Low Power and Large Modulation Depth Optical Bistability in an Si Photonic Crystal L3 Cavity

Author

Yong Zhang ; Danping Li ; Cheng Zeng ; Xingzhi Qiu ; Ge Gao ; Yi Wang ; Qingzhong Huang ; Jinzhong Yu ; Jinsong Xia

Author_Institution

Wuhan Nat. Lab. for Optoelectron., Huazhong Univ. of Sci. & Technol., Wuhan, China

Volume

26

Issue

23

fYear

2014

fDate

Dec.1, 1 2014

Firstpage

2399

Lastpage

2402

Abstract

Optical bistability with low power and large modulation depth is observed in the silicon 2D photonic crystal 3 defect-long (L3) cavity coupling with a photonic crystal waveguide experimentally. The cavity-waveguide resonator system operates under the critical coupling condition. The triangular line shape of the cavity resonance and the hysteresis loop of the system is observed. The switching contrast is 7.7 dB and the modulation depth is 0.70 at the switching power of -12.1 dBm. A nonlinear coupled mode model is established to analyze the behavior of the cavity, and numerical simulation results are in good agreement with the experiment results.

Keywords

hysteresis; optical bistability; optical modulation; optical resonators; optical switches; optical waveguides; photonic crystals; silicon; Si; Si photonic crystal L3 cavity; cavity behavior; cavity resonance; cavity-waveguide resonator system; critical coupling condition; large modulation depth optical bistability; low power optical bistability; nonlinear coupled mode model; numerical simulation; photonic crystal waveguide; silicon 2D photonic crystal 3 defect-long cavity; switching contrast; switching power; system hysteresis loop; triangular line shape; Cavity resonators; Couplings; Modulation; Optical bistability; Optical switches; Optical waveguides; Silicon; Nonlinear optics; microcavity devices; photonic crystals; silicon;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2014.2358254

Filename

6905717