Theoretical Analysis on Operation Speed of the Circular Defect in 2D Photonic Crystal (CirD) Laser

被引：4

作者：

Ye, Hanqiao ^{[1
]}

Nishimura, Tomoya ^{[1
]}

Xiong, Yifan ^{[1
]}

Yamaguchi, Takuya ^{[1
]}

Morifuji, Masato ^{[1
]}

Kajii, Hirotake ^{[1
]}

Kondow, Masahiko ^{[1
]}

机构：

[1] Osaka Univ, Grad Sch Engn, Dept Quantum Informat Elect, 2-1 Yamada Oka, Suita, Osaka 5650871, Japan

来源：

PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE | 2021年 / 218卷 / 03期

关键词：

circular defect; photonic crystals; wavelength division multiplexing; DESIGN; FABRICATION; CARRIER;

D O I：

10.1002/pssa.202000411

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Herein a circular defect in a 2D photonic crystal (CirD) laser for wavelength division multiplexing (WDM) optical communications is theoretically analyzed. By coupling CirD lasers to a waveguide, a huge communication capacity can be expected. For example, if high-speed, 50 Gbps laser operations are successfully achieved, WDM devices with 20 CirD lasers could achieve a communication capacity of 1 Tbps. Based on finite-difference time-domain (FDTD) simulation results, in this study, both current-output and high-frequency characteristics are investigated by solving 2D rate equations, revealing that an excessively high-quality factor in laser cavities reduces the relaxation-oscillation frequency. When the photon lifetime is 2 ps, which corresponds to a quality factor of approximate to 3000, a small threshold current of 5 mu A and a high relaxation-oscillation frequency of 40 GHz can be simultaneously obtained. These results suggest the potential of developing a WDM device using CirD lasers.

引用

页数：6

共 21 条

[1] High-Q photonic nanocavity in a two-dimensional photonic crystal [J].