Conference Paper

Polymer waveguide-coupled 14-Gb/s × 12-channel parallel-optical modules mounted on optical PCB through Sn-Ag-Cu-solder reflow

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Abstract

We demonstrate a novel architecture of mounting parallel-optical modules (POMs) onto an optical printed circuit board (PCB) through Sn-Ag-Cu-solder reflow process where precisely positioned stud-pins on optical PCB and guide holes formed on POMs were mated to maintain good optical coupling. We confirmed that fabricated 14-Gb/s × 12-channel POMs achieved a good transmission performance on a test environment using evaluation boards. Then, the POM was mounted onto the optical PCB through Sn-Ag-Cu-solder reflow process actually. We report coupling loss characteristics and signal qualities at 14-Gb/s PRBS 231-1 for the optical link using POM-mounted optical PCBs.

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... To realize it, it is required to make a methodology of maintaining good optical coupling between parallel-optical modules and PWGs before and after solder-reflow process. We introduce a novel mounting architecture by unique alignment technology and developed a parallel optical module for a PWG-embedded PCB 5 . We also introduce the structure, design and characteristics of the 1060-nm VCSELs and the parallel-optical modules. ...
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Recorded low power dissipation in highly reliable 1060-nm VCSELs for " Green " optical interconnection Estimated coupling loss characteristics for TX-and RX-POM-mounted optical PCB. (a) BER characteristics (b) BER bathtub curves Fig
  • S Imai
S. Imai et al., " Recorded low power dissipation in highly reliable 1060-nm VCSELs for " Green " optical interconnection, " IEEE J. Sel. Topics Quantum Electron., vol. 17, no. 6, pp. 1614-1620, Nov/Dec 2011. Fig. 7. Estimated coupling loss characteristics for TX-and RX-POM-mounted optical PCB. (a) BER characteristics (b) BER bathtub curves Fig. 8. BER characteristics and BER bathtub curves for all 12 channels operated at 14 Gb/s PRBS 2