.
Apex 80 µm alpha samples will be available later this year and offer an NEP of 47 fW/√Hz at a bandwidth of over 200 MHz. This represents a performance improvement greater than 5x current commercially available incumbent products. The Apex 30 µm integrated receiver promises even further reductions in NEP, offering the potential for linear photon counting applications and quantum sensing. Higher bandwidth versions are possible.
Phlux’s APDs are designed to meet MIL-STD-883, qualified to Telcordia GR-468 and are drop-in replacements for existing surface mount or TO-packaged components, enabling instant upgrades to existing systems.
The Aura series of APDs used within the Apex product line recently won SPIE’s prestigious PRISM Award in the sensors category announced during Photonics West 2026.
