High efficiency silicon nitride grating coupler

In this paper, we have designed, fabricated and characterized silicon nitride grating couplers with high efficiency at 1490 nm. The devices are fabricated using deep UV photolithography with resolution requirement of ∼500 nm. The grating coupler fabricated yields a peak coupling efficiency of −5.1 d...

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Veröffentlicht in:Applied physics. A, Materials science & processing Materials science & processing, 2014-04, Vol.115 (1), p.79-82
Hauptverfasser: Zhang, Huijuan, Li, Chao, Tu, Xiaoguang, Luo, Xianshu, Yu, Mingbin, Lo, Patrick Guo-Qiang
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Sprache:eng
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Zusammenfassung:In this paper, we have designed, fabricated and characterized silicon nitride grating couplers with high efficiency at 1490 nm. The devices are fabricated using deep UV photolithography with resolution requirement of ∼500 nm. The grating coupler fabricated yields a peak coupling efficiency of −5.1 dB. The 1-dB bandwidth of the grating coupler is 60 nm.
ISSN:0947-8396
1432-0630
DOI:10.1007/s00339-013-7954-2