Performance analysis of 10-/spl mu/m-thick VCSEL array in fully embedded board level guided-wave optoelectronic interconnects |
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| Authors: | Chulchae Choi Lei Lin Yujie Liu Chen RT |
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| Affiliation: | Dept. of Electr. & Comput. Eng., Univ. of Texas, Austin, TX, USA; |
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| Abstract: | We introduce a simple and effective heat sink structure for thin-film vertical cavity surface emitting lasers (VCSELs) in fully embedded board level guided-wave interconnects. A 50% quantum efficiency increase is experimentally confirmed for the 10-/spl mu/m thin-film VCSELs. The thermal resistance of a 1 /spl times/ 12 embedded thin-film VCSEL array in printed circuit board (PCB) is further analyzed. The experimental results show an excellent match with the simulated results. The 10-/spl mu/m-thick VCSEL had the lowest thermal resistance and the highest differential efficiency compared to 250-, 200-, 150-, and 100-/spl mu/m-thick VCSELs. A substrate removed VCSEL can be used in fully embedded board level optical interconnects without special cooling techniques. |
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