Codirectional grating-coupled filter for wavelength selective photodetection

作者： H. Sakata , S. Takeuchi , T. Hiroki

DOI: 10.1049/EL:19920474

关键词: Photodetection 、 Optoelectronics 、 Photodetector 、 Materials science 、 Wavelength 、 Frequency response 、 Optical filter 、 Grating 、 Diffraction grating 、 Cutoff frequency 、 Optics

摘要: Wavelength selective photodetection employing a vertical coupler filter is described based on GaAs/AlGaAs pin structure. The centre wavelength was varied depending the grating period by 12.8nm/μm for transverse electric mode. Frequency response indicated that cutoff frequency at least 1 GHz. proposed device has potential use in having 3dB bandwidth down to nm or less; only mm long.