Apodized Focusing Fully Etched Sub-wavelength Grating Couplers With Ultra-low Reflections
Publication Type:Conference Paper
Source:Conference on Lasers and Electro-Optics, Optical Society of America, p.SM1I.6 (2015)
Keywords:Gratings; Effective medium theory ; Subwavelength structures
We experimentally demonstrated apodized focusing fully etched sub-wavelength grating couplers for the transverse electric (TE) mode. An insertion loss of 4.2 dB, 1-dB bandwidth of 36 nm, and back reflection of -24 dB have been obtained.