Details

Autor(en) / Beteiligte

• Zou, Yi
• Chakravarty, Swapnajit
• Wray, Parker
• Chen, Ray T

Titel

Experimental demonstration of propagation characteristics of mid-infrared photonic crystal waveguides in silicon-on-sapphire

Ist Teil von

• Optics express, 2015-03, Vol.23 (5), p.6965-6975

Ort / Verlag

United States

Erscheinungsjahr

2015

Quelle

EZB Free E-Journals

Beschreibungen/Notizen

• We provide the first experimental demonstration of optical transmission characteristics of a W1 photonic crystal waveguide in silicon on sapphire at mid infrared wavelength of 3.43 μm. Devices are studied as a function of lattice constant to tune the photonic stop band across the single wavelength of the source laser. The shift in the transmission profile as a function of temperature and refractive index is experimentally demonstrated and compared with simulations. In addition to zero transmission in the stop gap, propagation losses less than 20 dB/cm are observed for group indices greater than 20 below the light line while more than 300 dB/cm propagation losses are observed above the light line, characteristic of the waveguiding behavior of photonic crystal line defect modes.