Low-loss monolithic integration of balanced twin-photodetectors with a 3 dB waveguide coupler for coherent lightwave receivers
作者： R.J. Deri , T. Sanada , N. Yasuoka , M. Makiuchi , A. Kuramata
DOI: 10.1109/68.58055
关键词: Local oscillator 、 Detector 、 Insertion loss 、 Circuit design 、 Optoelectronics 、 Optics 、 Physics 、 Coupling 、 Photodetector 、 Integrated circuit 、 Waveguide (optics)
摘要: Low-loss monolithic integration of a 3-dB waveguide coupler with twin photodetectors using large-mode size guides, mirror coupling, and low-capacitance lateral detectors is demonstrated. Waveguide-mirror introduces only approximately=1 dB optical insertion loss at 1.54 mu m wavelength, compared to top-illuminated detectors. Full balanced operation the circuit 33-dB local oscillator intensity noise suppression >
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