Loss analysis for a two wire optical waveguide for chip-to-chip communication

Abstract

We propose an optical interconnect system for chip-to-chip communication using gold bond wires as a two wire waveguide. Here the loss of such a waveguide is determined for near-IR wavelengths, for different wire sizes and configurations, and show that we can achieve transmission loss coefficients less than 0.4 mm(-1) (1.7 dB/mm) making chip-to-chip optical communication possible using two-wire transmission lines made of standard gold bond wires. Such an optical waveguide scheme would greatly simplify inter-chip optical communication compared with existing waveguide concepts.

A New Analytical Method for Studying Higher Order Modes of a Two-Wire Transmission Line

“…But they all suffer from high loss or high dispersion [2]. It has been demonstrated both experimentally and numerically that two-wire waveguide can be used at THz frequency region successfully with many advantages such as no dispersion, low loss, easy fabrication, and good coupling with common THz sources [3][4][5][6][7][8]. Besides, there have been lots of work based on this type of waveguide which shows its high importance in microwave and THz frequencies [9][10][11][12][13][14].…”