A planar waveguide optical discrete Fourier transformer design for 160 Gb/s all-optical OFDM systems

作者：Li, Wei^*; Liang, Xiaojun; Ma, Weidong; Zhou, Tianhong; Huang, Benxiong; Liu, Deming

来源：Optical Fiber Technology, 2010, 16(1): 5-11.

DOI：10.1016/j.yofte.2009.09.005

• Optical orthogonal frequency division multiplexing
• Optical discrete Fourier transformer
• Planar lightwave circuit
• Directional coupler

A cost-effective all-optical discrete Fourier transformer (ODFT) is designed based on a silicon planar lightwave circuit (PLC), which can be applied to all-optical orthogonal frequency division multiplexing (OFDM) transmission systems and can be achieved by current techniques. It consists of 2 x 2 directional couplers, phase shifters and optical delay lines. Metal-film heaters are used as phase shifters, according to the thermooptic effect of SiO2. Based on the ODFT, a 160 Gb/s OFDM system is set up. Simulation results show excellent bit error rate (BER) and optical signal-to-noise ratio (OSNR) performances after 400 km transmission.

• 出版日期2010-1
• 单位华中科技大学