Xref: utzoo comp.arch:17458 sci.electronics:13253 sci.physics:13852 Path: utzoo!utgpu!news-server.csri.toronto.edu!rutgers!usc!samsung!emory!mephisto!udel!berryh From: berryh@udel.edu (John Berryhill) Newsgroups: comp.arch,sci.electronics,sci.physics Subject: Re: Electro-optic bus Message-ID: <26307@nigel.udel.EDU> Date: 1 Aug 90 05:08:37 GMT References: <1965@trlluna.trl.oz> <7903@tekgvs.LABS.TEK.COM> Sender: usenet@ee.udel.EDU Reply-To: berryh@udel.edu (John Berryhill) Followup-To: sci.electronics Distribution: comp Organization: University of Delaware Lines: 24 In article <7903@tekgvs.LABS.TEK.COM> arnief@tekgvs.LABS.TEK.COM (Arnie Frisch) writes: >There are two significant advantages to electro-optic busses: > > 1. No crosstalk. A significant factor in wide bus high speed > applications. ...and hence immunity to EMI. > 2. Wide bandwidth as a function of the separation of the > transmitter and receiver. Reduction of dispersive effects, > such as skin effect. 3. Freedom from two-dimensional constraints. Optical waveguides can be fabricated on a 2D surface and intersect one another with little signal leakage. Alternatively, as has been alluded to, optical signals can be routed holographically through free space. Ideally, you'd have holograms that can be modulated in some fashion in real time so that your entire interconnect topology can be altered to fit the computational task at hand (the electro-optic effect in Lithium Niobate does have a small time persistence). -- John Berryhill 143 King William, Newark DE 19711