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PURPOSE To study the retina in normal subjects with a high-resolution imaging system using adaptive optics for wave front aberration correction. METHODS We used a low-cost 37-element micromachined membrane deformable mirror (MMDM) with a continuous membrane as the reflective surface. A Hartmann-Shack wave front sensor with cooled charge coupled device… (More)
We built and evaluated a hybrid electrical-packet/optical-circuit network for datacenters using a 10 µs optical circuit switch using wavelength-selective switches based on binary MEMs. This network has the potential to support large-scale, dynamic datacenter workloads.
When a quantum cryptographic system operates in the presence of background noise, security of the key can be recovered by a procedure called key distillation. A key-distillation scheme effective against so-called individual (bitwise-independent) eavesdropping attacks involves sacrifice of some of the data through privacy amplification. We derive the amount… (More)
Dedicated optical connections have significant advantages over shared internet connections. The OptIPuter project (www.optiputer.net) uses medical and earth sciences imaging as application drivers. Quartzite (UCSD) and Starlight (Chicago) create unique combinations of OEO routers and OOO and wavelength-selective optical switches. Over campus and state fiber… (More)
Recently, the notion of data as manifolds has come into being. The subject of image manifolds has been explored but not extensively and not from the point of view of diierential geometry. It i s a w ell known fact that image manifolds are curved. Using some basic techniques of diierential geometry this paper explores image manifold curvature and attempts… (More)
We perform 3D cross-correlation measurements of the optical field distribution resulting from an ultrashort pulse propagating in 6 meters of multimode fiber. Spatial amplitude and phase distributions of the optical field at the output of the fiber are measured using a time-gated spatial heterodyne interferometer as a function of time delay between the… (More)
Disclaimer The material in this document reflects the collective views, ideas, opinions and findings of the study participants and contributors only, and not those of any of the universities, corporations, or other institutions with which they are affiliated. Furthermore, the material in this document does not reflect the official views, ideas, opinions… (More)