Stratio develops Ge-on-Si based SWIR image sensors, said to be cheaper than their predecessors. The company has been established in 2013 and led by Lee Jae-hyung, who worked at Boston Consulting Group and Samsung Electronics. Stratio Photonics West 2015 presentation sheds some light on its technology and value proposition:
Semicon West startup introduction page states: "Stratio, Inc. was founded in 2013 by four Stanford Electrical Engineering PhDs. Stratio’s core technology is low-cost germanium (Ge) based short wavelength infrared (SWIR) image sensors suitable for incorporation with mobile devices. Stratio’s sensor utilizes a proprietary hybrid process that combines selective Ge epitaxial growth with established Si CMOS technology to overcome the limitations of conventional InGaAs-based SWIR sensors. Stratio's unique manufacturing process has a high thermal budget and results in a two chip package (sensor and ROIC) that allows for greater manufacturing flexibility than traditional monolithic sensor solutions. In addition, Stratio is developing a low-cost, portable hyperspectral imaging system for use with our sensor."
Stratio's Youtube video from May 2014 shows its SWIR camera attachment for iPhone:
