Duchesne David, Peccianti Marco, Lamont Michael R E, Ferrera Marcello, Razzari Luca, Légaré Francois, Morandotti Roberto, Chu Sai, Little Brent E, Moss David J
INRS-EMT, 1650 Boulevard Lionel Boulet, Québec, Canada.
Opt Express. 2010 Jan 18;18(2):923-30. doi: 10.1364/OE.18.000923.
We demonstrate supercontinuum (SC) generation at both 1550 nm and 1288 nm in a compact (< 5mm(2)) 45 cm spiral waveguide composed of CMOS-compatible doped high-index glass. While both wavelengths have weak dispersion and are near zero dispersion points, they present different symmetries. At 1550 nm, the normal dispersion regime takes place at longer wavelengths, whereas at 1290 nm it is at shorter wavelengths, and we observe features in the SC spectra that clearly reflect this. In particular, the spectrum at 1550 nm is more than 300 nm wide (limited by detection) and is well reproduced by simulations based on the measured dispersion. This work represents a practical on-chip broadband wavelength source with potential use in many important applications.
我们展示了在一个由CMOS兼容的掺杂高折射率玻璃制成的紧凑（<5mm²）45厘米螺旋波导中，在1550纳米和1288纳米处均产生了超连续谱（SC）。虽然这两个波长的色散都很弱且接近零色散点，但它们呈现出不同的对称性。在1550纳米处，正常色散区域出现在较长波长处，而在1290纳米处则出现在较短波长处，并且我们在超连续谱中观察到的特征清楚地反映了这一点。特别是，1550纳米处的光谱宽度超过300纳米（受检测限制），并且基于测量色散的模拟能够很好地重现该光谱。这项工作代表了一种实用的片上宽带波长源，在许多重要应用中具有潜在用途。
