光电探测器
材料科学
光学
光电子学
相移键控
炸薯条
频道(广播)
物理
电信
误码率
计算机科学
作者
Han Ye,Han Qin,Shuai Wang,Feng Xiao,Fan Xiao,Yimiao Chu,Liyan Geng
出处
期刊:Chinese Optics Letters
[Shanghai Institute of Optics and Fine Mechanics]
日期:2022-09-20
卷期号:21 (1): 011301-011301
被引量:1
标识
DOI:10.3788/col202321.011301
摘要
A quadrature phase-shift keying (QPSK) coherent photodetector chip consisting of a 4×4 multimode interference 90° optical hybrid and a four-channel evanescent photodetector array is designed and fabricated with its photo-response in the L-band characterized. The metal organic chemical vapor deposition regrowth method is adopted to realize active–passive monolithic integration. The chip exhibits a low dark current below 100 nA for each photodetector in the array, a low excess loss of 0.85 dB, a common mode ratio rejection better than 13.6 dB, and a phase deviation within ±10° over the 40 nm wavelength span.
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