Efficient silicon nitride grating coupler with distributed Bragg reflectors | Zendy

Huijuan Zhang | Zendy; Chao Li | Zendy; Xiaoguang Tu | Zendy; Junfeng Song | Zendy; Haifeng Zhou | Zendy; Xianshu Luo | Zendy; Ying Huang | Zendy; Mingbin Yu | Zendy; G. Q. Lo | Zendy

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Efficient silicon nitride grating coupler with distributed Bragg reflectors

Author(s) -

Huijuan Zhang,

Chao Li,

Xiaoguang Tu,

Junfeng Song,

Haifeng Zhou,

Xianshu Luo,

Ying Huang,

Mingbin Yu,

G. Q. Lo

Publication year - 2014

Publication title -

optics express

Language(s) - Uncategorized

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.22.021800

Subject(s) - materials science , optics , grating , silicon nitride , photonic integrated circuit , fiber bragg grating , optoelectronics , fabrication , bandwidth (computing) , photonics , coupling (piping) , silicon , telecommunications , physics , wavelength , medicine , alternative medicine , pathology , computer science , metallurgy

In this paper we have designed, fabricated and characterized a high efficiency Silicon nitride grating coupler at 1490 nm. Distributed Bragg reflectors as bottom mirrors are employed to improve the coupling efficiency by reflecting the downward traveling light. The peak coupling efficiency obtained is about -2.5 dB and the 1-dB bandwidth is 53 nm. The fabrication process is CMOS-compatible and is ready to be integrated with photonic circuits.

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