Flexible opto-electronic circuit board for in-device interconnection

Abstract

We propose a flexible opto-electronic circuit board (FOECB) for in-device interconnection, which is combined with a flexible printed circuit (FPC) with flexible optical waveguides having 45º mirrors for 90º beam turning using adhesive film. The fabricated prototype shows total optical loss of 3.7 dB, and the prototype, which mounted a 4-ch vertical-cavity surface-emitting laser (VCSEL) array and a 4-ch photodiode (PD) array, successfully demonstrated optical signal transmission at a data rate of 10 Gbps/ch. These results show that the proposed prototype has considerable potential to realize practical FOECB for in-device interconnection.

Determination of allowable defect size in multimode polymer waveguides fabricated by printed circuit board compatible processes

“…Currently, optical interconnects are attracting interest for mobile applications where both high-speed digital signals of image and/or video data and various RF signals are used in a very compact space [1][2][3]. The optical interconnection module based on a flexible optical PCB schematically shown in figure 1 is a promising physical form for mobile phone application [3].…”