GENG Jia-jun, HU Shun-di, HONG Huan-huan, et al. Control system of optical microcavity biosensor based on FPGA[J]. 2018, (2): 95-98. DOI: 10.13873/J.1000-9787(2018)02-0095-04.
intelligence and miniaturization of optical microcavity biosensing technology
a digital auxiliary control system based on field programmable gate array( FPGA) is proposed. The tunable laser is driven by the triangular wave signal to work in continuous sweep mode. Offset of laser center wavelength signal is obtained by periodically scanning the resonance wavelength of the optical microcavity.According to the offset of the wavelength
the sensitivity of optical microcavity is achieved. The hardware and software of the optical biosensor control system are designed. By experimental verification
the control system can realize data acquisition processing of optical microcavity biosensor and tuning of laser.