Microgravity environment so the black optical going back to the optical fiber arm exotic fibers this underlie the whole are area of a tonic which again has picked up over the past decade we haven't even considered photonics then years ago and now we’re talking about me diode lasers and whatever photonics life so what are the things I'd let and byte way all the telecommunication industry and everything that you know enables communication between us has arm resorts right now the silica-based materials because those were readily available when we needed them up the exotic lassie’s actually is a Isa new class of glasses with higher-quality arm when you talk about the physical properties of the system's you talk about attenuation verses band with silly couples sometimes I'll for somewhere on Dell I think the best optical transmission is about bomb 20 decibel per kilometer for all 2 microns what we're .

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