Si photonic crystal waveguide based delay lines

被引：0

作者：

Lin, Che-Yun ^{[1
]}

Zhu, Liang ^{[1
]}

Subbaraman, Harish ^{[2
]}

Hosseini, Amir ^{[2
]}

Wang, Alan X. ^{[3
]}

Chen, Ray T. ^{[1
,2
]}

机构：

[1] Univ Texas Austin, 10100 Burnet Rd,Bldg160 MER, Austin, TX 78759 USA

[2] Omega Opt Inc, Austin, TX 78759 USA

[3] Oregon State Univ, Corvallis, OR 97331 USA

来源：

NANOPHOTONICS AND MICRO/NANO OPTICS | 2012年 / 8564卷

关键词：

photonic crystal waveguide; slow light; true time delay; TRUE-TIME-DELAY; MODULATOR; RECEPTION;

D O I：

10.1117/12.2009132

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

We report a four-channel on-chip true-time-delay (TTD) module based on a photonic crystal waveguide (PCW) array. By minimizing the coupling loss with a photonic crystal taper (PC taper), the delay lines with 1-3mm long PCWs can operate up to a group index ng similar to 23 without significant loss. The large group velocity dispersion enables continuous and wavelength-tunable time delays. Measurements show a highly linear phase-frequency relation, highest time delay up to 216.7 ps, and large tuning ranges of 58.28 ps, 115.74 ps, and 194.16 ps for 1-3mm delay lines, respectively. The chip-scale TTD module can provide +/- 44.38 degrees steering for an X-band phased array antenna (PAA), but occupies only 0.18 mm(2) area.

引用

页数：8

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