Research Of Optical Interconnection Waveguides For EOPCB

The growing demand for a wide variety of datacom and telecom services requires that we increase the throughput of core routers, WDM terminals, and ATM switches. Large scale network equipments usually consist of a large number of function units, there are many board-to-board and board-to-backplane connections within the system. Optics is gradually being introduced into intrasystem interconnections to replace electrcal cables for virtue of their high-bandwidth, high-density and lack of electromagnetic interference (EMI). As silicon LSIs become densely integrated and bit rates between LSIs increase,traditional printed circuit boards have problems similar to electrical cables; for example,limited line length, attenuation,waveform distortion,and crosstalk. A promising solution to these on-board electrical interconnection bottlenecks is chip-to-chip optical interconnection technology. The way is simple in principle. Optical paths for connecting chips are implemented as an interlayer of the PCB. An electrical signal from the processor would modulate a miniature laser beam,which would shine through the waveguide to a photodetector,which would in turn pass the signal on to the electronics. Though at the moment it is more expensive to communicate with light than with electric current,the day is coming when only optical technologies will be able to keep up with the demands of ever-more-powerful microprocessors.Waveguide used in optical interconnection PCB was researched in this paper. Most of the developments including progress,fabrication,and waveguide performance on ion-exchanged glass optical waveguides are summarized in this paper. The principle and the fabrication process of ion-exchanged waveguides are concerned theoretically and experimentally. The whole experimental system is set up, including several fabrication equipments of glass optical waveguides. K+-Na+ ion-exchanged planar glass optical waveguides are fabricated. The waveguide manufactured by means of K+-Na+ ion-exchange on the substrate of BK7 glass is analysed and its model of the index spread in K+-Na+ ion-exchanged glass is analyzed. A few factors that affect the index change are discussed indetail. Optical polymers are attractive for their economical and practical use for integrated opto-electronic devices and interconnections in the optical communication. The characterization and the development of optical waveguide polymer in the field are described. The present review summarize the progress of fluoro-containing polyimides. The momomers,synthesis methods and properities , especially optical properties of fluoro-containing polyimides are introduced. At the same time,the synthesis,properities and application of fluoro-containing polyimides are also discussed. The fabrication technology of polymer optical waveguide is investigated. Several fabrication technologies were discussed.The measurement was given in the paper. We designed EOPCB structure,gave a way for EOPCB coupling.experiment equipment and debug method was given.We measured coupling efficiency of coupling interface,and analysed result.