Demonstration of Direct Coupled Optical/Electrical Circuit Board
- 8 May 2009
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Advanced Packaging
- Vol. 32 (2) , 509-516
- https://doi.org/10.1109/tadvp.2009.2014246
Abstract
We report the development of a low cost, simple optical/electrical circuit board (OECB) using multimode polymer waveguide on FR4 printed circuit board (PCB). The design of this OECB uses only a 45deg-ended waveguide to couple and decouple the optical signal directly between the optical devices and the waveguide. The 45deg mirror is formed using excimer laser process on a multimode waveguide with temperature stability at reflow temperature. The optical waveguide is attached to a diced channel in the FR4 PCB using adhesive to form a completely planar circuit. This allows the laser diode and the photodiode to be assembled directly above the input and output of the waveguide using precision flip chip technology, which provides good alignment accuracy. This helps to increase the mechanical reliability of the circuit and minimize assembly requirements. Most importantly, all the electronic and optoelectronic devices used are commercially available components. In the paper, we report the details of the design, simulation result, and the testing results.Keywords
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