Self-phase modulation in highly confined submicron Ta2O5 channel waveguides

被引：20

作者：

Lin, Yuan-Yao ^{[1
]}

Wu, Chung-Lun ^{[1
]}

Chi, Wen-Chun ^{[1
]}

Chiu, Yi-Jen ^{[1
]}

Hung, Yung-Jr ^{[1
]}

Chu, Ann-Kuo ^{[1
]}

Lee, Chao-Kuei ^{[1
,2
]}

机构：

[1] Natl Sun Yat Sen Univ, Dept Photon, 70 Lienhei Rd, Kaohsiung 80424, Taiwan

[2] Natl Sun Yat Sen Univ, Dept Phys, 70 Lienhei Rd, Kaohsiung 80424, Taiwan

来源：

OPTICS EXPRESS | 2016年 / 24卷 / 19期

关键词：

SUPERCONTINUUM GENERATION; SURFACE RECOMBINATION; CARRIER LIFETIME; SILICON; RESONATORS;

D O I：

10.1364/OE.24.021633

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Optical spectra broadening as a result self-phase modulation in a channel waveguide fabricated on a high quality tantalum pentoxide (Ta2O5) film by using RF sputtering is measured. The full-width at half maximum of the optical spectra for transverse electric (TE)/transverse magnetic (TM) polarizations of 42.5/31.7 nm is obtained using pulses of 10 nm at a wavelength of 800 nm with a peak-coupled power of 43.77 W. The nonlinear Kerr coefficients of 2.14 x 10(-14) cm(2)/W and 1.92 x 10(-14) cm(2)/W for TE and TM polarizations, respectively, are then extracted from the experiments using a theoretical model based on the method of moments. The obtained results on the nonlinearity further suggest that Ta2O5 is a promising material to develop nonlinear waveguide devices for integrated photonics. (C) 2016 Optical Society of America

引用

页码：21633 / 21641

页数：9

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