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以信噪比为性能指标,以相邻光通道之间的串扰和探测器前置放大器的热噪声作为系统噪声的来源,研究了基于无衍射光的光互连系统在不同对准偏差条件下的性能。研究表明,探测器阵列的尺寸参数可作为系统对准偏差容忍度和信噪比的优化参数。扩大探测器半径,减小探测器间距可以使系统包容更大的对准偏差,但为了保证一个可以接受的信噪比,探测器间距不应过小。此外,采用无衍射光的光互连系统具有不受纵向对准偏差影响的优点。
Taking signal-noise ratio (SNR) as performance index, crosstalk between adjacent optical channels and thermal noise of detector preamplifier as the source of system noise, the optical interconnection system based on no-diffraction light was studied under different alignment errors Performance. Research shows that the size parameters of the detector array can be used as an optimization parameter of system tolerance tolerance and signal-to-noise ratio. Expanding the detector radius and reducing the detector spacing can make the system more tolerant of misalignments, but the detector spacing should not be too small to ensure an acceptable signal-to-noise ratio. In addition, optical interconnection systems using diffractive light do not suffer from the effects of longitudinal misalignment.