Phil Leigh;538202 Wrote: > Not really. Light transitions travel just as well through plastic as > "glass" over a few meters. And - to make toslink work - it really > doesn't have to travel all that well. One of my best friends owns a > company that actually makes fibre... It has to handle WAY more > bandwidth than Toslink.. > The real "problem" with toslink/optical are the transition points from > cable to opto-isolator/driver. > There really (almost) isn't such a thing as a "crappy" plastic cable - > but there are badly finished ends that scatter...and poorly fitting > connectors. > Anyway, this is way OT now!
There IS a difference between plastic and glass as commonly implemented, plastic usually comes as a single large fiber whereas glass usually comes as a bundle of many thin glass fibers. This can make a difference, with the single fiber light entering at different angles can traverse significantly different path lengths as it bounces from one side to another of the large fiber. This can lead to time domain edge smearing. In the thin fiber this effect is much much reduced. As long as the fibers in the glass bundle are all the same length the edge smearing from glass can be less than plastic. There ARE multi fiber plastic cables out there but they are pretty rare. John S. -- JohnSwenson ------------------------------------------------------------------------ JohnSwenson's Profile: http://forums.slimdevices.com/member.php?userid=5974 View this thread: http://forums.slimdevices.com/showthread.php?t=77649 _______________________________________________ Touch mailing list [email protected] http://lists.slimdevices.com/mailman/listinfo/touch
