Mid-infrared supercontinuum generation using a silicon racetrack resonator

作者：Chiangga S; Suwanarat S; Amiri I S; Yupapin P^*

来源：Applied Physics B: Lasers and Optics , 2017, 123(3): 69.

DOI：10.1007/s00340-017-6658-2

A micro-optic racetrack waveguide is designed and simulated for a mid-infrared supercontinuum (SC) generation, where the device structure consists of a single-couple racetrack ridge and double-couple racetrack ridge wave-guides, which can be engineered to have the anomalous dispersion silicon-on-insulator ridge waveguide. Using the commercial software, the numerical results are obtained and investigated. Using a 50 fs pulse input with a low peak power of 25 W, the obtained results have shown that the dispersion of the propagation pulse, D = + 28.89 nm(-1) km(-1) at the near-infrared wavelength can be obtained, in which the obtained broadband SC spectrum can be extended around 2100 and 1613 nm with a -30 dB covering the wavelength range from 1043 nm to 3152 and 1030 to 2643 nm, respec-tively, which can be compared with the ridge waveguide, from which the spectrum is extended to have the maximum of 4.77 and 3.66 octaves, respectively. It is also found that the physical process of the supercontinuum generation in both couple racetrack ridge waveguides is related to the soliton fission and Cherenkov radiation, self-phase modulation and accumulations are inside the racetrack waveguide resonator until the amplitude and spectrum width are stabled, which is discussed.

• 出版日期2017-3