The FAST-Net (Free-space Accelerator for Switching Terabit Networks) concept uses an array of wide-field-of-view imaging lenses to realize a high-density shuffle interconnect pattern across an array of smart-pixel integrated circuits. To simplify the optics we evaluated the efficiency gained in replacing spherical surfaces with aspherical surfaces by exploiting the large disparity between narro...

The Long Trace Profilometer (LTP) is a non-contact optical profiling instrument, designed to measure the absolute surface figure to nanometer accuracy of long strip flat, spherical and aspherical X-ray optics of up to 1200mm in length of distance. A key feature of the LTP is the wide range of surface shapes that it can measure. The ease of alignment and great flexibility are a result of the uni...

Uniform line spacing plane gratings are introduced into a recording system to generate aspherical wavefronts for recording varied line spacing plane holographic gratings. Analytical expressions of groove parameters are derived to the fourth order. A ray-tracing validation algorithm is provided based on Fermat's principle and a local search method. The recording parameters are optimized to recor...

Abstract Subaperture stitching wavelength scanning interferometry with a high-accuracy multi-axis position stage is proposed for measuring complex surface shapes such as aspherical and freeform optics. Typical optical approaches suffer due to poor fringe visibility when it comes complex-shaped Our technique allows proper solution this challenging issue by keeping the probe perpendicular slope, ...