W&Wsens Inc.

W&Wsens Inc. (also referred to as W&Wsens Devices Inc.) is a photonics company based in Los Altos, California, in the United States. The company focuses on the design and development of thin-silicon photosensors that deliver high sensitivity in the red and near-infrared (NIR) wavelength ranges. Its core technological proposition is a lightwave-trapping approach using microholes, which is intended to enable high-speed and high-sensitivity performance in thin silicon photosensor arrays. The company's technology is built around microhole structures that are compatible with CMOS trench isolation etch processes. According to the company, this approach enhances absorption in thin silicon layers of 0.1 to 3 microns, covering wavelengths from 700 nm to 1000 nm, with an external quantum efficiency (EQE) of 85% at 850 nm for a 1-micron silicon layer. The company also describes work on microholes on thin germanium-on-silicon (Ge-on-Si) to extend the detectable wavelength range to 1700 nm. Reported performance characteristics include low jitter (below 15 ps) and high data bandwidth exceeding 56 Gb/s. W&Wsens positions its technology as a performance and cost-reduction path relative to alternative approaches such as black silicon, which relies on pulsed laser processing. The company emphasizes that its microhole technology is compatible with standard CMOS manufacturing processes, and that thin silicon layers of 3 microns or less can lower manufacturing costs. It also highlights monolithic integration of photosensor arrays with CMOS ASICs, as well as stacked technology combining photosensor arrays with CMOS ASICs for backside-illuminated CMOS image sensors (BICIS). The company targets a range of applications, including visible and NIR imaging, 3D imaging and time-of-flight imaging, augmented reality and virtual reality, facial recognition, LiDAR for advanced driver-assistance systems (ADAS), security, and medical applications. It also points to optical interconnect for data centers, citing aggregated data bandwidth of 1 Tb/s, and high-capacity optical links for 5G and 6G communications. W&Wsens Inc. is a privately held company. Its headquarters location in Los Altos, California, is documented in public knowledge bases. The company maintains an official website at wwsensdevices.com, where it presents its technology, applications, and competitive advantages. As of the available evidence, the company's founding year, founders, ownership structure, and executive leadership are not publicly documented in the supplied sources.

W&Wsens Inc. is a photonics company located in Los Altos, California, United States. Public knowledge bases identify it as a photonics company from Los Altos, California. The company operates an official website at wwsensdevices.com, where it presents its technology and product development activities. The company's history is centered on the development of thin-silicon photosensor technology. Its core innovation is a lightwave-trapping approach using microholes, designed to enable high-speed and high-sensitivity performance in thin silicon photosensor arrays, particularly in the red and near-infrared (NIR) wavelength ranges. This microhole technology is described as compatible with CMOS trench isolation etch processes, allowing it to enhance absorption in thin silicon layers ranging from 0.1 to 3 microns, covering wavelengths from 700 nm to 1000 nm. The company reports an external quantum efficiency (EQE) of 85% at 850 nm for a 1-micron silicon layer. W&Wsens has also extended its technology to germanium-on-silicon (Ge-on-Si) substrates, where microholes on thin Ge on Si are used to extend the detectable wavelength range to 1700 nm. The company reports low jitter (below 15 ps) and high data bandwidth exceeding 56 Gb/s for its devices. It positions its approach as a performance and cost-reduction alternative to black silicon, which relies on pulsed laser processing, emphasizing that its microhole technology is compatible with standard CMOS manufacturing processes and that thin silicon layers of 3 microns or less can reduce manufacturing costs. The company has worked on monolithic integration of photosensor arrays with CMOS ASICs, as well as stacked technology combining photosensor arrays with CMOS ASICs for backside-illuminated CMOS image sensors (BICIS). Its technology targets applications including visible and NIR imaging, 3D imaging and time-of-flight imaging, augmented reality and virtual reality, facial recognition, LiDAR for advanced driver-assistance systems (ADAS), security, and medical applications. It also targets optical interconnect for data centers, citing aggregated data bandwidth of 1 Tb/s, and high-capacity optical links for 5G and 6G communications. As of the available evidence, specific dated milestones such as founding year, funding events, product launches, or leadership changes are not documented in the supplied sources. The company is privately held, and its ownership and executive leadership are not publicly detailed in the evidence provided.

Developer of thin-silicon photosensors with high NIR sensitivity, emphasizing CMOS-compatible microhole lightwave trapping for high-speed, high-sensitivity, and low-cost photonics solutions.

• Thin Silicon Photosensors

  Photosensors using thin silicon layers (0.1–3 microns) with microhole lightwave trapping for high NIR sensitivity.

• Microstructure Hole Photodiodes

  Photodiodes with microhole structures to enhance red and NIR sensitivity, compatible with CMOS processes.

• Si PIN Photodiodes

  Silicon PIN photodiodes with reported EQE of 85% at 850 nm for 1-micron silicon.

• Ge-on-Si PIN Photodiodes

  Germanium-on-silicon PIN photodiodes extending wavelength range to 1700 nm.

• Stacked BICIS Photosensor Array

  Stacked technology combining photosensor array with CMOS ASICs for backside-illuminated CMOS image sensors.

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