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Proceedings Paper

Optical interconnection technology on electro/optical PCB (EOPCB)
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Paper Abstract

A chip-to-chip optical interconnection solution on PCB is presented in this paper. Both electrical and optical interconnections are used in common printed circuit board (PCB) to construct electro/optical PCB (EOPCB). An additional optical layer with waveguide structure is used in the PCB. So the EOPCB integrates the information medium "light" into the board. Optical transmitter is vertical cavity surface emitting laser (VCSEL) array. Optical receiver is PIN array. VCSEL array with its driver IC chip and PIN with its receiver IC chip are bonded with LSI chip by ball-grid array (BGA) technology. Then the LSI chips with VCSEL and PIN arrays are bonded on PCB by surface-mount technology (SMT). Multimode waveguides are used as optical layer in PCB. In order to couple light beam between optical transmitter/receiver with waveguide layer, a direct coupling method by the waveguide with 45° end face is presented. VCSEL chip is placed close to the 45° end face of the waveguide. The light beams from VCSEL array are emitted into the 45° end face directly and reflected by 90°, then coupled into the waveguide layer. No microlens arrays are needed for collimating light beam array in this configuration. A proof-of-principle experiment is made to verify the feasibility of this approach.

Paper Details

Date Published: 17 January 2005
PDF: 8 pages
Proc. SPIE 5644, Optoelectronic Devices and Integration, (17 January 2005); doi: 10.1117/12.571138
Show Author Affiliations
Fengguang Luo, Huazhong Univ. of Science and Technology (China)
Mingcui Cao, Huazhong Univ. of Science and Technology (China)
Xinjun Zhou, Huazhong Univ. of Science and Technology (China)
Jun Xu, Huazhong Univ. of Science and Technology (China)
Zhixiang Luo, Huazhong Univ. of Science and Technology (China)
Jin Yuan, Huazhong Univ. of Science and Technology (China)
Kai Fu, Huazhong Univ. of Science and Technology (China)


Published in SPIE Proceedings Vol. 5644:
Optoelectronic Devices and Integration
Hai Ming; Xuping Zhang; Maggie Yihong Chen, Editor(s)

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