By using eight linear array CCDs as the photo detector

a new type of multi-channel fiber-optic spectrometer was presented to measuring eight channel spectra simultaneously and swiftly. In the system

a FPGA was acted as the controlling unit to generate time sequence and the spectral data were processed by the DSP

it communicated with the PC by its inner USB module. This paper introduces the structure of the whole system and the method of the optical system design

also describes the process of spectral data collecting under the control of the DSP and FPGA. A specific FPGA programming technique is brought forward to settle the capacitance effect inside the IC chip to prevent signal interference between two adjacent channels. The results show that the system has a good long-term stability

a large signal dynamic range and a higher SNR. The spectrometer can be used to measure spectrum or related parameters in various situations.